When it comes to insulating your home, there are a few key differences between new construction and existing homes. It's always cheaper to install the recommended insulation levels during initial construction rather than adding insulation later on. Many insulation sites are closed during the construction process and it is very difficult to add insulation to these places later on. The most commonly used building insulation materials are aerosol foam, fiberglass and cellulose.
Let's take a look at the best insulation for a new construction. Loose-filled fiberglass is the most popular choice for attic insulation in new-build homes, with an R value of approximately 2.5 per inch. This type of insulation requires a large machine to blow it, so you can't just buy it in bags and spread it around yourself. It's important to know all the options you have when it comes to creating your dream home, whether you're looking for the most energy efficient insulation or simply focusing on the most cost-effective material.
Cellulose is another great option for insulating attics in new construction homes. This type of insulation is made from shredded and recycled paper with boric acid added to combat insects and resist fire. The installer must submit a signed and dated statement describing the insulation installed and indicating the thickness, coverage area, R value and the number of bags installed. In a cathedralized attic, the insulation is placed on the underside of the roof rather than on the attic floor.
A ventilated attic can also reduce air conditioning loads in summer compared to a cathedralized attic. When insulating walls in new construction homes, both an insulating coating and cavity insulation are specified as they work best together as a system. If you think fuel costs will increase more than that, you should install as much insulation as shown. Placing insulation right between wall studs or right between attic or floor beams doesn't work as well in metal-framed houses as it does in wood-framed houses.
For both the mezzanine and the rim joist, it is advisable to use an insulating material that is not sensitive to water and that prevents indoor air from coming into contact with the cold surface. It's important to purchase the right type of insulation according to the recommended R value and check the product label to determine the appropriate thickness of the insulation. Before installing attic insulation, make sure to stop any air leaks as they can be hidden by the insulation and become less accessible. Attic insulation is essential if you want to prevent your hard-earned money from going to waste, so make sure you invest in quality materials.
If you're still unsure about which type of insulation is best for your home, check with the North American Insulation Manufacturers Association who will assure you that fiberglass or mineral wool are definitely your best choice for attic insulation.
