Spray Foam Insulation- In Older Homes Part 2/3

Spray foam icynene insulation being applied in a 1930's home in California.
The video shows the trimming of excess insulation with a sawzall and special blade.

Category:

Education

Tags:

• Green building
• air sealing
• hers 1
• hers 2
• wall framing
• stud cavity
• energy star
• most efficient insulation
• spray foam
• fiberglass
• blown cellulose
• blown fiberglass
• build it green
• stack effect
• old wall framing
• trimming spray foam
• trimming
• icynene

[8906cwf]

@HomeEnergyNow hmm i dont see how you think it doesnt have good R value... it has an R value of R-7 per inch (close cell) and stops all air from passing through which is a huge heat loss fiberglass has an R value of 11 for 3''... that would be a R-21 if it was foam, and no air would make it through, i agree with the ceiling though. it should not be sprayed on it, blown cellulos or blown fiberglass is better for that purpose.

[moviesforrandy]

how much does it cost per 10ft x 8ft x 4in. trying to get an ideal how much it will cost to do my old home.

[HomeEnergyNow]

@MrD1etzz "In reality there is very little product actually wasted." Dumpsters full bud, I have also seen foam cut off filled clear plastic bag mountains at the landfill. Compared with the popular choices for insulation, it is by far the most wastefull product. Look into it, the most production waste, the worst performance (loose fills go to R-60), the most job site waste. It is all around the EXACT OPPOSITE of "green" Non biodegradeable petroleum product high cost low performance.

[HomeEnergyNow]

@MrD1etzz I take it you dont have any home energy licensing or knowledge? Spray foam is half the R value in the ceiling as the popular insulations, and it has the same wall R-value at much higher costs,so as an insulator it is overall INFERIOR. Insulation as a sealant?Every wall has two air barriers, try to seal the existing air barriers properly rediculous to think you need a third barrier.Try to calculate btu gains/losses in a home, trust me, of the big three, foam performs the worst

[MrD1etzz]

@HomeEnergyNow The point of it is that it reduces environmental impact by providing a very good insulator so the home keeps in all of its produced heat rather than just letting it blow out. The savings in this type of material is in labor hours and in the saving of fossil fuels that run heating units in homes. The reason why you see "so much" wasted product is because it expands when applied, that is why this method is so good. In reality there is very little product actually wasted.

[HomeEnergyNow]

How many barrels of oil are swept up bagged and thrown away after these jobs to never decompose in a dump somewhere? I see our insulation distributers dumpsters packed with this stuff all the time. That looks like@ 30% of the material. Doesn't seem too "green" at all.

[MsHotstuff2000]

hi guys can you give me any info on the blade you are using can not get them here in aus thanks mark