Therma sheet used under your roofing system will help cut your summer air conditioning bills.
Under roof reflective insulation.
The protection provided by a reflective barrier under a roof will degrade over time as dust accumulates on the shiny surface.
Performance claims are based on an assembly including an air gap and the perfectly shiny surface when the product is installed.
To be effective the reflective surface must face an air space.
Reflective insulation is made from.
Found in major outlets such as in home depot s insulation aisle reflectix comes in tightly spooled rolls of 25 by 2 feet of shiny reflective foil look bubble wrap texture insulation in plastic bags.
The radiant barrier should be installed in a manner to minimize dust accumulation on the reflective surface.
It greatly reduces attic heat gain making this space more usable and the rest of the house cooler.
It will help you to eliminate problems that may come when the house becomes extremely cold in the winter and terribly hot in the summer.
Fiberglass roof insulation works like a blanket spread over your house keeping thermal energy out during the summer and keeping the heat in during the winter.
In order to add moisture barrier under metal roof you can spray the undersides of the roof by using a thick layer of polyurethane spray foam.
Standard insulation products do not make claims based on the assembly.
This highlights a key problem with reflective products.
Low e reflective insulation resists all three types of heat transfer.
Dust accumulation on the reflective surface will reduce its reflective capability.
Radiant barriers and reflective insulation systems work by reducing radiant heat gain.