How do I install these types of roofs?
Warm Roofs
Warm roofs have two installation methods, mechanical fix or fully adhered solutions.
For mechanical fix we recommend the use of our warm deck fixings which consist of a plastic tube and metal screw. This reduces the risk of any cold bridging. This can be done with a foil faced board such as Kingspan TR26 and/or an upper timber deck. You need a 18mm lower deck and a vapour barrier installed below the foil faced insulation. Its advisable to use a bitumen backed VCL such as ALUTRIX to ensure punctures from the screws self seal.
For a fully adhered system you need to use a fully adhered vapour barrier such as ALUTRIX with FG35 primer. Followed by a tissue faced insulation board such as Kingspan TR27 or Rockwool Hardrock adhered to this with an insulation glue. We recommend Dow Insta-Stik. You can then use a single ply membrane with suitable glues directly onto the tissue faced insulation or adhere a further layer of timber over the top if you want to use an EPDM with a water based glue or a GRP system.
