The Efficiency and Conservation Benefits of Additional Insulation
Insulation keeps your home warm in the winter and cool in the summer. Its performance is measured by R-value — the ability to resist heat flow. Higher R-values mean more insulating power. Insulation works best when air is not moving through or around it. It is very important to seal air leaks before installing insulation to ensure the best performance from the insulation. To get the biggest savings, the easiest place to add insulation is usually in the attic. 25% – 35% of a home’s heat escapes through the roof. A quick way to see if a home needs more insulation is to look across the uncovered attic floor. If the insulation is level with or below the attic floor joists, more insulation is probably needed. Additionally, after a heavy snow, if the snow is melting in the center of a home’s roof or in patterns that mirror the rafters, the house may be losing large amounts of heat through the roof. There are several common types of insulation:
- Fiberglass batts are commonly used in-between studs or rafters when they are exposed in new construction or during a major remodel. They are also often found under the floor in a crawl space.
- Blown-in cellulose insulation is commonly used when adding insulation to an existing home’s attic or walls. Or, under a manufactured home, in the “belly”.
- Rigid foam board is used when insulating concrete slabs, cathedral ceilings, basement walls, and flat roofs.
- Spray foam is sprayed into small tight areas. It then expands to form an air-tight seal.
REQUIRED FORM – Jefferson PUD Weatherization Form
Please note that your home MUST be electrically heated in order to be eligible for a rebate. Please use a contractor from our list of participating contractors. All contractors must be licensed an bonded. See application for details.
RESIDENTIAL WEATHERIZATION/INSULATION PROGRAM REQUIREMENTS:
Insulation measures must be installed according to the Bonneville Power Administration (BPA) Weatherization Specifications. Below are the minimum criteria for rebate eligibility for insulation:
(Below is a list of insulation upgrade options, all options are too numerous to list here. If you have a specific insulation upgrade in mind not listed below, contact Bill Graham at firstname.lastname@example.org or call (360) 385-8375.
- Existing insulation R-0 to R-7 can be increased to R-38, or R-49 @ $0.65 per square foot.
- Existing insulation R-8 to R-11 can be increased to R-38, or R-49 @ $0.25 per square foot.
- Existing insulation R-12 to R-19 can be increased to R-38, or R-49 @ $0.10 per square foot.
Existing insulation R-0 can be increased to R-11+ @ $0.65 per square foot.
- Existing insulation ≤ R-11 can be increased to R-19 or R-21 @ $0.25 per square foot.
- Existing insulation ≤ R-11 can be increased to R-25 or R-30 @ $0.30 per square foot.
Existing insulation < R-11 can be increased to R-22+ @ $0.30 per square foot.