Diagnosing Sliding Door Roller Problems

Troubleshooting Specific Roller Issues (Sticking, Squeaking, etc.)

Troubleshooting specific roller issues is where the rubber meets the road (or rather, the roller meets the track) in sliding door repair. A smoothly gliding door is a thing of beauty, but when it sticks, squeaks, or grinds, it can quickly become a major annoyance. Luckily, many roller problems are easily diagnosed and fixed with a little detective work.


Sticking is a common complaint. Often, the culprit is a build-up of dirt, grime, or even hair and fluff in the track. A good cleaning with a vacuum and a stiff brush can work wonders. If cleaning doesnt do the trick, the rollers themselves might be worn or damaged. Look for flat spots on the wheels, cracks in the housing, or bent axles. These usually require replacing the affected rollers.


Squeaking is another frequent issue, and its usually a sign of friction. Dry rollers are a prime suspect. Lubricating them with a silicone-based spray can often silence the squeak. However, if the squeaking persists, the problem could be a misaligned track or a roller thats not sitting properly in the housing. A little adjustment might be needed.


Sometimes, you might encounter a door that binds or jumps in the track. This can be caused by a bent track, a damaged roller, or even a loose screw in the roller assembly. Inspect the track for any bends or dents. Check the rollers for damage and ensure all screws are tight.


Finally, if the door feels heavy or difficult to move, it could be due to worn-out rollers. Over time, the bearings inside the rollers can wear down, creating more resistance. Replacing the rollers is usually the best solution in this case.


Troubleshooting roller issues is a matter of careful observation and a bit of logical deduction. By paying attention to the specific symptoms and systematically checking the different components, you can usually pinpoint the problem and get your sliding door gliding smoothly again.

Troubleshooting Specific Roller Issues (Sticking, Squeaking, etc.)

Tools and Materials Needed for Roller Replacement

Diagnosing a sliding door roller problem is one thing, but actually fixing it requires gathering the right tools and materials. Before you even start, knowing the specific type of roller your door uses is crucial. This will determine the replacement rollers you need to buy, and sometimes even the tools required for the job.


Generally, youll need a few basic tools. A screwdriver, usually a Phillips head, is almost always necessary for removing screws holding the door in its track or accessing the roller assembly. A flathead screwdriver might also be handy for prying things apart gently. A hammer can be useful, but should be used with caution, especially with plastic components. Pliers are also a good idea for gripping and maneuvering small parts or stubborn screws. For heavier doors, you might need a pry bar to help lift the door off its track, but again, proceed with caution to avoid damaging the door or frame.


Beyond the tools, the most important material is, of course, the replacement roller assembly. Make sure you buy the correct one! Taking the old roller with you to the hardware store is a smart move. Other materials you might need include lubricating grease for the new rollers (some come pre-lubricated), and possibly some new screws if the old ones are stripped or damaged. Finally, having some rags or paper towels on hand is always a good idea for cleaning up any grime or excess grease.


Having the right tools and materials readily available before you begin will make the roller replacement process much smoother and less frustrating. It's always better to be over-prepared than to have to stop mid-repair to run to the hardware store.

Step-by-Step Roller Replacement Guide

A sliding glass door can be a beautiful addition to any home, letting in natural light and providing access to the outdoors. But when the rollers start to wear out, that smooth glide can turn into a struggle. Before you call a professional, its worth checking if a simple roller replacement is all you need. This step-by-step guide will walk you through the process, helping you diagnose if bad rollers are the culprit and showing you how to replace them yourself.


First things first, lets diagnose the problem. Is your sliding door difficult to open or close? Does it stick, jump, or make a grinding noise? These are all classic signs of worn-out rollers. Carefully examine the bottom track. Look for debris, dirt, or obstructions. Sometimes a simple cleaning can solve the issue. If the track is clear, lift the door slightly. Most sliding doors have an adjustment screw near the bottom corner. Turning this screw clockwise can sometimes lift the door just enough to alleviate pressure on worn rollers, improving its movement. If neither cleaning nor adjusting makes a difference, the rollers likely need replacing.


