SuperQuilt Flat Roof | YBS SuperQuilt Multifoil Insulation is LABC & BDA certified for the use in Flat Roof projects. It is accepted for use both internal of the joists and also external of the joists, depending on if a cold or warm roof detail is desired. Most commonly, SuperQuilt is stapled internally before the plasterboard is installed to reduce head height & overall costs.

SuperQuilt Flat Roof | YBS SuperQuilt is commonly used in a double layer application to avoid/reduce the amount of Rigid PIR required, if a double solution solution is being used, please ensure there are adequate airspace’s between each layer. If SuperQuilt is being installed internally, with no insulation on the external of the joists, ensure there is a 50mm clear ventilated cavity. If you require further advise on if ventilation is required in your flat roof project, please click visit the contact us page and our tech team will provide assistance.

Specific U-value required for the project? Visit our free to use online U-value Calculator to find the best solution on your project.

YBS SuperQuilt is applied either vertically or horizontally, pulled tight and stapled to timber joists at minimum 300mm centers.

Ensure an overlap by approx 50mm, and fully tape and seal using Thermaseal Foil Joining Tape. This will ensure SuperQuilt works as a high performing vapour control layer. (When internal insulation layer)

It is essential to allow SuperQuilt in flat roofs to have an airspace either side of the product, this is usually created by battens or cavity’s within the joists. Failure to create a cavity either side will result in a reduction of performance, and potentially decrease to the U-value.

Installation of SuperQuilt over joist or under joist, or double layer should be in harmony with the manufacturers certificate and recommendations.