PIR Insulated Plasterboard - 32.5mm x 1200mm x 2400mm - 6 Pack
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B&Q - 32.5mm Pir Insulated Plasterboard 2400mm X 1200mm (6/pack)
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HomebasePIR Insulated Plasterboard 32.5 x 1200 x 2400mm 6 Pack
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Product Information
Full details
This PIR Insulated Plasterboard is designed for professional contractors and DIY enthusiasts looking to improve the thermal efficiency of internal walls and ceilings in one simple step. By combining a rigid polyisocyanurate core with a 12.5mm tapered-edge plasterboard, it offers a dual-purpose solution that provides both effective insulation and a ready-to-finish surface, though its rigid nature requires careful handling to avoid corner damage during transport and installation.
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FAQs
Can I use these boards in a bathroom?
Yes, but ensure all joints are sealed with moisture-resistant tape and that the wall is tiled or finished with appropriate waterproof coatings.
What is the R-value of this board?
The R-value is determined by the thickness of the PIR core; at 32.5mm total depth, this provides a substantial thermal improvement for thin-profile insulation.
How do I cut the PIR boards?
A standard sharp utility knife is usually sufficient to score the plasterboard, then snap the board over a straight edge; use a handsaw for thicker sections.
Are these boards fire resistant?
The plasterboard face provides standard fire-resistant properties, but always check local building regulations for specific fire-rating requirements in your project.
Can I apply these directly to a damp wall?
No. You must identify and fix the source of moisture before installing any insulation, as trapped moisture will damage the board over time.
Troubleshooting
Board is cracking during mechanical fixing
Ensure you are using the correct length of drywall screws and not overtightening, which can crush the PIR core.
Visible gaps between boards
Use jointing compound and paper tape to bridge gaps, ensuring a seamless finish before applying primer or paint.
Adhesive not sticking to masonry
Clean the wall surface of dust, debris, and loose mortar before applying dabs to ensure a strong bond.
Pros and Cons
Pros
- Combined thermal insulation and plasterboard finish
- Effective vapour control barrier included
- Space-saving profile suitable for confined areas
- Easy to install on standard stud work or masonry
- Professional finish ready for immediate decoration
Cons
- Rigid board can be prone to corner cracking if mishandled
- Requires precise cutting tools for clean edges
- Total thickness may require longer mechanical fixings
Setup, Compatibility & Care
Installation should be carried out using appropriate mechanical fixings or high-tack wallboard adhesives. Ensure the substrate is clean, dry, and level before application. When cutting the boards, use a fine-toothed saw or a sharp utility knife to score and snap the board to ensure the PIR core is not compressed or damaged.
Store boards in a flat, dry, and ventilated area protected from the elements. Due to the foil facing, avoid exposing the board to prolonged direct sunlight or high-moisture conditions during storage. If installing in damp-prone areas, ensure all joints are properly sealed with vapor-proof tape to maintain the integrity of the vapor control layer.