11 Insulation – Preview
Spray Polyurethane Foam (SPF) Insulation
There are two types of SPF Insulation: closed cell and open cell. Closed cell SPF, while more expensive, has a higher R-value (resistance to heat flow) and qualifies as an air barrier. Both types of SPF are applied to the stud cavities and resist air flow better than traditional batts. The thickness of SPF may vary depending on the type of SPF, stud thickness, and your strategy.
1. Once the rough plumbing, heating, AC, ventilation, lighting and electrical work has been completed, check with your municipality to see if a rough inspection is required. Once this is approved, the insulation phase may begin.
2. Confirm your selections are completed for all locations to be insulated. Conduct a thorough “walk-thru” with your insulation contractor and confirm the type of insulation you selected for all parts of the thermal envelope.
3. Identify vulnerable conditions such as cantilevered floors, unvented rafter cavities, and eaves with minimal heel heights. Review the best strategy to insulate these areas.