Spray Foam Insulation in Sterling Heights, MI

Spray foam insulation in Sterling Heights goes into a city that was farmland not long ago. Wikipedia notes that Sterling Township was agricultural, largely growing rhubarb for Detroit markets, until the 1950s. In the 1960s and 1970s many residents moved in to work at nearby auto plants. Today it has 134,346 residents, the fourth-largest city in Michigan.

Homes from the growth years

Houses from the 1960s and 1970s were built with some insulation, but a typical attic from that era has well under today's targets, and it has often been disturbed by decades of cable, fan and lighting work. Rim joists are usually bare or have loose batts. Many homes have rooms over attached garages or cantilevered floors.

Our usual plan

Seal the attic floor and blow it to depth. Foam the rim joist with closed-cell. Foam the floor over the garage if there is a room above it. If the basement is going to be finished, foam the walls first.

Code and climate

Macomb County is in Climate Zone 5A in Michigan's energy code. The Department of Energy suggests adding R-49 over 3 to 4 inches of existing attic insulation in Zone 5. The Clinton River crosses the northeast part of the city, and homes near it should be checked for basement dampness before insulating.

Split-levels and tri-levels

The 1960s and 1970s produced plenty of split-level homes. They have attic sections at different heights, a garage under or beside a bedroom, and rim joists at more than one level. Each level needs its own look, and the floor over the garage is often the coldest spot in the house. Closed-cell foam handles both the garage ceiling and the extra rim joists.

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