Item 169827 model 5003002.
Roofing reflective underlayment.
Underlayment is a popular option to protect your new house temporarily to keep the roofing subfloor etc.
It is a 99 pure polished aluminum facing heat laminated to a closed cell foam core.
The product is very lightweight and easy to install.
When there is an airspace between the 2200 series underlayment.
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.
This smart and competent armorlay 25 synthetic roof underlayment is the most useful thing for every house roof.
Preferably it is used in conjunction with traditional felt paper.
The reflective layer applies in hot regions to resist the build up of heat in the building.