Spray wall insulation also known as spray foam insulation is mainly done with the aid of two particular types of spray foams. This is open cell (polyurethane) and closed cell (isocyannurate). An open cell foam is porous, while its counterpart is not. The closed cell has greater R-Value (term for describing thermal resistance), making wall foam that it forms to prevent formation of mold, which can lead to ill-health.
So how does this type of insulation work to keep your home at the required temperature? To start with, foam is applied using spray gun on spaces or cracks found on walls. If this is properly done air flow out of your home is brought down to the barest minimum possible, even to as low as ten percent or lesser. This means spray wall insulation including other types of insulation aim to prevent temperature loss in your home.
This foam that is used to do this insulation comprises of two substances and one is a polymer, an example is isocyanurate and the other a foaming agent, which makes it to swell to nearly a hundred times its previous volume size occupying every space and gap that you have, creating wall foam that will close all exit points on your walls.
The benefits of this type of insulation are quite much in addition to the health benefit mentioned earlier. First, it makes your home more comfortable since room temperature is regularly maintained; secondly, it adds a permanent structure to your home that will not sag.
One other benefit is that it gives strength to the structure of your home building. Another benefit is it reduces energy cost as you will be paying less as you consume less energy.
Since cost has just been mentioned, let us now have an idea of how much this insulation will cost. The installed cost of sprayed wall foam insulation begins from $1.25 to 2.25 per square foot. The type of foam and the thickness of your wall are two factors that affect prices when you want to do this insulation.
Although spray wall with foam insulation is considered to be quite easy, this type of insulation requires knowledge and skill for anyone to carry this out, so if you are a DIY (Do It Yourself) enthusiast without the necessary skill and knowledge you should do this by yourself.
A lot of sprayed wall foams do not contain HCFCs that can deplete the ozone layer and are, therefore, environmentally friendly. Notwithstanding this, you need to be sure of the type of chemicals to be used in doing your insulation before permitting same.
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