When there is an airspace between the 2200 series underlayment.
Roofing reflective underlayment.
It is a 99 pure polished aluminum facing heat laminated to a closed cell foam core.
The new 2200 series underlayment s polyethylene bubble material sandwiched by a layer of metalized foil and a white polyethylene sheet provides an added r value of 1 1.
Therma sheet roofing underlayment is manufactured in the usa by environmentally safe products inc.
Rfoil reflective insulation 2200 series underlayment in an effective energy efficient barrier that can greatly reduce transfer of radiant heat through roofing.
Between the ceiling of the house and the metal roof you might have a layer to act as a water barrier another one for thermal insulation and yet another reflective layer for insulation.
Preferably it is used in conjunction with traditional felt paper.
This smart and competent armorlay 25 synthetic roof underlayment is the most useful thing for every house roof.
Underlayment is a popular option to protect your new house temporarily to keep the roofing subfloor etc.
And this synthetic roof underlayment becomes famous due to its quality easy installation process and affordability.
The reflective layer applies in hot regions to resist the build up of heat in the building.