Power Plant Roof Repair, Eareckson AS, Shemya, Alaska

Eareckson Air Station (EAS) is located on Shemya Island, a windswept island at the western end of the Aleutian Island chain, ~1,500 air miles southwest of Anchorage, Alaska. Fog, blowing rain and/or snow with temperatures ranging from 20 to 40 degrees are common throughout the year. These conditions often contribute to the rapid deterioration of most building materials and facilities.

The EAS power plant consists of a 120’ x 126’ original metal building and a 120’ x 60’ addition. A recent windstorm damaged the roof, its failure partly due to the lack of a vapor barrier and proper eave to prevent water infiltration and degradation. Brice designed a new roof for the power plant building addition consisting of a surface-mounted steel roof with foam insulation applied from the exterior to the inner steel sheathing. We demolished approximately 8,000 sf of existing roofing including wooden boards on top of purlins, plywood, and fiberglass insulation. We then applied spray foam insulation on the inside of the affected roof repair and replaced the wooden boards with new metal angles attached to the side of the purlins and new surface-mounted roofing, generator vents. To complete the work, we installed eave flashing to prevent water infiltration and complete the water tight envelope on the roof.

Brice successfully completed the project ahead of time and within budget. Through our proactive approach, we avoided delays and interruptions to the power plant operations and delivered a product with the added protection needed to avoid roof loss during any subsequent storms.