I am in the process of having a new roof installed. What are my options in regards to improving its' insulating properties?
I am going to convert my loft, so was researching this subject as well. I once saw on TV (I think on Renovation program) how they make insulation from sredded paper - this was a very inexpensive and very efficient way of doing it. Also they said that the best insulation is the one made from sheeps' wool. You can buy this from major DIY stores. Have a look at the links below
I’m guessing you are asking about the attic. Spray cellulose insulation is the way to go. Very green with 80% or more of the product made from recycled paper. Wet or dry depending on the need, with some system allowing for a DIY application.
No matter what material you use for the actual roofing, make sure you have a Radiant Barrier installed at the same time. There are several different ways this can be achieved, your roofing contractor can (and should) advise you on the best method for your home.
The new metal roofs offer both the durability and the insulation. Metal roofs come in many shades and are made to reflect the heat away from the house. The insulation in these roofs are often the highest R factor.
If you have clear access to your rafters, the best insulation possible (after installing your vent baffles) is sprayed on foam. I didn't say polyurethane foam on purpose, as there is now a soy based foam available with exactly the same working and thermal characteristics as the petro-poly goop, with none of crude oil. But i digress. Sprayed on foam has the advantage of not only thermal insulation but it also seals everything that it comes in contact with, thus stopping any air movement, something that no fiberglass or extruded polyurethane could ever do. Industry experts are still debating this but, it looks like 1 inch of sprayed on foam (with it sealing qualities) does as much, if not more, than 3 1/2 inches of fiberglass and, foam will never sag or absorb moisture like glass does. Fill your rafter spaces and gloat to the neighbors when your bills come in. :)
