What is Polyurethane Foam? A High-Performance Thermal Insulation and Airtight Sealing Solution.
Polyurethane foam is a thermal insulation material formed by a two-component chemical reaction, possessing extremely low thermal conductivity and strong adhesion properties. Available in spray or panel form, polyurethane foam offers ideal solutions for achieving energy efficiency in both residential and industrial buildings.
How is polyurethane foam produced?
Polyurethane foam is an insulation material with a cellular structure formed by mixing two main components called isocyanate and polyol. When applied to a surface, the mixture expands, fills voids, adheres, and forms a monolithic insulation layer.
Where is polyurethane foam used?
Polyurethane foam can be used in many areas with its different forms and application methods:
- Roof and facade insulation
- Cold storage facilities and refrigerated areas
- Ground and foundation insulation
- Warehouse and silo insulation
- Agricultural structures (barns, greenhouses)
- For sealing purposes on metal, wood, and concrete surfaces.
- Insulation of door, window and panel joints (aerosol spray foam) Advantages of Polyurethane Foam ✔ One of the Lowest Thermal Conductivity Values
Advantages of Polyurethane Foam
- Seamless and Gap-Free Application: When applied in spray form, it covers the entire surface as a single piece, preventing the formation of thermal bridges.
- Lightweight and Durable: It does not add load to the structure. It is long-lasting and does not sag or shrink over time.
- Excellent Adhesion: Can be applied directly to many surfaces such as metal, concrete, wood, and stone. No extra adhesive is needed.
- One of the Lowest Thermal Conductivity Values: Polyurethane foam has a thermal conductivity coefficient (λ) in the range of 0.020 – 0.028 W/mK. This makes it one of the best thermal insulation materials on the market.
- Provides complete sealing against air, vapor, and water. Resistant to moisture and prevents mold growth.
- Fire-resistant options include B2 and B1 class (flame retardant) polyurethane foam types.
Why Choose Polyurethane Foam?
✅ Maximizes energy savings
✅ Long-lasting and maintenance-free
✅ Easy to apply on detailed surfaces and sloped areas
✅ Dries quickly, reducing labor time
✅ Provides both insulation and sealing
Frequently Asked Questions (FAQ)
Is polyurethane foam waterproof?
Thanks to its closed-cell structure, it is waterproof. It is frequently preferred in flooring, roofing, and facade applications.
How long does polyurethane foam take to dry?
Spray form typically hardens on the surface within 1-5 minutes. Full drying takes place within 24 hours.
Is there fire-resistant polyurethane foam?
Yes. Class B1 (flame-retardant) polyurethane foams can be used in areas with a risk of fire.
Can painting be done after application?
Yes. Once dried, the foam can be sanded and then primed and painted.