Insulation Board 4X8 | Board Insulation Foam | Foam Board

Premium 4x8 Insulation Boards for Superior Energy Efficiency

At Roofing4US, we offer a curated selection of 4x8 insulation boards designed to meet diverse construction needs. Whether you're a contractor working on a large-scale project or a homeowner undertaking a renovation, our range ensures optimal thermal performance, moisture resistance, and structural integrity.​

Explore Our Diverse Insulation Board Types

1. Polyisocyanurate (Polyiso) Boards

Known for their high R-value per inch, Polyiso boards are ideal for projects requiring excellent thermal resistance. They are lightweight, easy to handle, and suitable for various applications, including roofing and wall insulation.​

Top Picks:

• Atlas EnergyShield Series: Offers foil-faced options for enhanced thermal performance.
• Rmax Thermasheath: Versatile boards suitable for residential and commercial buildings.

• Hunter Xci Panels: Designed for continuous insulation applications.​

   

2. Extruded Polystyrene (XPS) Boards

XPS boards provide consistent thermal performance and moisture resistance. Their closed-cell structure makes them suitable for below-grade applications and areas exposed to moisture.​

Top Picks:

• Owens Corning FOAMULAR 250: Known for its durability and high compressive strength.

• Dupont XPS 150/250: Offers reliable insulation for foundation walls and slabs.​

   

3. Phenolic Foam Boards

Phenolic boards, such as Kingspan's Kooltherm series, deliver exceptional thermal performance with a thinner profile. They are ideal for projects where space is limited but high insulation is required.​

Top Picks:

• Kingspan Kooltherm K12: Suitable for wall insulation with superior fire performance.

• Kooltherm K9: Designed for soffit applications, offering excellent thermal efficiency.

   

Choosing the Right Products

Selecting the appropriate insulation board depends on various factors:​

• Application Area: Determine whether the insulation is for roofing, walls, or below-grade areas.
• Thermal Requirements: Determine the required R-value to meet energy efficiency goals.
• Moisture Exposure: For damp environments, opt for boards with high moisture resistance, such as XPS.

• Fire Performance: In areas where fire resistance is crucial, phenolic boards like Kooltherm are recommended.

   

Key Benefits of Insulation Boards

Insulation boards provide a modern and efficient way to enhance thermal performance and improve energy efficiency in buildings of all sizes. Here's why they’re a go-to solution for both homeowners and professionals:

1. Superior Thermal Performance

Insulation boards — especially Polyiso, XPS, and phenolic types — deliver excellent R-values, helping maintain a consistent indoor temperature year-round. This reduces the demand for heating and cooling systems, ultimately lowering energy bills.

2. Moisture Resistance

Many insulation boards, such as XPS and foil-faced Polyiso, are designed with moisture resistance in mind. This makes them ideal for below-grade applications, foundation walls, and areas prone to dampness or condensation.

3. Lightweight & Easy to Install

Compared to other insulation materials, boards are lightweight, easy to cut, and quick to install — saving time and labor on-site. Their rigid structure also allows for a snug fit, reducing thermal bridging.

4. Space-Saving Efficiency

Thanks to their high insulation value per inch, boards like Kingspan Kooltherm are ideal for areas with limited space. A thinner board can still meet building regulations without compromising room size.

5. Versatile Applications

Whether you're insulating walls, floors, roofs, or basements, there’s a board type that fits the job. Many come with facing options (foil, fiberglass, or plain) for added performance and flexibility.

6. Enhanced Fire and Acoustic Properties

Some advanced insulation boards, such as phenolic boards, offer improved fire resistance and acoustic insulation, contributing to a safer and quieter environment.

7. Sustainability & Energy Efficiency

Using insulation boards can significantly reduce a building’s carbon footprint by lowering energy consumption. Many boards are also manufactured with environmentally friendly processes or recycled materials.

Why R-Value is important in Insulation Items

The R-value of an insulation board is a crucial factor in determining its ability to resist heat flow. In simple terms, a higher R-value means better insulation performance. This is important because it directly impacts the energy efficiency of a building. Effective insulation helps maintain comfortable indoor temperatures by keeping warmth in during winter and heat out during summer. As a result, it reduces the strain on heating and cooling systems, leading to lower energy bills and improved indoor comfort. Choosing the proper R-value, based on your climate, application area, and local building regulations, ensures that your insulation delivers long-term performance, energy savings, and enhanced sustainability.

Why Choose Roofing4US?

• Extensive Selection: From top brands like Atlas, Rmax, Owens Corning, and Kingspan.
• Expert Guidance: Our team is here to help you choose the ideal insulation solution.
• Competitive Pricing: Quality products at prices that fit your budget.
• Convenient Shopping: Easy online ordering with prompt delivery services.