Atlas Roof Deck Insulation is well established in the building materials industry through its ACFoam® family of products. Cores of these products are polyisocyanurate (polyiso) foam, the most widely used and accepted rigid insulation in use today. It is estimated that 60-65% of all commercial new or re-roofing applications nationwide use polyiso. Rigid polyiso is a safe, cost-effective, sustainable and energy efficient construction material.

Some of the benefits of polyiso insulation are:

• The highest Long Term R-value per inch of thickness
• The only roof insulation with third party certification
• Zero ozone depletion potential (ODP)
• Negligible global warming potential (GWP)
• Cost effective solution

ACFoam® CrossVent

Designed for use over unventilated roof decks. CrossVent® allows heat to dissipate while providing a nailable surface and efficient insulation in a one-step labor saving process.

ACFoam® CrossVent RB

What if you could have a prefabricated, ventilating nailable insulation AND a Radiant Barrier? Now you can! CrossVent® RB combines superior R-values with radiant heat protection. Radiant heat is formed when rays of energy from the sun strike an object and transform from motion energy to heat energy. Standard nail base insulation does a good job of reducing convective and conductive heat transfer. However, it does little to reduce radiant heat transfer, which contributes significantly to the total heat flow into the building. Only CrossVent® RB substantially limits
Conductive AND Radiant Heat Transfer.

Air Space Calculator

For guidance in choosing the air space for CrossVent and CrossVent RB please consult the helpful Ventilated Roof System Calculator. Proper roof ventilation is critical to the longevity and effectiveness of the roof system. The ventilation effectiveness is influenced by:

• Roof Slope
• Depth of Air Space
• Air Temperature
• Wind Velocity
• Other Factors

For guidance with product specifications, please visit the Ventilated Roof System Calculator.

ACFoam® Nail Base

ACFoam® Nail Base Insulation is ideal for use over sloped solid wood decks having a slope greater than 1/4" per foot. The OSB provides an excellent base for nailing non-asphaltic shingles.