U Value Warmline PIR Paper insulated plasterboard combines rigid PIR insulation with a plasterboard face to help form an insulated internal lining. This can be useful when improving thermal performance in a room while still providing a plasterboard surface for suitable finishing, subject to the design of the wall or roof lining system.
Combined PIR insulation and plasterboard for internal lining systems
The live thickness options are 37.5, 52.5, 62.5 and 72.5mm. These total board thicknesses allow different lining depths, but a thicker option does not automatically prove compliance with a particular U-value target. The complete building element, joints, fixings and thermal bridges must all be assessed.
Available sizes and buying options
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Product: U Value Warmline PIR Paper Insulated Plasterboard
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Thickness options: 37.5mm, 52.5mm, 62.5mm, 72.5mm
How to choose the right product
Before buying, consider internal space lost to the lining, existing wall moisture, condensation risk and whether services or fixings will penetrate the insulation. A competent designer should assess ventilation, vapour control and the intended build-up, especially when insulating older solid walls. Board format and thickness should be selected against the project requirements.
Installation and project considerations
Confirm whether the chosen board is approved for mechanically fixed, bonded or other application on the proposed background. Follow the manufacturer's instructions for perimeter seals, joints, service penetrations and fire-related detailing. Check suitable fixings for cupboards, radiators and other loads: plasterboard alone cannot safely support every fixture.
Related materials and buying advice
Compare rigid insulation boards before making your selection. You can also browse plasterboard sheets alongside this product, find complementary plaster and dry lining materials for the job, and consult our UK home insulation buying guide for wider guidance.
Frequently asked questions
What is PIR insulated plasterboard?
It is a composite lining board combining PIR thermal insulation with plasterboard.
Which thicknesses can I order?
37.5, 52.5, 62.5 and 72.5mm.
Does a thicker board always meet Building Regulations?
Not by itself. The whole construction's thermal performance must be calculated.
Can I put this directly on a damp wall?
Existing moisture problems should be investigated and resolved; assess condensation risk and the approved lining system first.
Is insulated plasterboard the same as standard plasterboard?
No. It includes an insulating layer and has different overall depth and installation considerations.