Now for the replacement. Start by gathering your tools. Youll need a screwdriver, a new set of rollers (make sure they match your door's brand and model), and possibly a pry bar. Begin by sliding the door open as far as possible. Locate the adjustment screws and turn them counter-clockwise to lower the door and take the weight off the rollers. Next, depending on your door's design, you might need to remove a screw or clip holding the roller assembly in place. A pry bar can be helpful for gently popping the old rollers out. Once the old rollers are removed, simply insert the new rollers into the track, making sure they sit securely. Reattach any screws or clips you removed.


Finally, raise the door back into its proper position by turning the adjustment screws clockwise. Test the doors movement. It should slide smoothly and effortlessly. If theres still resistance, double-check that the new rollers are properly seated and that the track is clean.


Replacing sliding door rollers can seem daunting, but by following these steps, you can often fix the problem yourself, saving time and money. Remember to consult your doors manufacturer instructions for specific guidance, and if you're unsure about any step, it's always best to call a professional. A smoothly gliding sliding door is just a few steps away!

Step-by-Step Roller Replacement Guide

Post-Repair Inspection and Maintenance

So, youve wrestled with that sticky, stubborn sliding door, finally diagnosed the faulty rollers, and replaced them. Victory! But before you pat yourself on the back too hard and wander off, theres a crucial step often overlooked: post-repair inspection and maintenance. Think of it like post-op care after surgery – essential for a full recovery and to prevent future problems.


First, take a good look at everything. Did you inadvertently dislodge any weather stripping or damage the track while wrestling with the old rollers? Make sure everything is seated correctly and aligned. Gently slide the door back and forth, feeling for any remaining resistance or unusual noises. A slightly rough patch might just need a little lubrication, but a grinding or clicking could indicate a deeper issue you missed.


Lubrication is key to a smooth-running sliding door. Use a silicone-based lubricant specifically designed for sliding doors (avoid WD-40 as it can attract dirt and gum things up). Apply it to the track and any moving parts, including the newly installed rollers. This will not only help the door glide effortlessly but also protect the rollers from wear and tear, extending their lifespan.


Now, for the ongoing maintenance bit. Regularly cleaning the track is vital. Dirt, dust, and debris can accumulate, hindering the doors movement and even damaging the rollers. A quick vacuum and wipe down every few months will do wonders. Also, keep an eye (and ear) out for any changes in the doors operation. Catching a minor issue early can prevent it from escalating into a major headache down the road.


In short, post-repair inspection and maintenance isnt just a good idea; its an essential part of the sliding door repair process. A little preventative care now will save you time, money, and frustration in the future, ensuring your sliding door continues to glide smoothly for years to come.

 

A sliding glass door

In architecture and construction, a sliding glass door (also patio door or doorwall[1][2]) is a type of sliding door made predominantly from glass, that is situated in an external wall to provide egress and light. The doors can give access to a backyard or patio while providing a pleasant view,[3][4] and when not fully covered can be a source of passive daylighting. Like a window, when open it also provides fresh air and copious natural light. It is considered a single unit consisting of two or more panel sections, some or all being mobile to slide open. Another design, a wall-sized glass pocket door has one or more panels movable and sliding into wall pockets, completely disappearing for a 'wide open' indoor-outdoor room experience.

The sliding glass door was introduced as a significant element of pre-war International style architecture in Europe and North America. Their predecessor is the sliding Shōji and Fusuma panel door in traditional Japanese architecture. The post-war building boom in modernist and Mid-century modern styles, and on to suburban ranch-style tract houses, multi-unit housing, and hotel-motel chains has made them a standard element in residential and hospitality building construction in many regions and countries.[5]

Terminology

[edit]

"Handedness" of a sliding door is expressed as seen by an observer outside the building. When standing outside, a left-handed door opens from left to right (when closed, the handle is on the far left), and a right-handed door opens from right to left (when closed, the handle is on the far right). These relationships are sometimes described with the letters O and X, where O is the fixed panel and X is the sliding panel. The O/X notation allows the description of doors with more than two panels.

