Unlocking the potential for safe energy retrofits over inaccessible crawlspaces
Overview
This project will convene a field study to test the application of AeroBarrier in crawlspaces that are too constricted for human entry. The work aims to answer whether an AeroBarrier seal deployed at the ceiling of these types of crawlspaces can allow these previously off-limit properties to benefit from energy retrofits and weatherization programs by controlling the ingress of moisture and radon into the home. Currently, there are over 1,000 houses in Minnesota that are not able to process with energy improvements from the Low Income Weatherization Program because they do not comply with crawlspace treatment guidelines.
The project will monitor indoor air quality to determine how it is affected by these efforts. Energy use will be tracked to determine the overall energy savings potential of this technique and housing segment. Implementation costs will also be tracked to determine the cost-effectiveness of this approach.
Project Summary
Objective
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Demonstrate the use of AeroBarrier technology in crawlspaces that are too constricted for conventional ground sheets and air sealing techniques.
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Test the effectiveness and durability of the AeroBarrier seal for controlling the ingress of radon, moisture, and other pollutants from the crawlspace into the house.
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Provide weatherization agencies with a cost-effective means to remove these homes from their deferred list and safely perform weatherization services.
Scope
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Monitor application of this air sealing technique in roughly a dozen existing homes with inaccessible crawlspaces.
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Determine the energy savings obtained by air sealing these crawlspaces and the additional carbon and energy savings enabled by a full energy retrofit of the enclosure.
Non-energy benefits
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Prove that additional above-grade insulation and air sealing does not negatively impact air quality inside the home.
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Demonstrate the cost-effectiveness of this technique on homes with unsealed, inaccessible crawlspaces, typically found in rural areas where energy burdens are high and access to new technology is low.