Question 1

1. What is Celotex insulated plasterboard?

Accepted Answer

Celotex insulated plasterboard is a PIR insulation board bonded to plasterboard. It combines thermal insulation and internal lining in one product.

Question 2

2. How do you attached Celotex insulated plasterboard?

Accepted Answer

You can install Celotex’s insulated plasterboard using adhesive bonding methods like dot and dab for masonry walls, or mechanical fixings to attach it to timber or metal stud framing.

Question 3

3. Can Celotex insulated plasterboards be used on solid walls?

Accepted Answer

Yes, it is commonly used to line solid masonry walls internally. This helps improve thermal performance where external insulation is not practical.

Question 4

4. How does Celotex PL4000 compare to standard plasterboard for thermal insulation?

Accepted Answer

Celotex PL4000 insulated plasterboard provides significantly higher thermal performance than standard plasterboard because of its PIR insulation layer. Standard plasterboard offers very limited thermal insulation on its own, being primarily designed as an internal lining or finishing board rather than a thermal element in the build-up.

In numbers, a typical Celotex PL4000 board can achieve R-values from around 1.20 to 3.00 m²K/W depending on thickness, while standard plasterboard contributes only a small fraction of that thermal resistance.

Celotex insulated plasterboard

72.5mm Celotex PL4060 Insulated Plasterboard Tapered Edge 2400mm x 1200mm

52.5mm Celotex PL4040 Insulated Plasterboard Tapered Edge - 2400mm x 1200mm

62.5mm Celotex PL4050 Insulated Plasterboard Tapered Edge 2400mm x 1200mm

37.5mm Celotex PL4025 Insulated Plasterboard Tapered Edge - 2400mm x 1200mm

77.5mm Celotex PL4065 Insulated Plasterboard Tapered Edge - 2400mm x 1200mm