Sliding-door terminology
Denotaton Panels Panel motion Description
OX or right-handed 2 Right panel slides left
XO or left-handed 2 Left panel slides right
OX-O 3 Center panel slides left
O-XO 3 Center panel slides right
XOOX 4 Outer panels slide toward the center
OXXO 4 Center panels slide toward outer ones

Design options

[edit]

Traditional

[edit]

The traditional sliding doors design has two-panel sections, one fixed-stationary and one mobile to slide open. The actual sliding door is a movable rectangular framed sheet of window glass that is mounted parallel to a similar and often fixed similarly framed neighboring glass partition. The movable panel slides in a fixed track usually, and in its own plane parallel to the neighboring stationary panel.

A specialty form, for Washitsu or "Japanese-style rooms," creates sliding Shōji and Fusuma panel doors, with traditional materials for interior uses[6] and contemporary adaptations for exterior exposure and uses. They are used in themed and contemporary restaurants, residences, Japanese garden tea houses, and other situations. Specialty manufacturers are located in Japan and Western countries

Disappearing

[edit]

Another sliding doors design, glass pocket doors has all the glass panels sliding completely into open-wall pockets, totally disappearing for a wall-less 'wide open' indoor-outdoor room experience. This can include corner window walls, for even more blurring of the inside-outside open space distinction. Two-story versions are often electronically opened, using remote controls. For wide expanses, the opening point is centered, and three to six parallel tracks are used to carry the six to twelve sliding doors into the wall pockets on each side. Their recent popularity, shelter magazine coverage and technical and structural innovations have brought many options to market.

Trackless and disappearing

[edit]

A third sliding doors design has all the glass panels suspended from above, leaving a trackless and uninterrupted floor plane. They also disappear into side pockets. On final closure, they slightly drop down to create a weatherproof seal. A German manufacturer developed the original technology, and its use is predominantly in temperate climates.

Opening corner

[edit]

The sliding glass doors can be adapted to slide away from a corner connection leaving no corner post or framing in its wake. The corner stile is made up of two vertical profiles, a male and female section, which slot together and then slide away with the sliding doors. This meeting point does not have to be 90 degrees; it can also be an inverted corner allowing these frames to fit within any design seamlessly.

Energy efficiency, heat loss and gain

[edit]

Swinging glass doors are a better choice than the typical sliding glass doors, since they offer a much tighter seal,[7] but glass – even the best type of glass, chosen according to the climate zone – is always a poor insulator, making doors based on them a poor choice from a thermal comfort perspective. To reduce their negative thermal impact on the living space, glass doors should have insulated frames and be double or triple glazed, with low-emissivity coatings and gas-filling (typically argon). Metal-framed glass doors should also have thermal breaks. The doors should be properly sized and protected (using shades, blinds, curtains and other means).

Uses

[edit]

Sliding glass doors are popular in Southern Europe and throughout the United States, being used in: hotel rooms, condominiums, apartments, and residences; for access to upper balconies; for large views out - enhanced natural light in; and to increase incoming fresh air. In addition Sliding glass doors are commonly used in some regions as doors between the interior rooms of a home and a courtyard, deck, balcony, patio, and a garden, backyard, barbecue or swimming pool area. They are often called patio doors in this context. They are also used in interior design, often in offices and automobile sales areas, to give soundproof but visually accessible private office space. In residential interiors they are used, often with translucent 'frosted' glass replicating a traditional Shōji door, to allow daylight to penetrate further into the dwelling and expand the sense of interior spatial size.[6]

Upvc Patio doors

Special sliding glass doors called platform screen doors are used on railway platforms in order to protect waiting passengers from the elements as well as to prevent suicide attempts. They're sometimes found on bathroom shower doors.[8]

Fabrication

[edit]

Sliding glass door frames are often made from wood, aluminum, stainless steel, or steel, which also have the most strength. The most common material is PVC plastic. Replacement parts are most commonly needed for the moving-sliding parts of the door, such as the steel rollers that glide within the track and the locking mechanisms.

Glazing

[edit]

Glass in the doors can be either externally fitted or internally fitted, with internally fitted being the high-security design, depending on the specification the manufacturer implements in the design. To comply with energy conservation codes and for noise reduction, sliding glass doors are usually double glazed, and often treated for UV reflection. They usually have no mullions, unless attempting to appear part of a revival architectural style and then often using 'snap-on' faux grids.

