When we decided to get a radiant barrier we did not know what to expect. We called and got a few different contractors to come out. Two of the companies offered us great deals. We decided to go with the first company we interviewed because they quoted that they could get the job done very quickly. We gave them the money for the materials and they never came back. We later hired a different company that got the job done. Once the barrier was in we were very glad we went through all of the hassle. It has saved us tons.