Flat Roof Overlay Board

Flat roof overlay board for insulating flat roofs old stock.

Flat roof overlay board.

Jm utilizes third party certification by ul. The tr27 range of insulation from kingspan has been developed specifically for insulating flat roofs. Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot. 1 4 spans flute widths up to 2 5 8.

R values 28 tested in accordance with astm c518 spannings. 1 4 dens deck roof board. Factory cut taper that is easy to install and cut builds slope into an otherwise flat roofing system allowing water to drain freely off the roof. Ideal for re roof applications or as a new substrate for a modified bitumen or bur roofing membrane asphaltic cover boards are dimensionally stable providing strength.

A flat roof that had been over coated with a liquid based system which itself is breaking down a bonded overlay would not be suitable although with some preparatory works a mechanically fastened overlay system might be an option. Iko offers protectoboard which is composed of a mineral fortified asphaltic core between two non woven glass fiber mats. Tr27 kingspan flat roof insulation. Find out more in our guide to insulating a flat roof.

Densdeck roof boards can replace any generic type x gypsum board in any roof assembly in the ul fire resistance directory under the prefix. The rockwool flat roof overlay board is ideal for both domestic and commercial projects as it provides a high quality smooth flat finish to existing roofs and absorb uneven surfaces. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. Tr27 insulation consists of high performance pir boards with glass facings on either side.

Consists of recycled newsprint to provide strength to the board as well as high recycled content.