Champaign Roofing: Article About The Cons Of SPF
Sprayed polyurethane roofing, or SPF, is gaining popularity as a roofing material. It is relatively cheap, easy to install and attractive. Many homeowners are requesting that Champaign roofing companies install it on their homes. As popular as SPF is becoming, it has downsides that homeowners should be aware of.
To understand what faults SPF has and why, one must first understand its strong points. SPF is very good at preventing leaks. It is certainly better than competing materials such as plastic sheets. SPF is also an excellent insulator. Roofs collect quite a lot of heat from the sun, but this heat must not be passed into the house. SPF may very well be the best insulator in this regard.
Despite all of its potential, SPF does have several major flaws. Some roof materials do not allow SPF to set properly. This is especially true of very old roofs. Also, houses in rainy climates may have weak spots where water has previously pooled. While SPF will prevent this, it does add extra weight to the roof. This could be the last straw in a roof that is already weakened.
SPF is harder to apply than many of the other roofing options. While it may seem easy to spray foam on a roof, it is a difficult process.
A roofing expert from Roofs By Rodger of Champaign IL would be happy to answer any question you have about roof replacement or windows.
It requires a lot of knowledge to mix the foam properly, and improperly mixed foam is ineffective as a roofing material. It also requires a surprising amount of skill to apply properly. SPF must be applied at a constant thickness over the entire span of the roof, and doing so quickly is hard. This job is best left to an experienced contractor.
Professionals will understand the details involved in applying SPF. The foam needs to be roughly an inch and a half thick across the whole roof. Too thick and it will not insulate properly. Too thin and it will not set on the roof without cracking.
Believe it or not, SPF is quite expensive. One might think that it should be less expensive than normal foam, but it is actually more so. The argument can be made that it works better, but how much better? It may not work well enough to justify the extra cost. This is up to the homeowner, of course, but needs to be considered prior to taking the plunge. A little thinking may reveal SPF to not be the right option after all.