Everything You Need to Know About Spray Foam Insulation

Spray foam insulation is one of the most effective ways to insulate, air-seal, and protect homes and buildings from the elements. Whether you’re insulating a new build or upgrading an existing structure, spray foam offers energy efficiency, durability, and long-term performance.

At PolyPier, we supply high-performance open-cell and closed-cell spray foam systems built for contractors who need results they can count on. In this guide, you’ll learn what spray foam is, where it’s used, and why contractors across the country are making the switch.

What Is Spray Foam Insulation?

Spray foam insulation is a two-part liquid system that’s sprayed into place where it expands, fills gaps, and cures into a durable insulating barrier. It works in hard-to-reach areas, creates an air seal, and provides long-lasting thermal protection.

PolyPier offers two types of spray foam insulation:

Open-cell foam – Softer, lighter, and ideal for interior walls and sound control.
Closed-cell foam – Dense, strong, and highly resistant to water and air infiltration.

Both types are installed by professional contractors using specialized equipment and are designed to meet the demands of residential, commercial, and industrial applications.

Why Contractors Choose Spray Foam Insulation

Spray foam insulation offers major performance advantages over traditional materials like fiberglass or cellulose. Here’s why contractors trust it:

Superior Air Sealing – Fills every gap and crack to prevent drafts and reduce energy loss.
High R-Value – Especially in closed-cell products, offering more insulation per inch.
Moisture Barrier – Closed-cell foam resists water absorption, helping prevent mold and rot.
Durable and Long-Lasting – Doesn’t sag, settle, or degrade over time.
Fast Installation – Quick cure times mean faster job turnover and minimal callbacks.
Code Compliance – Helps meet modern energy efficiency standards and building codes.

Want help choosing the right spray foam system for your next job? Contact us today →

Types of Spray Foam Insulation Available from PolyPier

Different jobs require different products. That’s why PolyPier offers a range of foam systems tailored to a contractor’s needs:

Open-Cell Spray Foam

Lightweight and flexible
Ideal for interior walls, ceilings, and soundproofing
More cost-effective per board foot
Lower R-value than closed-cell

Closed-Cell Spray Foam

Dense and rigid
Great for basements, crawl spaces, metal buildings, and pole barns
High R-value per inch
Adds structural strength and acts as a vapor barrier

Want to learn more about the differences? Read our blog:

Open-Cell vs. Closed-Cell Spray Foam

Common Applications for Spray Foam Insulation

Spray foam is used in a wide variety of residential, commercial, and specialty projects:

Residential Projects

Attics and rooflines
Wall cavities and rim joists
Crawl spaces and basements
Garages and additions
All-season rooms and sunrooms

Commercial & Industrial Uses

Warehouses and metal buildings
Retail spaces and offices
Workshops and equipment rooms
Agricultural buildings and pole barns
Shipping containers and trailers

Special Projects

Soundproofing interior walls
Protecting against condensation in steel structures
Improving energy performance in custom builds

Explore more in our blog series:

Spray Foam Installation Process

The spray foam process is fast, clean, and effective when done by trained professionals.

Prep & Planning – Evaluate insulation needs and choose the right foam system.
Surface Prep – Clear obstructions and ensure surfaces are clean and dry.
Application – Technicians apply foam using specialized spray equipment.
Curing – Foam expands and hardens in place, typically within minutes.
Finishing – Trim excess foam, inspect coverage, and seal up the project.

Looking for a Spray Foam Insulation Supplier?

If you’re a contractor ready to offer spray foam insulation—or want to level up the systems you already use—PolyPier is your partner. We provide:

✅ High-performance open- and closed-cell spray foam

✅ Expert support and product recommendations

✅ Fast, reliable service and shipping

Contact us today to learn more about our spray foam systems or request a product recommendation. We’re here to help contractors succeed in the field.