Item ID: 266
Biobased Window Foam
Window Frame Insulation: Bio-based Foam vs. Hollow Frame
Foams made from agricultural products that can be blown into hollow vinyl window frames.
Bio-window foams help retain interior temperatures when they are injected into vinyl window frames. This reduces the energy consumption for heating and cooling. The product is claimed to improve the thermal efficiency of windows by three to eight percent more than window frames without foam and comes with excellent flame-retardant properties.
WFI Global makes a low density insulated foam that can be injected by window fabricators into vinyl and fiberglass window frame cavities (not between the glazing layers). Their product--U-Core+--is touted as improving window thermal performance by up to 8%. U-Core+ contains just over 19% bio-based content (polyol) and is certified by the USDA BioPreferred Program. This program is designed to provide new markets for farm commodities (Kavanaugh, 2014). Soy Seal, a line of soy-based insulating foams, is available in a spray can with this closed-cell foam used for sealing gaps and cracks. They can also be used in structural insulated panels.
It is unlikely that a bio-based window foam will provide heat-loss benefits over that obtained from using conventional polyurethane spray foam insulation. Spray foam for vinyl window use is not a retrofit technology; this is a feature that must be sprayed into hollow window frame components (head, sills etc) by the manufacturer. Bio-based window foams (and polyurethane foams) are also being advertised as an alternative to convention fiberglass and cellulose insulation used for residential attic and wall insulation as they provide both sealing against infiltration plus a high R-value.
Energy Savings: 5%
Energy Savings Rating:
Not rated. What's this?
|1||Concept not validated||Claims of energy savings may not be credible due to lack of documentation or validation by unbiased experts.|
|2||Concept validated:||An unbiased expert has validated efficiency concepts through technical review and calculations based on engineering principles.|
|3||Limited assessment||An unbiased expert has measured technology characteristics and factors of energy use through one or more tests in typical applications with a clear baseline. |
|4||Extensive assessment||Additional testing in relevant applications and environments has increased knowledge of performance across a broad range of products, applications, and system conditions. |
|5||Comprehensive analysis||Results of lab and field tests have been used to develop methods for reliable prediction of performance across the range of intended applications.|
|6||Approved measure||Protocols for technology application are established and approved.|