Tapered Roof Insulation Sizes

If the tapered maximum thickness exceeds that permitted by 457 a thermal barrier may be required.

Tapered roof insulation sizes.

Standard material is johns manville enrgy 3 tapered and flat polyisocyanurate roof insulation. 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. Designed to provide positive drainage of water. Two way and four way systems.

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. 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. 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.

The added thickness to produce slope to drain is a positive factor in today s energy conscious society. The standard tapered panel size is 4 x 4. Firestone iso 95 gl tapered insulation. 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.

Thickness to be 4 2 at the low point or 5 2 4 away from the drain on a per foot tapered system. Firestone tapered iso 95 gl polyiso insulation provides an efective and economical solution. 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. 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.

877 775 1769 hunterpanels com 0716 iecc 2015 sec. A flat polyiso underlayment board often referred to as flat fill is used beneath continuing repeating tapered panels. When correctly installed tapered insulation helps eliminate problems due to ponding water and can extend the longevity of your low slope roofing. C402 2 roof assembly exception 2 allows a 1 inch insulation thickness variation 4 0.

When correctly installed tapered insulation helps eliminate problems due to ponding water and can extend the longevity of your low slope roofing system. Tapered roof layout tapered roof insulation.