Bulky materials resist conductive and -- to a lesser degree -- convective heat flow in a building cavity. Rigid foam boards trap air or another gas to resist conductive heat flow. Highly reflective foils in radiant barriers and reflective insulation systems reflect radiant heat away from living spaces, making them particularly useful in cooling climates. Other less common materials such as cementitious and phenolic foams and vermiculite and perlite are also available.
If you decide that it’s time to improve your home’s insulation, a Tacoma insulation specialist working for a reliable contractor like Patriot Roofing can help you choose what type to use and where to insulate.
http://patriotroofing.biz/info-article/energy-efficiency-choosing-the-right-insulation-for-tacoma-wa-homes/
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