In the world of spray foam you almost always get what you pay for.
Receiving proposals for properly foaming the attic roof-line is nothing like getting bids on blowing cellulose on the attic floor or installing fiberglass insulation. Foaming the attic alters the chemistry of the entire home and has a direct impact on its pressure boundaries, the operation of the central HVAC system, water vapor characteristics, heat loads, etc. A homeowner simply getting a quick foam bid from a foam sales person or contractor who is not trained, certified and experienced in Building Science may be taking a big risk of permanently damaging the home or the health of the occupants. When receiving an all-inclusive detailed proposal from EnviroGreen Energy Solutions answers to the concerns on the list below are always addressed.
When creating a sealed foamed attic points of interest are:
- Attic ventilation.
- The proper amount of inches and R-value necessary according to Building Science Principles along with residential building code and energy code.
- Insulation currently on the attic ceiling floor and how to handle it.
- Type of heating system in the attic and how to address open combustion furnaces.
- Mechanical bathroom vents and disposing of the moisture properly.
- Fireplace structure in the attic.
- Dehumidification of sealed attic.
- Type of roof sheathing material.
- Condition of gable walls.
- Overhangs, porches, soffits, and attached garages.
These areas of concern must be taken into consideration when receiving a proposal to foam-seal the attic. If any of these principles are not addressed properly then the enclosed foamed attic may prove to be a liability and, even worse, a major health & safety issue. Be skeptical of foam contractors who do not address these concerns, offer to beat anybody’s price, or offers a “99 cents per square foot deal.” In the world of spray foam you almost always get what you pay for.