Fitting & Installation
FLAT ROOF SKYLIGHTS
DOUBLE & TRIPLE GLAZED
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Easy-to-install & Hassle Free
All our roof-lights can be easily installed by roofers and builders – and the below installation guide should provide everything needed to carry out the installation.
The roof-lights can be installed on an insulated upstand coupled with an anodized aluminium angle trim, which your roofer/builder can provide.
All diagrams are used for example purposes and guidance as all projects vary. They may be based on architecture drawings, so upstand dimensions may vary. Please feel free to contact us should you wish to order a custom designed roof light to suit wider upstands, which require more than 100mm overhangs.General Guidelines
Right Glaze roof-lights are one of the most easiest to install by builders or roofers on the market. Below is a simple guide, but please feel free to contact us via e-mail or phone should you wish any further technical support.
How to prepare your roof
The first step in purchasing your roof-light is to measure the structural opening where the roof-light will be installed. You should allow for 5mm tolerances all around to allow the bottom pane of the roof light to fit smoothly into the opening.
For example: if your tight opening measurements are 1010mm x 1010mm we would recommend you purchase a roof-light with a bottom pane of 1000mm x 1000mm so it slots in smoothly.
The measurements on our website refer to the STRUCTURAL OPENING.
For standard units – the top pane would have a black 100mm overhang all around the top pane. This would then make the overall size of the top pane 1200mm x 1200mm in this example. We can increase the size of the overhang if required, if the up-stand width is wider. This may come at an additional cost.
The diagram below shows the sectional view of installation.
Preparing Your Roof
Structural glazing silicone is used to bond the double/triple glazed seal units onto the roof pane to form a roof light. The roof-light IGU is simply secured onto the timber kerb built by your roofer or builder as part of the roof construction.
The timber upstand should protrude 150mm above the roof. The pitch should be 5 degrees, which would be sufficient enough to allow water to flow down and self-clean.
Installing the roof light
The final step to finish the roof before installing the roof light is to apply your roof covering up to the side of the up-stand to make it weather proof as illustrated below.
The timber up-stand should protrude atleast 150mm above the roof and the pitch should be 5 degrees, sufficient to allow water to flow down. Please note self clean option only works effectively at pitches of 10 degrees or more. Before sealing the product with the silicone, water can be applied to test the water flow. If pooling occurs, a higher pitch may be required.
Bottom pane should be supported on 4 sides once set it place, the aluminium angle can be fitted before the plasterboard and covered with plasterboard or fitted after the plaster board. Alternatively, a timber batten with aluminium strip on the top can be fitted to support the roof light.
Apply adequate compatible low modulus silicone as per silicone suppliers data sheet to the top of the up-stand firmly placing the roof-light onto the up-stand. Pressure should be applied all round the 100mm overhang to ensure the silicone spreads and seals any gaps and then finish off the silicone all around with silicone tool. Once cured apply structural silicone as per suppliers data sheet to the bottom aluminium angle trim flat surfaces firmly fitting them in place. Excess silicone should then be wiped away with a finishing tool. Dowell 791 low modulus weather proofing silicone and Dowell 895 structural sealant are compatible with Dowell 3363. Setting blocks can be used to achieve sealant thickness required.
At this stage the bottom and top panes should be supported. Sealants compatible with the top of the up-stand, aluminium angle trim, glass, setting blocks and Dowell 3363 silicone should be used. Some sealant suppliers may require primer to be applied to the surface.
Please note all roof lights are made to order and sizes can not be changed once glass is cut or toughened. We recommend the specification, sizes and instructions are reviewed and understood by the installer before proceeding with the order.