Q: What does R Value mean?

A: R Value is the insulation’s resistance to heat flow. It’s also known as “thermal resistance”. The higher the R Value, the better the insulating power.

Q: When, during construction, should spray polyurethane insulation be applied?

A: Spray polyurethane insulation installed after the rough plumbing, electrical wiring, and heating and air conditioning ducts have been installed. In some cases, spray insulation may need to be applied to some areas before the ductwork is installed – especially if you decide to seal the entire exterior shell with spray polyurethane.

Q. How dangerous are the fumes from spray foam?

A. Spray foam is not certified as a hazardous material, though the fumes aren’t healthy to breath in while installing – hence the requirement to wear a N.I.O.S.H. certified mask. However, ample ventilation and fume removal is provided during installation and the foam cures within 4 hours.

Q. Does cellulose retain a lot of moisture?

A. Cellulose is similar to a paper towel when encountering moisture. It absorbs moisture; but when held up in the air, it dries pretty quickly, depending on your home’s ventilation and moisture environment.

Q. What kind of fire protection do I need for Spray Foam or Cellulose?

Spray foam typically has an ignition barrier provided in it’s mixture, meaning you don’t need anything covering it in non-livable spaces (attics or basements).  Otherwise, adding a fire rated substance such as sheetrock or fire proof paint is necessary. Cellulose has borate and is fire rated by itself, so there’s no additional protection necessary.