Predominately an ‘in plane’ rooflight is a rooflight that is in plane (by which we mean Flush) with the rest of the roof that it sits on.
An in plane rooflight doesn’t require any changes to the pitch of the roof, for example a Velux roof window. Other examples would be polycarbonate or GRP sheeting which are manufactured to the same profile as the rest of the roof sheets, often seen on large commercial buildings.
Out of plane rooflights mean that the rooflight itself sits out of plane. By this we mean that it is not in line or flush with the roof covering.
Although some rooflights appear to be flush with the roof, they are fixed to a weathered upstand of 150mm housed within a concealed/free draining deck or with a secret gutter surrounding the rooflight. The upstand height is mainly based on minimum dimensions that meet the weathering requirements of the waterproofing manufacturer.
For example, a walk on rooflight on a flat roof may appear to be an in plane rooflight. However, although it may look as though it’s flush, the rooflight is only flush to the finished surface and not flush to the roof waterproofing layer, making it an out of plane rooflight.
There are other products available from rooflight manufacturers such as sliding box units used for access or eaves units which feature glass in horizontal and vertical planes; these products are also considered to be out of plane as they are usually fixed to a wall and therefore separated from the roof itself.
Aesthetically speaking, customers often demand that their rooflight product appears flush fitting. Most rooflights require fitting to a kerb but can give the effect of a flush rooflight, but it is important to note that the appearance of flush fitting and being in the same plane are not always the same thing.
To understand more about the design and specification of glass rooflights, please call our technical team or request a CPD.
|cookielawinfo-checkbox-advertisement||1 year||Set by the GDPR Cookie Consent plugin, this cookie is used to record the user consent for the cookies in the "Advertisement" category .|
|cookielawinfo-checkbox-analytics||11 months||This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".|
|cookielawinfo-checkbox-functional||11 months||The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".|
|cookielawinfo-checkbox-necessary||11 months||This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".|
|cookielawinfo-checkbox-others||11 months||This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.|
|cookielawinfo-checkbox-performance||11 months||This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".|
|CookieLawInfoConsent||1 year||Records the default button state of the corresponding category & the status of CCPA. It works only in coordination with the primary cookie.|
|__cf_bm||30 minutes||This cookie, set by Cloudflare, is used to support Cloudflare Bot Management.|
|SRM_B||1 year 24 days||Used by Microsoft Advertising as a unique ID for visitors.|
|_ga||2 years||The _ga cookie, installed by Google Analytics, calculates visitor, session and campaign data and also keeps track of site usage for the site's analytics report. The cookie stores information anonymously and assigns a randomly generated number to recognize unique visitors.|
|_gat_UA-48441660-1||1 minute||A variation of the _gat cookie set by Google Analytics and Google Tag Manager to allow website owners to track visitor behaviour and measure site performance. The pattern element in the name contains the unique identity number of the account or website it relates to.|
|_gcl_au||3 months||Provided by Google Tag Manager to experiment advertisement efficiency of websites using their services.|
|_gid||1 day||Installed by Google Analytics, _gid cookie stores information on how visitors use a website, while also creating an analytics report of the website's performance. Some of the data that are collected include the number of visitors, their source, and the pages they visit anonymously.|
|calltrk_session_id||1 year||This cookie is set by the Provider CallRail. This cookie is used for storing an unique identifier for a user browser session. It is used for tracking the number of phone calls generate from the website.|
|CONSENT||2 years||YouTube sets this cookie via embedded youtube-videos and registers anonymous statistical data.|
|vuid||2 years||Vimeo installs this cookie to collect tracking information by setting a unique ID to embed videos to the website.|
|MUID||1 year 24 days||Bing sets this cookie to recognize unique web browsers visiting Microsoft sites. This cookie is used for advertising, site analytics, and other operations.|
|test_cookie||15 minutes||The test_cookie is set by doubleclick.net and is used to determine if the user's browser supports cookies.|
|VISITOR_INFO1_LIVE||5 months 27 days||A cookie set by YouTube to measure bandwidth that determines whether the user gets the new or old player interface.|
|YSC||session||YSC cookie is set by Youtube and is used to track the views of embedded videos on Youtube pages.|
|yt-remote-connected-devices||never||YouTube sets this cookie to store the video preferences of the user using embedded YouTube video.|
|yt-remote-device-id||never||YouTube sets this cookie to store the video preferences of the user using embedded YouTube video.|
|yt.innertube::nextId||never||This cookie, set by YouTube, registers a unique ID to store data on what videos from YouTube the user has seen.|
|yt.innertube::requests||never||This cookie, set by YouTube, registers a unique ID to store data on what videos from YouTube the user has seen.|
|_clck||1 year||No description|
|_clsk||1 day||No description|
|calltrk_landing||1 year||This is a functionality cookie set by the CallRail. This cookie is used to store the landing page URL. It helps to accurately attribute the visitor source when displaying a tracking phone number.|
|calltrk_referrer||1 year||This is a functionality cookie set by the CallRail. This cookie is used to store the referring URL. It helps to accurately attribute the visitor source when displaying a tracking phone number.|
|CLID||1 year||No description|
|SM||session||No description available.|
By providing this information, it allows us to forward your enquiry on to your local Technical Specification Manager and enables them to provide you with a formal quotation quicker.