Flat Roof Tapered Insulation Board

By creating appropriate falls and drainage a flat roof is more likely to last for its designed life by channelling water to outlets efficiently.

Flat roof tapered insulation board.

When correctly installed tapered insulation helps eliminate problems due to ponding water and can extend the longevity of your low slope roofing system. Tapered insulation is also ideal for existing roofs that may not already incorporate a structural fall. To drain and insulate dead level roof decks. However we lose r value where the taper is thinnest and need to insulate under the sheeting.

The boards can simply be installed on top of the existing waterproofing layer. Because this is a specialty product it costs about 60 80 more than a flat foam insulation of the same thickness. Insulfoam i vii ii ix xiv and xv. Manufactured from lightweight foam control eps tapered expanded polystyrene eps roof insulation is a value engineered system that has been proven in new and reroof applications all over the country.

Insulfoam taper is cut from the same high quality eps as our flat insulroof products and meets or exceeds the requirements of astm c578 standard. We are insulating a flat roof with tapered rigid insulation over a moisture barrier and then capped with modified bitumen. High performance tapered insulation for flat roofs kingspan thermataper tt47 is a high performance insulation with a fibre free rigid thermoset polyisocyanurate pir core. It is readily available in the two most popular and efficient tapers 1 8 3 18 mm per foot 305 mm 1 and 1 4 6 35 mm per foot 3 18 mm 2.

Thus a 0 5 1 5 inch board would cost about 80 85 per 100 sq ft. Tapered expanded polystyrene eps roof insulation was developed more than 30 years ago with a dual purpose in mind. With a thermal conductivities as low as 0 024 w mk it is designed to enhance water drainage for flat roofs waterproofed with full adhered single ply partially bonded built. It can also be made using eps rigid or high density styrofoam.

Xtratherm offer a comprehensive range of high performance pir flat roof insulation boards that includes the xf range of tapered insulation providing comprehensive solutions for all flat roof projects whatever the choice of waterproofing system with environmental scoring within the bre green guide. Roofing best practice for the 21st century we examined the cost analysis of the three standard options in a warm flat roof application across three different case studies of non residential new builds and discovered that using a tapered insulation system to achieve a u value of 0 16 w m k could be up to 26 9 cheaper. Standard tapered insulation is typically an iso board with fiberglass mats on both sides.