Tapered Roof Insulation Sizes

The added thickness to produce slope to drain is a positive factor in today s energy conscious society.

Tapered roof insulation sizes.

The standard tapered panel size is 4 x 4. Tapered roof layout tapered roof insulation. 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. 877 775 1769 hunterpanels com 0716 iecc 2015 sec.

Hunter panels roofing tech topic r105 15 franklin street portland me 04101 888 746 1114 fax. Thickness to be 4 2 at the low point or 5 2 4 away from the drain on a per foot tapered system. Designed to provide positive drainage of water. Tapered polyiso panels are manufactured in standard 4 by 4 sizes with a minimum thickness of at its low edge and maximum thickness of 4 for a single board.

Insulation tapered polyiso foam roof insulation 3 5 tapered polyiso insulation provides a logical and economical answer for roofs that do not permit adequate positive drainage like low slope roofs. When correctly installed tapered insulation helps eliminate problems due to ponding water and can extend the longevity of your low slope roofing. Standard material is johns manville enrgy 3 tapered and flat polyisocyanurate roof insulation. C402 2 roof assembly exception 2 allows a 1 inch insulation thickness variation 4 0.

A flat polyiso underlayment board often referred to as flat fill is used beneath continuing repeating tapered panels. The roof consists of pre designed pieces of expanded polystyrene having a slope of 1 8 3 16 or 1 4 per foot as required. Two way and four way systems. Firestone iso 95 gl tapered insulation.

That thickness has to be accounted for in the wood nailers when developing the roof edge detail as well as in wall flashing heights and curbs. If the tapered maximum thickness exceeds that permitted by 457 a thermal barrier may be required. Taper is not recommended for use on level roof decks. Properly installed tapered iso 95 gl insulation can extend the life of the roof assembly by eliminating problems associated with ponded water.

Thermapink tapered roof insulation has been tested over steel roof decks without a thermal barrier in accordance with ul standard 1256 and is listed for use direct to deck in accordance with ul roof deck construction 457. The roof drain with a tapered insulation system sloped at inch per foot and 2 inch minimum at the roof drain will be 14 inches thick at the roof edge.