Spray Foam Insulation Versus Batt Insulation

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Spray foam insulation versus batt insulation.

I d blow insulation on the attic floor after air sealing of course. A poly plastic layer and sealing is needed to provide an air vapour barrier. It also takes a lot of energy to manufacture making it less environmentally friendly compared to spray foam. If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.

Now that you understand the differences between standard and spray foam insulation call today or click here for a free estimate on our services. When the engineer goes to calculate the size of the units that you need to heat and air your building they re able to size them slightly smaller because the units don t have to work so hard. An r 30 fiberglass batt performs like an r 19. It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.

The big disadvantage with spray foam is cost. For example roll insulation suitable for 2 4 wall and ceiling cavities is about 0 35 to 0 40 per square foot. Batt fiberglass has been used more extensively than spray foam throughout history and it still holds up as one of the most affordable and reliable options. You also get savings by using spray foam insulation because the liquid really seals the attic much more tightly than batt insulation.

It s hard to perfectly install fiberglass and cellulose. The average cost is around 1 per square foot. Used in roughly 85 of american homes fiberglass insulation is the most common form of home insulation. Closed cell spray foam insulation cost is 1 25 2 00 per board foot for the material diy.

Foam insulation vs standard insulations. Fiberglass insulation vs spray foam insulation comparison. Pros and cons of spray foam insulation spray foam has a number of benefits starting with the fact that it lasts longer than fiberglass insulation because it doesn t break down as easily. Any spaces and gaps that aren t filled can equate to the size of a basketball with enough air leakage everyday to fill two air blimps.

Batt insulation does not have as high of an r value compared to spray foam. It can sag and compress over time decreasing its thermal performance. An r 15 fiberglass batt actually performs like an r 9. For new builds batt insulation is the more popular choice.

Spray foam expands up to 100 times its original size to fill every corner of your home s envelope for thermal insulation and air sealing. If it gets wet r value will be decreased. Fiberglass batt insulation is priced by the roll or by the square foot. Fiberglass insulation is significantly cheaper than spray foam insulation but it is also less effective especially in extremely cold conditions.

This barrier stops air and moisture from entering one environment to the other indoors to outdoors outdoors to indoors.