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Brick Superstore£129.00Visit shop Celotex Green High Performance Insulation Board Xr4200 - 2.4M X 1.2M X 200Mm Pir
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The Celotex XR4200 is a versatile, high-performance insulation board engineered for contractors and DIY enthusiasts who need maximum thermal efficiency in a slim profile. Ideal for pitched roofs, flat roofs, solid floors, and wall systems, this board significantly reduces heat loss with an impressive R-Value of 9.05mK/W. While its 200mm thickness offers superior thermal resistance, users should note that the board's rigid nature requires precise cutting and careful planning to fit into tighter construction spaces compared to thinner insulation rolls.
| Model Part Number | XR4200 |
|---|---|
| Brand | Celotex |
The Celotex XR4200 offers an R-Value of 9.05mK/W.
Yes, it is highly effective for solid floor applications due to its high compressive strength and thermal performance.
The foil facings act as a vapor control layer; however, joints must be taped correctly to provide a truly effective barrier.
Each board measures 2400mm x 1200mm with a thickness of 200mm.
Yes, the board is compatible with both timber and steel-framed building systems.
Standard safety gear including gloves, safety glasses, and a dust mask is recommended when cutting the boards to avoid irritation.
Verify your project's U-value requirements. If space is limited, consider if a thinner board type is viable, or adjust the framing depth.
Fill any small gaps with expanding foam insulation and seal all joints with professional-grade foil tape to ensure thermal continuity.
Use a long-blade insulation saw or a sharp hand saw to prevent crumbling of the rigid foam core.
To install, ensure the substrate is clean, dry, and level. The boards can be cut using a fine-toothed saw or a sharp blade; always measure twice to minimize waste. When fitting between rafters or studs, ensure a tight fit to prevent cold bridging. If creating a continuous thermal layer, tape the joints with high-quality foil tape to maximize the effectiveness of the low-emissivity surface. Store the boards in a cool, dry area on a flat surface to prevent warping, and keep them protected from direct sunlight and excessive moisture before installation.
