Attic & Crawl Space Insulation in Bismarck, ND

Piling more blown-in on an attic floor is the default fix, but if the ceiling plane isn't sealed first — around can lights, plumbing stacks, the access hatch, and top plates — heated indoor air rides those gaps straight up into the insulation, melts the snowpack, and refreezes at the eaves as an ice dam. With Bismarck logging around 50 inches of snow a season and a furnace running into April, that's a yearly complaint in the city's older, draftier attics.

Leave a crawl space vented to a Dakota winter and you've basically parked January right under the living-room floor: chilly floorboards, a fatter gas bill, and pipes one cold snap from bursting. Sealing and foaming the stem walls and rim joists with closed-cell holds the crawl and its plumbing at a steady temperature and dries out the musty, damp air that hangs in most older crawls around here.