Flat Roof Tapered Insulation Chart

Johns manville tapered polyiso offerings please refer to the previous page for typical physical properties.

Flat roof tapered insulation chart.

Slope cross sections published feb. When correctly installed tapered insulation helps eliminate problems due to ponding water and can extend the longevity of your low slope roofing system. Roofing best practice for the 21st century we examined the cost analysis of the three standard options in a warm flat roof application across four 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 43 cheaper than the. Insulfoam taper is cut from the same high quality eps as our flat insulroof products and meets or exceeds the.

Installing tapered insulation also negates the requirement for a structural roof fall helping to reduce the overall cost of the roof. Slope dimension lttr value nominal. Flat tapered eps roofing insulation. The standard tapered panel size is 4 x 4.

Standard material is johns manville enrgy 3 tapered and flat polyisocyanurate roof insulation. Tapered roofing insulation insulfoam i vii ii ix xiv and xv. By creating appropriate falls and drainage a flat roof is more likely to last for its designed life by channelling water to outlets efficiently. 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.