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You’ve decided to improve your insulation with insulated plasterboard.

The question is:

What is the standard size of plasterboard? And is it right for your project?

To help you out, at Roofing Superstore we put together an in-depth guide to insulated plasterboard sizes available from leading manufacturers, including Celotext, Gyproc and Kingspan.

Read on.

Table of contents:

What is insulated plasterboard?

Insulated plasterboard, also known as insulated drywall or insulated wallboard, is known as a separate product for its unique benefits that don’t come with traditional plasterboard solutions, including better energy efficiency, thermal performance and sound insulation

What’s more:

Insulated plasterboard simplifies the construction process compared to using separate insulation and plasterboard materials.

And that’s not all:

Insulated plasterboard also provides an efficient way to add insulation to walls without significantly increasing the wall thickness. This can be particularly valuable in situations where space is limited, as it minimises the impact on room dimensions while still improving thermal performance.

The product typically consists of plasterboard, covered with a layer of insulation attached to it. As such, there’s no need to spend time and extra costs on two separate products when installing them in the property.

What can insulated plasterboard be used for?

Typically, insulated plasterboard can be used for ceilings, partition walls and internal walls. Apart from the obvious benefits we’ve already discussed, the popularity of insulated plasterboard also comes from the fact there can be a short time between installation and decoration.

Insulated plasterboard can also be used for:

  • Commercial projects
  • Domestic projects
  • New builds
  • Refurbishments
  • Self builds

You can also upgrade cavity wall insulation with insulated plasterboard that adheres to the masonry inner leaf or can be mechanically fixed to timber battens.

Insulated plasterboard sizes

Check out what insulated plasterboard sizes are available to ensure you’re set up with the right product for your project!

Celotex sizes

Each piece of Celotex insulation undergoes thorough inspection and precise measurement to guarantee that it consistently meets the highest quality standards, supported by BBA certification

PlasterboardLengthWidthThickness (insulation)Thickness (plasterboard)
PL40252400mm1200mm25mm 12.5mm
PL40402400mm1200mm40mm (52.5 overall)12.5mm
PL40502400mm1200mm62.5mm12.5mm
PL40602400mm1200mm60mm12.5mm

Gyproc sizes

Gyproc boards are manufactured from a combination of gypsum plasterboard which is bonded to extruded polystyrene foam insulation layer.

PlasterboardLengthWidthThickness
Gyproc Thermaline Basic Tapered Edge Wallboard2400mm1200mm22mm
Gyproc Thermaline Basic Tapered Edge Wallboard 2400mm1200mm30mm
Gyproc Thermaline Basic Tapered Edge Wallboard 2400mm1200mm40mm
Gyproc Thermaline Plus Tapered Edge Wallboard2400mm1200mm27mm
Gyproc Thermaline Plus Tapered Edge Wallboard 2400mm1200mm35mm
Gyproc Thermaline Plus Tapered Edge Wallboard 2400mm1200mm40mm
Gyproc Thermaline Plus Tapered Edge Wallboard 2400mm1200mm48mm
Gyproc Thermaline Super Tapered Edge Wallboard 2400mm1200mm50mm
Gyproc Thermaline Super Tapered Edge Wallboard 2400mm1200mm60mm
Gyproc Thermaline Super Tapered Edge Wallboard (Pallet of 10)2400mm1200mm90mm
Gyproc Thermaline Super Tapered Edge Wallboard (Pallet of 13)2400mm1200mm70mm

Kingspan sizes

Kingspan’s insulated plasterboard offers superior performance, lower lambda interior wall insulation which is suitable for adhesive bonded/plaster dab or mechanically fixed dry-lining.

PlasterboardLengthWidthThickness
Insulated Plasterboard by Kingspan K118 Kooltherm2400mm1200mm32.5mm
Insulated Plasterboard by Kingspan K118 Kooltherm2400mm1200mm37.5mm

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