Insulation & Air Sealing in Tualatin, OR

Insulation without air sealing is like wearing a warm coat full of holes. Tualatin’s housing stock is comparatively young for the Portland metro area, with a median construction year of 1991 according to the Oregon Housing Project, but newer construction doesn’t automatically mean a tight building envelope. Builder-grade insulation and sealing from that era often falls short of what current energy codes require, and gaps show up in the same places regardless of when a house was framed.

What that means day to day: rooms that never quite match the thermostat, drafts around windows and doors, and a heating system working harder than it should in a climate with cool, damp winters. Adding insulation without addressing air sealing underneath it rarely solves the problem on its own. We treat the two as one job because that’s how building science works.