Security

[edit]

Security design in the doors is aimed at preventing the doors both fixed and sliding from being lifted off their rails, anti-lift blocks can be fixed to the top of the frame to prevent the lifting of the door off its rails, in theory preventing unauthorised entry to the room when sliding door is in the closed position.

A rotating security bar, commonly known as a "Charley bar"[9] can also be fitted from inside the room to prevent the sliding action when the door is closed. A portable security bar can also be used for added security when traveling, preventing intruders from breaking in while occupants are away.

See also

[edit]

References

[edit]
  1. ^ "A NEW ENTRANCE; Window Replaced With Sliding Glass". The New York Times. May 31, 1964. Retrieved December 9, 2022.
  2. ^ "Who Calls Sliding Doors "Doorwalls"?". April 3, 2021.
  3. ^ "The Great Outdoors: The entrance is a sliding glass door through which you can see the woods beyond". The New York Times. January 29, 2003. Retrieved December 9, 2022.
  4. ^ John Johnson (February 17, 1991). "Demand Is Strong, but Police Crackdowns and a Saturated Market Spell Trouble for One of L.A.'s Biggest Businesses". The Los Angeles Times. Retrieved January 10, 2023. tries to position a sliding glass door on the patio so that it will improve the shot
  5. ^ Jeff Zbar (November 21, 2019). "2019 Structures Awards: Part 1 - South Florida". BizJournals.com (South Florida). Retrieved January 10, 2023. floor-to-ceiling sliding glass doors .. mimic .. Spanish Revival residence .. Miami Beach
  6. ^ a b Elaine Louie (May 27, 1999). "STORAGE; Sliding Doors for the Cluttered or Clean". The New York Times. Retrieved January 10, 2023.
  7. ^ "Doors"; Energy.gov, USA
  8. ^ Tim McKeough (February 19, 2014). "Which Is Better, Shower Curtain or Glass Door?". The New York Times. Retrieved January 11, 2023.
  9. ^ Fennelly, Lawrence; Perry, Marianna (August 18, 2017). 150 Things You Should Know about Security. Butterworth-Heinemann. p. 23. ISBN 978-0-12-809508-9.
Glassdoor, Inc.
Type of business Subsidiary
Type of site
Job search engine, review site
Available in Multilingual
Founded June 2007; 18 years ago (2007-06)
Headquarters 50 Beale Street, San Francisco, California, U.S.
Founder(s)
Key people  
Industry Internet
Services Online employment
Parent Recruit Holdings
URL glassdoor.com
Commercial Yes
Registration Required
Current status Active

Glassdoor is an American website where current and former employees anonymously review companies, operated by the company of the same name.[1]

In 2018, the company was acquired by the Japanese company Recruit Holdings (owner of Indeed) for US$1.2 billion, and it continues to operate as an independent subsidiary.[2][3]

Founding

[edit]

The company was co-founded in 2007 by Tim Besse, Robert Hohman (who serves as the company's CEO), and Expedia founder Rich Barton, who served as the company's chairman.[4] The idea came from a brainstorming session between Barton and Hohman when Barton relayed the story of accidentally leaving the results of an employee survey on the printer while working at Expedia.[5] The two hypothesized that if the results had been revealed publicly, it could have been a service to those looking to make career decisions.[6] The company's headquarters were established in Mill Valley, California.[7]

Website

[edit]

Glassdoor launched its company ratings site in June 2008,[8] as a site that "collects company reviews and real salaries from employees of large companies and displays them anonymously for all members to see", according to TechCrunch. The company then averaged the reported salaries, posting these averages alongside the reviews employees made of the management and culture of the companies they worked for – including some of the larger tech companies like Google and Yahoo.[9] The site also allows the posting of office photographs and other media.[10] Each year Glassdoor ranks overall company ratings to determine its annual Employees’ Choice Awards, also known as the Best Places to Work Awards.[11] Before July 2024, users only required an email address to sign up and leave a review.[12]

