ProHOME Foundation in Pictures
The foundation of the ProHOME project in Rhode Island was designed and built with performance and water management in mind. You can read more about the theory and logic behind its design here. Builder Mike Guertin and his small crew does all of the foundation work themselves. This drove their product selection and the details of the foundation’s assembly to ensure a solid base for the framing to come.
Here’s a glimpse at its construction from earlier this summer.
Parts of the foundation will be treated as a frost protected shallow foundation, which minimizes the depth in which the footings need to be placed. In order to prevent frost heaving, the outside face of the footing is insulated with rigid foam. In colder parts of the country an additional wing of rigid foam would need to be placed perpendicular to the footing. That’s not necessary in the climate of Rhode Island.
Protecto Wrap Liquid Waterproofing Membrane is applied to the top of the footing. This is to keep moisture from traveling up through the footings and into the foundation walls—a process sometimes referred to as rising damp. This liquid-applied membrane will help keep the foundation walls dry, which will help prevent the excessive moisture that can build up in the basement and lead to comfort and mold issues.
Aluminum channel is pinned to the footings and will help keep the Insulated Concrete Forms in position as they’re installed. The particular area in this image will be supporting the front entry of the home, and so the waterproofing membrane is unnecessary.
The Amvic Plus 3.0 blocks are stacked like Legos. They can be cut with ordinary carpentry tools, making them a viable alternative to formed walls for most builders.
Amvic SilveRboard EPS rigid foam is used to insulate the basement slab.
A helper precuts sheets of Protecto Universal Primer Free Membrane.
SUPERSEAL dimple foundation membrane is installed over the Protecto Universal Primer Free Membrane. The dimple mat protects the underlying membrane from damage during backfilling and offers an additional layer of protection against water. Once the home’s first floor is framed, the foundation will be backfilled.