Modular home builders use concrete block or poured concrete to build foundation walls and other masonry walls. These walls need insulation strategies that each modular home builder integrate or utilize different kinds of insulation strategies.
Insulating foundation walls is more difficult than insulating framed walls; there is no convenient cavity into which insulation can fit. Therefore, here are the different types of strategies in insulating the poured concrete foundation walls.
Rigid Insulation for Poured Concrete Foundation
Rigid insulation is one of the many strategies use by modular home builders in insulating the poured concrete foundation. It is also known as the foam insulation and is more expensive than mineral wool or cellulose; however, its rigidity is a major advantage. Rigid insulation can be placed directly over a poured concrete foundation wall prior to backfilling and yields excellent insulating value. In addition, the exterior insulation will help protect waterproofing and will allow the block or concrete wall to provide thermal mass in winter and summer.
Interior Foam Insulation for Poured Concrete Foundation
Foam insulation can be installed on the interior of poured concrete foundation walls, but it must be covered with a material that resists damage and meets local fire code requirements. Half-inch drywall will typically comply, but furring strips will need to be installed as nailing surfaces. Furring strips are usually installed between sheets of foam insulation; however, to avoid the direct, uninsulated thermal bridge between the poured concrete wall and the furring strips, a continuous layer of foam should be installed underneath or on top of the nailing strips.
Interior Framed Wall Insulation for Poured Concrete Foundation
In some cases, modular home builders and designers will specify a framed wall on the interior of a masonry wall. The poured concrete wall should include provisions for both continuous insulation and careful air sealing. If a continuous insulation layer is not provided between the wall and the block, air sealing is critical. If warm moist air leaks into that area it will condense on the poured concrete wall and create conditions that promote mold growth.
In case you still have question about modular homes and insulated precast foundation, you may contact Legendary Homes Inc in Jackson, Michigan. A representative will be happy to assist you. Meanwhile you can check our modular home price sheets by signing up to our blog
Topic: Poured Concrete
Strategies Used By Modular Home Builders In Insulating the Poured Concrete Foundation
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