  • Glass Door operates in the following countries: Ireland, Belgium (French and Dutch versions), Australia, Canada (French), Canada (English), Portugal, Austria, Switzerland (in German and French), South Africa, Italy, France, Spain, Netherlands, Mexico, Brazil, Argentina, Germany, Sweden, India, Hong Kong, New Zealand, Singapore, England, Scotland and Wales and USA. [13]

The site later also began focusing on CEOs and workplaces and what it is like to work at jobs in general.[14] Employee reviews are averaged for each company.[15] Glassdoor ratings are based on user-generated reviews. The company has stated that it rejects about 20% of entries after screening.[16][17] Rules for posting reviews are different for smaller companies than they are for larger companies in order to preserve the anonymity of people in close departments.[18]

In 2010, Glassdoor released a fee-based program called "Enhanced Employer Profiles", which allows employers to include their own content on Glassdoor profiles, like executive biographies, classifieds, social media links, and referrals.[19] The company also allows users to post potential job interview questions that might be asked by certain companies, acquired by interviewed job candidates,[20] in addition to other information that can be used to prepare job applications.[21] The reputation a company has on Glassdoor has also been found correlative by Case Western Professor Casey Newmeyer.[22] Business Journal has recommended that CEOs review Glassdoor reviews to "telegraph organizational issues".[23]

In 2017, Glassdoor announced on its website that it would no longer post job advertisements that exclude people with criminal records. The business magazine Entrepreneur praised the move.[24]

In May 2020, Glassdoor announced it was laying off 300 people, accounting for 30% of the company's workforce and half of the Chicago office.[25] Another layoff was announced of approximately 140 people, or 15% of the company's workforce in March 2023.[26] Following the rise of the COVID-19 pandemic, the employees worked fully remote starting in March 3, 2020. The final remaining offices at Chicago and San Francisco are closing in 2024.[27]

Following the acquisition of the work discussion app Fishbowl, new and old users are now required to input their full name, workplace, and job title, though those details could be hidden. It is impossible to delete names from accounts, nor can they be changed without contacting support.[12]

Reports

[edit]

Glassdoor produces reports based upon the data collected from its users, on topics including work–life balance,[28] CEO pay-ratios,[29] lists of the best office places and cultures,[30] and the accuracy of corporate job searching maxims.[31] Glassdoor also puts the conclusions of its research of other companies towards its company policies.[10] In 2015, Tom Lakin produced the first study of Glassdoor in the United Kingdom, concluding that Glassdoor is regarded by users as a more trustworthy source of information than career guides or official company documents.[32][33]

Acquisitions and leadership

[edit]

In May 2018, Recruit Holdings announced its intention to acquire Glassdoor for $1.2 billion in cash, with the acquisition completed in June 2018.[34]

In September 2016, Glassdoor acquired Brazil's Love Mondays, expanding to Latin America.[35]

In 2014, the company hired Adam Spiegel as its CFO, with the intention of preparing for an eventual IPO.[4] By 2015, the site had 30 million users from 190 countries and corporate clients including one-third of all Fortune 500 companies.[10] That year, Glassdoor also began creating localized websites and mobile apps for different national jurisdictions, such as Germany.[36]

In February 2019, Glassdoor announced that COO Christian Sutherland-Wong would be promoted to President & COO.[37]

In 2023, Glassdoor acquired work-related social app Fishbowl.[12]

Investments

[edit]

The company received its first financing in 2008, receiving $3 million in funding, before launching its website.[7] In 2012 Glassdoor received $20 million of venture capital, taking its total outside funding to $42.2 million.[38] The following year, the company raised an additional $50 million.[39] In 2015, the company raised an additional $70 million, in an investment round led by Google Capital, giving the company a valuation of just short of $1 billion. The total of investment at this point was $160 million.[4] In 2016 Glassdoor raised an additional $40 million from investors.[40]

Anonymity

[edit]

In November 2017, the U.S. Court of Appeals required disclosing Glassdoor's anonymous users' identities to prosecutors investigating possible criminal misconduct by their employers. Investigators sought to speak with reviewers who might have seen crimes committed. The court's decision did not require sharing reviewers' identities with employers.[41]

In June 2022, Glassdoor lost a defamation lawsuit, forcing it to unmask the identity of users of the Glassdoor website who anonymously left negative reviews about their former employer. The ruling was regarding Zuru, a New Zealand company.[42]

