A Smart Basement Insulation Solution After the Marshall Floods

Recently, Marshall, MN experienced heavy flooding that left many homeowners with the difficult task of remodeling and protecting their basements. After a major water event, insulation choices matter more than ever—not just for comfort and energy efficiency, but also for preventing future water damage.

One of our clients in Marshall reached out with an unusual request: could we insulate only the lower 2.5 feet of his basement walls with spray foam? At first, this sounded like an odd project. Most basement insulation jobs involve full wall coverage. But when we went to take a look, we discovered something innovative.

Treated Plywood + Closed Cell Spray Foam = Extra Basement Protection

The homeowner had a treated plywood basement wall system. He explained that in a previous home, he had used closed cell spray foam insulation on the lower part of his basement walls. This acted as a protective barrier, sealing out water during wet years and floods.

Closed cell spray foam has unique properties that make it a great option for basements in flood-prone areas like Marshall:

• Water resistance: Closed cell foam doesn’t absorb water like fiberglass or cellulose insulation.

• Air sealing: It creates a tight barrier that helps keep moisture and humidity from seeping into the basement.

• Durability: It bonds directly to surfaces, adding structural strength and lasting performance.

• Mold prevention: By reducing moisture penetration, it helps stop mold and mildew from forming behind walls.

A Practical Solution for Flood-Prone Basements

After inspecting the basement, we agreed that insulating just the lower 2.5 feet with closed cell spray foam was not only practical but also a smart preventative measure. In case of future flooding, the most vulnerable part of the wall will now be sealed and protected.

This innovative approach is something we’ll be recommending to other customers in Marshall and surrounding Minnesota communities who are concerned about water intrusion in their basements.

Protect Your Basement with Spray Foam Insulation

If your basement was affected by the recent Marshall floods—or if you want to take preventative steps before the next heavy rain—closed cell spray foam insulation could be the right choice. Whether you’re remodeling, finishing a basement, or just looking to safeguard against water damage, spray foam offers peace of mind along with long-term energy savings.

📞 Contact us today at 507-829-3558 to schedule an inspection or get a free estimate for your basement insulation project in Marshall, MN and the surrounding areas.