Case Study: Isola Homes achieves code-exceeding energy efficiency with Aeroseal AeroBarrier

Isola Homes cuts air leakage from 9.28 ACH50 to 1.49 ACH with Aeroseal

Isola Homes, a Seattle-area builder, needed a cost-effective way to reduce energy consumption by 20% across its townhome projects to achieve a four-star Built Green rating. Their challenge was an inconsistent manual air sealing process using caulk, which was often forgotten by drywall contractors and led to failed blower door tests, delaying home handovers.

The solution was implemented by Aeroseal using its AeroBarrier air sealing technology. This process allowed Isola Homes to reliably dial in a specific building tightness, eliminating the manual sealing step. The results were dramatic, with leakage reduced from an average of 9.28 ACH to 1.49 ACH per unit. This made passing the blower door test a non-issue, streamlined construction, and allowed the builder to market the added comfort, sound dampening, and energy efficiency of its Aerosealed homes.

Isola Homes