Following a policy change in 2024 which required all users to verify their identity, real names and other personal information were automatically added to user profiles. Per Glassdoor's terms of service, the data is sourced from third parties and other sister services.[12] While users could still leave anonymous reviews, news site Ars Technica claimed this made the service vulnerable to data leaks in cases of data breaches and subpoenas.[43]

References

[edit]
  1. ^ Associated Press, March 29, 2013, cbc.ca, Employees rate their employers, CEOs on Glassdoor
  2. ^ Green, Alisha (May 9, 2018) [May 8, 2018 U]. "Glassdoor acquired by Japan-based Recruit Holdings for $1.2 billion to create job-site giant". www.bizjournals.com.
  3. ^ Musil, Steven (May 8, 2018). "Glassdoor to be acquired for $1.2B by Japanese HR company". CNET. Retrieved May 8, 2018.
  4. ^ a b c Deborah Gage (6 January 2015). "Google Capital Leads $70 Million Round for Job Review Site Glassdoor". WSJ.
  5. ^ Wingfield, Nick (2014-04-14). "The Art of 'Something From Nothing'". The New York Times. ISSN 0362-4331. Retrieved 2023-10-03.
  6. ^ "The Art of 'Something From Nothing'". The New York Times. April 14, 2014.
  7. ^ a b Duncan Riley (March 27, 2008). "Stealth Startup Glassdoor.com Takes $3 Million Series B". TechCrunch. AOL.
  8. ^ Erik Schonfeld, TechCrunch, June 10, 2008, At Glassdoor, Find Out How Much People Really Make At Google, Microsoft, Yahoo, And Everywhere Else.
  9. ^ "At Glassdoor, Find Out How Much People Really Make At Google, Microsoft, Yahoo, And Everywhere Else". TechCrunch. AOL. June 10, 2008.
  10. ^ a b c "What Glassdoor Has Learned From Seven Years Of Studying Other Companies". Fast Company. July 17, 2015.
  11. ^ Rob Grant, Daily Telegraph, April 8, 2013, Facebook voted world's best employer
  12. ^ a b c d Hoover, Amanda. "Glassdoor Wants to Know Your Real Name". Wired. ISSN 1059-1028. Retrieved 2024-03-20.
  13. ^ (https://www.glassdoor.ie)
  14. ^ More, Josh (2013). Job Reconnaissance. Elsevier. ISBN 9780124166608.
  15. ^ Bassi, Laurie; Frauenheim, Ed; Costello, Lawrence (2011). Good Company. Berrett-Koehler Publishers. ISBN 9781609940638.
  16. ^ Calgary Herald, April 10, 2013, Website lets workers rate their bosses anonymously
  17. ^ Vanessa Wong, BusinessWeek, March 18, 2013, Why Employees Like Zuckerberg (and Other Popular CEOs)
  18. ^ Sarah K. White (June 4, 2015). "How Glassdoor's reviews help you find your dream job". CIO. Archived from the original on February 2, 2017. Retrieved February 10, 2016.
  19. ^ Nick Wingfield, Wall Street Journal, June 23, 2010, Employers Sound Off on Company Review Site
  20. ^ Julie Balise (October 14, 2015). "16 unusual interview questions you may face at Facebook". SFGate.
  21. ^ Zoref, Lior (2015). Mindsharing. Penguin. ISBN 9781101633649.
  22. ^ "CEO awful? Great culture? Pittsburgh-area firms among those graded on Glassdoor". Pittsburgh Post-Gazette.
  23. ^ Bob Corlett (June 3, 2015). "Are you suffering from 'Glassdoor angst'?". The Business Journals.
  24. ^ Huhman, Heather R. (November 13, 2017). "Glassdoor Has Changed Its Policy on Ex-Cons. Why You Should, Too". Entrepreneur. Retrieved November 15, 2017.
  25. ^ "Glassdoor lays off 30% of its staff, sees domino effect on its data". media.thinknum.com. Retrieved 2020-10-04.
  26. ^ "Glassdoor Lays off 140 employees - LayoffsTracker". 23 March 2023.
  27. ^ Thier, Jane (February 29, 2024). "Glassdoor is closing its final remaining offices in Chicago and San Francisco as it goes fully remote". Fortune. Retrieved 2024-03-20.
  28. ^ "Glassdoor: Of the top 25 U.S. jobs for work-life balance in 2015, 10 are in the tech industry – VentureBeat – Business – by Emil Protalinski". VentureBeat. 20 October 2015.
  29. ^ Maxwell Murphy (25 August 2015). "Glassdoor Offers Sneak Peek Into Coming CEO Pay-Ratio Disclosures". WSJ.
  30. ^ Julie Balise (October 7, 2015). "These are the 10 coolest offices, Glassdoor says". SFGate.
  31. ^ "New Glassdoor Survey Suggests "It's Who You Know" Is Only Slightly True For Job Seekers". Fast Company. August 12, 2015.
  32. ^ Lakin, Tom (7 September 2015). "Why you shouldn't ignore Glassdoor". HR Magazine.
  33. ^ Frith, Becky (3 August 2015). "Glassdoor trusted more than employers". HR Magazine.
  34. ^ "Recruit Holdings Announces Completion Of Glassdoor Acquisition". www.prnewswire.com (Press release).
  35. ^ Ingrid Lunden (8 September 2016). "Glassdoor acquires Brazil's Love Mondays to expand into Latin America". TechCrunch.
  36. ^ "Glassdoor Launches in Germany". Marketwired. January 15, 2015. Archived from the original on August 2, 2020. Retrieved November 6, 2017.
  37. ^ "Glassdoor Chief Operating Officer Christian Sutherland-Wong Promoted To President". Glassdoor About Us. 2019-02-12. Archived from the original on 2021-09-21. Retrieved 2019-07-09.
  38. ^ Sarah Perez, TechCrunch, October 31, 2012, Glassdoor Raises $20M Series D To Expand Internationally
  39. ^ "Career community Glassdoor raises $50M to ramp up international expansion – VentureBeat – Deals – by Devindra Hardawar". VentureBeat. 5 December 2013.
  40. ^ julieverhage, Julie Verhage (June 3, 2016). "Glassdoor Raises New Funding at a Higher Valuation While Public Markets Struggle". Bloomberg.com. Retrieved November 8, 2016.
  41. ^ "Court requires Glassdoor reveal identities of anonymous users – The American Genius". theamericangenius.com. 14 November 2017. Retrieved November 15, 2017.
  42. ^ "Glassdoor ordered to unmask former toy company employees who posted scathing criticism, showing the scary stakes of 'anonymous' reviews". Retrieved December 4, 2022.
  43. ^ Belanger, Ashley (2024-03-19). "Users ditch Glassdoor, stunned by site adding real names without consent". Ars Technica. Retrieved 2024-03-20.
[edit]
Roman sliding door tracks at Pompeii, Italy (1st century AD)

