Spray foam is a little bit of magic. We take two chemicals; isocyanate and polyol resin and mix them together in just the right proportions and spray it where you want insulation. That magic mix then expands to between thirty and sixty times its original volume which perfectly fills small gaps and instantly coats surfaces with a perfect layer of foam which provides instant insulation. Depending on the job at hand we can vary that with other types of gun-sprayed foams including polyurethane and polyisocyanurate to get exactly the properties required to ensure perfect thermal or sonic insulation for your property. Where once spray foam was reserved for commercial properties it is now a tried and trusted insulation solution for homes.
Benefits of Spray Foam
There are some very good reasons for spray foam insulation for your property. For a start it’s probably the most effective air barrier you can get in home insulation. Rolled fiberglass will always have small but significant airspaces around the edges, but sprayed foam simply expands to fill all available space which means that it leaves no air space at all - at least it does if it’s sprayed by our professional insulators. It’s also a powerful moisture barrier for much of the same reason. Where other insulation materials leave gaps that moisture can pass through and build up in spray foam is moisture proof. In fact it is so moisture proof that it continues to function as thermal insulation even when wet. What better way of protecting your home and reducing you heating and cooling bills?
Because it expands to fill gaps and can plug them completely, spray foam can bring added structural strength to your property. It binds solidly within the space and while the two main types of foam - open cell and closed cell - have different properties both will increase the structural strength of the insulated area in a way that other insulation types won’t.
Open Cell Foam
Open cell foam is much lighter than closed cell and that has the advantage that it is easier to work with which can be important if, for example, you are going to install wiring into an insulated gap filled with foam. Open cell foam also has the advantage that it expands much more than its denser cousin; up to one hundred times the size of the original sprayed fluid. That makes it a great way to fill up irregular and large gaps in attics, eaves, and elsewhere where denser closed cell foam might be tougher to apply.
Closed Cell Foam
Closed cell foam is denser than open cell and that has a number of consequences. It may require more skill and time (and therefore cost) to apply because it needs to be applied in several coats, each of which expands less. It is also less effective than open cell foam as a sound insulator. However its density makes it much more effective as a thermal barrier which means it can offer twice the insulation of open cell. We often use a mix of both in different locations around a property in order to best meet your needs and match your budget.