TAMKO distinguishes integrated decking barriers, reflective insulation underlayments and rafter-mounted sheets. Conditions differ by arrangement, including ventilation and perforation requirements
TAMKO technical bulletin: Use of Radiant Barriers with Asphalt Shingles.
What this means for your roof
TAMKO distinguishes integrated decking barriers, reflective insulation underlayments and rafter-mounted sheets. Conditions differ by arrangement, including ventilation and perforation requirements. The notice does not accept liquid-applied barriers on the underside of sheathing. Moisture management needs to be considered with the entire roof and attic assembly.
A useful question for your contractor
Ask which category your radiant barrier falls into and how its installation meets the notice and current product instructions.
Ask for the answer to be tied to the actual roof condition and the exact product being installed. Keep the agreed repair or installation detail with your estimate and project photos.
Bulletin dated: August 28, 2019. The date shown identifies the manufacturer document used for this summary.
Read TAMKO: Use of Radiant Barriers with Asphalt Shingles
This homeowner summary explains the cited bulletin. The complete manufacturer document and current product instructions govern the installation details. A requirement for one manufacturer or product should not be transferred to another without checking.