A sliding door is a type of door which opens horizontally by sliding, usually parallel to (and sometimes within) a wall. Sliding doors can be mounted either on top of a track below or be suspended from a track above. Some types slide into a space in the parallel wall in the direction of travel, rather than the door sliding along the outside of the parallel wall.[1] There are several types of sliding doors, such as pocket doors, sliding glass doors, center-opening doors, and bypass doors. Sliding doors are commonly used as shower doors, glass doors, screen doors, and wardrobe doors, and in vans.

History

[edit]

Sliding doors were used as early as the 1st century CE in Roman houses (as evidenced by archaeological finds in Pompeii, Italy). However, there is no evidence to confirm that the Romans were the first humans to have invented or used sliding doors.[2][3]

Sliding door gear

[edit]

The mechanism used to operate a sliding door is called sliding door gear. There are two standard types: top-hung or bottom rolling systems. Both types do not have a perfect seal. To reduce air- and smoke-tightness and improve sound insulation, brush seals are commonly used.[1]

Top-hung sliding doors

[edit]
Some sliding doors run on a wall-mounted rail, like this one
Sliding doors in a modern wardrobe

The 'top-hung' system is most often used. The door is hung by two trolley hangers at the top of the door running in a concealed track; all the weight is taken by the hangers, making the door easier to move.[4]

At each end is a track stopper to absorb any impact made if the door is slammed and to hold the door in the open or closed position. All top-hung sliding door gear systems have a maximum weight limit per pair of trolley hangers.

