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Wife and husband team, Jodi and Chris Laumer-Giddens, run LG Squared, a residential architecture, design and consulting firm specializing in high-performance and off-grid building. From historic renovations to contemporary new builds, LG Squared has developed a reputation for high-performance homebuilding, off-grid designs, and super-insulated homes in hot/humid climates and wildland urban interface (WUI) zones. As a frequent co-host of our exclusive R‑Class Roundtable, Chris brings his extensive building science knowledge and experience working with ROCKWOOL to our monthly webinars.

Jason Mollak, owner of JPM construction based in Omaha, Nebraska, is currently acting as general contractor on his fourth custom home build. Jason started as a carpenter at 18 and moved into remodeling and additions, honing his skills as a finish carpenter. His attention to detail in educating the homebuilding community is evident on his social media platforms. Keep up with Jason’s current build on the Fine Homebuilding House 2021 Nebraska.

Toronto carpenter and custom homebuilder Jeff Harvey leads one of the city’s best custom framing crews. His company, Harvey Homes & Interiors, focuses on a transparent building process, quality craftsmanship and developing highly skilled tradespeople. Named “One to Watch” by BUILD magazine, Harvey Homes & Interiors has been featured on HGTV’s Property Brothers and Forever Home.

General contractor Matt Risinger is one of the highest-profile custom builders in the US — and he’s earned it. An expert in building science and high-performance homebuilding, Matt and his team have been a driving force in elevating the standards of the building industry by educating builders through The Build Show Network, live events and multiple digital platforms including YouTube and Instagram.

An energy auditor who comes from a family of builders, Randy Williams has shared his expertise as a contributing writer for Fine Homebuilding magazine and as a consultant for power companies and the building community through the Midwest Building Symposium. Randy primarily works with homeowners and fellow builders on existing homes, conducting energy audits and blower door tests. Randy shares his insight each month as a part of the ROCKWOOL R‑Class Webinar series.

Based out of Prarie Village, Kansas, Travis Brungardt and Joe Cook are well-known in the high-performance building community. They take every detail of the build into consideration, carefully managing resources to minimize the impact on the environment. Their passion for sharing what they’ve learned with other builders led them to co-found the Kansas City BS + Beer group and the Midwest Building Symposium. You can also catch these two each month on the ROCKWOOL R‑Class Webinar series.

Boston builder Nick Schiffer combines his attention to detail with a passion for building. He turned his carpentry company into a premier homebuilding, renovation, custom cabinet millwork and media enterprise. As co-founder of “The Modern Craftsman Podcast,” host of the “NS Builders Podcast” and with a successful YouTube series, “Crafted by NS Builders,” he offers resources for builders and homeowners. And with a philosophy built on total transparency, has earned the trust of clients.