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Then, the rest of the framing cavity is insulated with blow-in insulation or fiberglass or mineral wool batts. Typically, this is between one and two inches for all but the coldest climates. Spray foam thickness is best determined based on what’s needed to achieve an air-barrier, any required water vapor or condensation control, and thermal performance targets. In a hybrid solution, spray foam is usually installed to the minimum thickness needed to minimize cost. Hybrid solutions are beneficial because they allow each material to do what it does best, while avoiding or minimizing potential pitfalls and excessive costs. A solution of combining spray foam as an air sealant with fiberglass batts installed in the interior wall cavities proved cost-effective and enabled a faster installation while helping the building owner reach energy efficiency goals within budget.
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#Johns manville thermal and sound control insulation install
Spray foam + fiberglass or mineral wool batts or rollsįor example, a recent project pursued a hybrid solution to meet the defined project goals of delivering energy efficient results, maximizing budgets and reducing install time. The most common hybrid insulation solutions combine spray polyurethane foam and fiberglass, or mineral wool within a framing cavity. Two or more products create hybrid solutions aimed at creating a stronger building envelope and offering significant benefits, including thermal and moisture protection, maximized air-sealing and increased privacy throughout the space. Hybrid solutions can help meet these specific goals and considerations, working to the advantage of building owners and facility managers.
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During this process, it’s important to consider the building’s age, size, location, climate and current building codes. When building or renovating a structure, selecting insulation is a key step in achieving goals for energy efficiency and occupant comfort.
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