As the door is hung at the top from two points, it also needs a bottom track/stay roller[5][clarification needed] to prevent it from swinging sideways. The most common type is called 'clear threshold guiding', a floor-fixed plastic guide about 60 millimetres (2.4 in) wide which is fixed below the door at the midpoint of its run. A groove is cut into the bottom of the door which runs over this guide, preventing lateral movement of the door. With a glass door, the panel runs through the guide as illustrated. Because the door is always engaged in the guide, when the door is open, the floor is clear; hence 'clear threshold'.

The bottom of the doors are held in place on tracks. The rollers also have safety locks that prevent the doors from jumping off the tracks. Additional devices include soft-closers and dampeners, which make it easier to close the door gently.

A popular top-hung sliding door type is the barn door, inspired from countryside barns, in modern homes of Scandinavian styles.

Bottom-rolling door gear

[edit]

Sometimes a top-hung system cannot be used, as the weight of the door cannot be supported from above; in this case, a bottom-rolling system may be used.

A bottom-rolling system consists of two rollers (sometimes called a sheave) at the bottom of the door running on a track, and two guides at the top running in a guide channel. As all the weight of the door is concentrated on the two bottom wheels, more force is needed to move the door than on a top-hung system.[citation needed]

Lift-and-slide door gear

[edit]

A sliding door that is lifted from the frame during opening and closing is called a lift-and-slide door. This allows for a better seal, with less draught and better soundproofing.[1]

Automatic sliding doors

[edit]
Automatic door in Hong Kong

Some sliding doors contain a motor and activation system to open them. These are called sliding door operators. Automatic sliding doors are commonly found in offices and shop entrances. These doors contain a magnetic locking mechanism that automatically unlocks during emergencies.[1]

Usage

[edit]

Advantages of sliding doors are the small space requirements for door-opening, and their relative ease of automation. The mechanism is also secure, since it cannot be lifted out of its hinges.[6] Sliding doors are commonly found as store, hotel, and office entrances, used in elevators, and used as patio doors, closet doors and room dividers.[7] Sliding doors are also used in transportation, such as in vans and both overground and underground trains. Volkswagen used these doors in the Volkswagen Fridolin produced between 1964 and 1974.

See also

[edit]

References

[edit]
  1. ^ a b c d Hochberg, Anette; Hafke, Jan-Henrik; Raab, Joachim (2010). Open I Close: Windows, Doors, Gates, Loggias, Filters. Birkhäuser Verlag AG. p. 116.
  2. ^ Moeller, Walter O. (1976). The Wool Trade of Ancient Pompeii. p. 47.
  3. ^ Bulwer Lytton Baron Lytton, Edward (1893). The Last Days of Pompeii. Estes and Lauriat.
  4. ^ Jones, Peter; Kornblum, Mary (1987). Shelves, Closets and Cabinets. Sterling Publishing Company, Inc. p. 80.
  5. ^ Hall, Dennis J.; Giglio, Nina M. (2011). Graphic Standards Field Guide to Residential Construction. John Wiley & Sons. p. 323.
  6. ^ Reid, Robert N. (2005). Facility Manager's Guide to Security: Protecting Your Assets. The Fairmont Press, Inc. p. 80.
  7. ^ Simmons, Leslie L. (2011). Olin's Construction: Principles, Materials, and Methods. John Wiley & Sons.
[edit]

Media related to Sliding doors at Wikimedia Commons

 

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Difficulty opening and closing is the most common sign of roller problems. Worn, flat, or broken rollers create friction, making the door stick or jump.
Signs include the door coming off the track, loud grinding or popping noises when operating the door, visible damage to the rollers themselves, or the door sagging or dragging on the bottom track.
In most cases, yes. Replacing rollers is a relatively straightforward DIY project with common tools. However, if the track is damaged or the door is extremely heavy, professional help might be necessary.
If the track is bent, dented, or significantly corroded, it may also need attention. If rollers frequently jump the track, even after replacement, the track is likely the culprit.