Calgary Spray Foam – Importance of R-Value and Building Envelope in Insulation

Calgary spray foam is the most sought after insulation material in the world today. This is because of the many benefits it offers. However, before you consider installing it, it is imperative that you understand two things: R-value and building envelope. SPF is quite effective in insulation but if you don’t cover these two things, the results will not be as good as you would want them to.

R-value
The R-value is the ability of a material to resist heat transfer. This is important considering conduction is one of the main causes of heat loss in a building. The good news is that spray foam Calgary has a high R-value. Closed-cell SPF has an R-value of more than 6.0 per inch of thickness whereas open cell has an R-value of more than 3.5 per inch of thickness. This is much better than the likes of fiberglass which rests at 3.0 per inch of thickness. Having a high R-value means you don’t need to apply too many layers to achieve a desired R-value. This is the main reason why polyurethane Calgary is preferred for insulation in tight spaces.

Needless to say, the higher the R-value, the better the thermal resistance will be. There are varying requirements on R-value in different building codes. The required R-value will depend on a number of factors among them your climate, type of HVAC you use, your budget, part of the house being insulated, importance of indoor air quality, lifecycle and type of SPF being used.

Building envelope
Another important thing you will have to understand is the building environment. This is not an easy thing to do. You need to work with spray foam contractors Calgary if you want the best results. The fact you need to understand is that a building’s envelope is as strong as its weakest link. This is a point you have to keep in mind when investing in insulation; Calgary spray foam included. During insulation, the installer has to make sure that every part of the house is covered. The tiniest of spaces in the building envelope will lead to heat loss/gain. This will make the investment in SPF inefficient.

These two facts have to be understood before you install SPF. Another thing you should never ignore is the heat capacity of the material you plan on using. How will it perform during summer or in the hot climates? You should also consider the transpiration and the density of the product you use. Needless to say, although closed-cell spray foam Calgary offers better results in insulation, it is not always the best one to use. There are various factors that the installer will look at before determining the best material to use.

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