Which to chose: Knauf XPS Laminate Plus Insulated Plasterboard 27mm or Celotex PL4000 Insulated Plasterboard 37.5mm
Information, help, tips and advice on cavity walls, ceilings and lofts etc....

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John89
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Which to chose: Knauf XPS Laminate Plus Insulated Plasterboard 27mm or Celotex PL4000 Insulated Plasterboard 37.5mm

by John89 » Wed Oct 18, 2023 9:56 am

Hi all,
A kids' bedroom is really cold. Two cavity walls with no insultation.
I am considering insulating it from inside with the insulated plasterboard.
Which one to chose: Knauf XPS Laminate Plus Insulated Plasterboard 27mm or Celotex PL4000 Insulated Plasterboard 37.5mm:
1) Which one gives better heat insulation?
2) Can both be installed using Plasterboard Adhesive Foam?

Thank for your advice.

stoneyboy
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Re: Which to chose: Knauf XPS Laminate Plus Insulated Plasterboard 27mm or Celotex PL4000 Insulated Plasterboard 37.5mm

by stoneyboy » Thu Oct 19, 2023 12:00 am

Hi john89,
The Knauf insulation material has a lambda value of 0.03.
The Celotex insulation material has a lambda value of 0.022 so you are better off with the celotex.
Regards S

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