TAMKO MetalWorks and Radiant Barriers: Manage Moisture First
Bulletin dated: August 28, 2019
TAMKO allows radiant barriers with MetalWorks when installation requirements are met. The notice warns that an unsuitable arrangement can restrict ventilation or trap vapor, allowing condensation and moisture damage
TAMKO technical bulletin: Use of Radiant Barriers with MetalWorks Steel Shingles.
What this means for your roof
TAMKO allows radiant barriers with MetalWorks when installation requirements are met. The notice warns that an unsuitable arrangement can restrict ventilation or trap vapor, allowing condensation and moisture damage. The roof design must coordinate the barrier, ventilation and moisture control.
A useful question for your contractor
How will this assembly avoid trapped moisture beneath the steel shingles?
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 MetalWorks Steel 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.