The Risinger Build: Episode 4 - Existing Slab Retrofit & New Foundation

Watch as we dive into the essential steps of constructing a high-performance home, starting with the foundation phase. In this episode, Matt kicks things off by revisiting the project site, now in the midst of the foundation phase. Our concrete expert has taken charge, transforming the site with fresh rebar installations and vapor barriers. Despite a wet, muddy day, significant progress has been made since the last episode. The focus today is on the importance of a robust vapor barrier, with insights from our Stego representative, Tom. We discuss how this green layer isolates the home from ground moisture.

Matt and his termite expert, Joel, discuss an innovative approach to termite prevention using a stainless steel mesh called Termite Mesh. Unlike traditional chemical treatments, which need to be reapplied every 5 to 10 years, this durable mesh creates a physical barrier that termites cannot penetrate. Joel explains that this product, originally from Australia, has been successfully used in the U.S. since 2000. It's embedded in concrete slabs to provide a long-lasting, non-toxic solution to termite infestations. Matt emphasizes the importance of visible concrete around foundations to prevent hidden termite tunnels, which can cause significant damage.

Next, Matt introduces Witt from Smith Structural Engineering to inspect the site before the slab pour. Wade explains the concept of a stiffened slab-on-grade foundation, which is common in areas without frost concerns. This type of foundation integrates grade beams and a monolithic slab to create a solid base for the structure. They discuss the use of fiberglass rebar (GFRP) as an alternative to traditional steel rebar. This rebar is lightweight, corrosion-resistant, and has a higher tensile strength, making it ideal for harsh environments and easy to handle on-site.

With all the pieces finally in place, Matt wraps up the episode with a fresh slab!

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