Source Mountain Supply, LLC.

Source Mountain Supply, LLC. Source Mountain Supply delivers the insulation and packaging materials you need—without the big box markup. Powering Construction. Protecting Products.

From EPS and Polyiso to protective solutions, we help you build smarter and ship safer. Source Mountain Supply, LLC sells and ships foam packaging supplies, custom foam products, and stretch wrap out of West Bend, WI.

08/28/2026

Building a slab? We can supply 25 PSI EPS insulation, v***r barrier, and seam tape—with quantity pricing and delivery available. One local source, less jobsite downtime. Message Paul for pricing.

The right foam protects your product and improves packing efficiency. We supply custom EPS and EPE protective packaging,...
08/25/2026

The right foam protects your product and improves packing efficiency. We supply custom EPS and EPE protective packaging, including CNC-cut profiles and pads sized for your application. Send us your part or packaging requirements for a quote.

08/22/2026

Commercial roofing contractors: send us your plans for EPS, polyiso, tapered insulation systems, or flute fill. We provide responsive quoting, custom solutions, and dependable Wisconsin delivery.

We’ve Got You Covered in Insulation—Not Buried in Costs!
08/21/2026

We’ve Got You Covered in Insulation—Not Buried in Costs!

Stop making multiple supply runs for one slab. Get 25 PSI EPS insulation, v***r barrier, and seam tape delivered togethe...
08/19/2026

Stop making multiple supply runs for one slab. Get 25 PSI EPS insulation, v***r barrier, and seam tape delivered together to your Wisconsin jobsite. Ask about contractor quantity pricing and local delivery.

From roofing to under-slab insulation, Source Mountain Supply has you covered! Give Paul a call—we deliver.📞 920-382-038...
08/19/2026

From roofing to under-slab insulation, Source Mountain Supply has you covered! Give Paul a call—we deliver.
📞 920-382-0382

🏗️ Why Use a V***r Barrier Under Concrete?Concrete may look solid, but moisture v***r can still move up through a slab f...
08/06/2026

🏗️ Why Use a V***r Barrier Under Concrete?

Concrete may look solid, but moisture v***r can still move up through a slab from the soil below. Over time, that moisture can contribute to:

• Damp or musty spaces
• Flooring and adhesive failures
• Mold and mildew concerns
• Increased indoor humidity
• Damage to stored materials and finished surfaces

A properly installed under-slab v***r barrier helps separate the concrete from ground moisture and protects the building long after the concrete is poured.

Source Mountain Supply now has access to StegoHome 10 Mil V***r Barrier in 12' × 75' rolls. It’s a durable option for residential slabs, basements, garages, additions, and other under-concrete applications.

For the best results, overlap and tape the seams, seal around penetrations, and repair any punctures before placing the concrete.

Need v***r barrier, insulation, or sealing tape for an upcoming pour? Contact Source Mountain Supply for pricing and availability.

📞 920-382-0382
🌐 www.sourcemountain.com

08/03/2026

🩺 EPS or XPS—which one does your project need?

Dr. Insulation’s answer: It depends!

EPS offers excellent value and is available in multiple densities, thicknesses and compressive strengths for roofing, under-slab, foundation and wall applications.

XPS has a dense, closed-cell structure with strong moisture resistance. Our 2" Kingspan XPS provides:

✅ R-10
✅ 25 PSI compressive strength
✅ Great for under-slab, foundations and below-grade applications

We don’t play foam favorites—we’re insulation suppliers, not referees!

Tell us your application, required R-value and PSI, and we’ll help you choose the right product.

Source Mountain Supply
📞 920-382-0382
🌐 sourcemountain.com

💧 Myth or Fact?"EPS insulation soaks up water."Not exactly.Like many building materials, EPS needs to be used in the cor...
07/20/2026

💧 Myth or Fact?

"EPS insulation soaks up water."

Not exactly.

Like many building materials, EPS needs to be used in the correct application. Roofing EPS is typically manufactured at about 1 lb density, while below-grade EPS is usually 2 lb density or greater, making it much denser and designed for foundation and under-slab applications.

Modern EPS has been used successfully under concrete slabs, foundations, roadways, and commercial buildings for decades. The key is choosing the proper density and compressive strength for the project.

Don't let common myths keep you from considering one of the most cost-effective insulation options available.

At Source Mountain Supply, we help contractors choose the right insulation—not just sell foam.

Did you know?Rigid insulation is tested using standardized ASTM methods, but manufacturers may report R-values at differ...
07/17/2026

Did you know?

Rigid insulation is tested using standardized ASTM methods, but manufacturers may report R-values at different mean temperatures.

That means two products with the same published R-value may not have been tested under the same conditions.

In general:

EPS thermal performance increases as temperatures get colder.
Polyiso thermal performance decreases as temperatures get colder.
XPS remains relatively stable over a wide temperature range.

Before comparing insulation products, ask one simple question:

"At what mean temperature was the R-value measured?"

It's an important detail that can make a significant difference when selecting insulation for a project—especially in colder climates like Wisconsin.

Address

929 N River Road
West Bend, WI
53090

Opening Hours

Monday 7am - 5pm
Tuesday 7am - 5pm
Wednesday 7am - 5pm
Thursday 7am - 5pm
Friday 7am - 5pm
Saturday 9am - 12pm

Telephone

+19202740592

Website

Alerts

Be the first to know and let us send you an email when Source Mountain Supply, LLC. posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Source Mountain Supply, LLC.:

Shortcuts

Share