If you want to make your house more energy efficient and improve its comfort, the first step is insulating the exterior walls. There are many options out there, and it is important to find a qualified installer or at least understand the basics of building science. This will help avoid getting ripped off by unqualified general contractors or doing something that might not work as well as it could.
The best exterior wall what is external wall insulation is open cell spray foam. This is a water blown spray insulation that contains two components: polyisocyanurate and resin. These are kept separate until the time to install the insulation, and the mixing takes place at the job site. Open cell spray foam creates an air seal, which can help homeowners maintain a stable temperature all year round.
Transforming Solid Walls: The Ultimate Guide to External Insulation
Other types of insulation include fiberglass, cellulose, and rigid foam board. Each type has its own benefits and drawbacks, so it is important to consider which option is the best for your home. For example, cellulose can be messy and can be difficult to install in old homes with brick or stone walls. It is also known to shift over time and can leave gaps of no insulation.
Another disadvantage of cellulose is that it can absorb moisture, which can lead to mold or rot. It is also known to absorb odors from cooking or smoking, which can be hard to get rid of. Finally, if it is not installed properly, it can cause cold bridging and air leakage in the home.
