Gyproc Thermaline Basic Plasterboard - 2400mm x 1200mm x 22mm

Gyproc Thermaline Basic Plasterboard provides a reliable level of thermal insulation for various b...

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Travis PerkinsBritish Gypsum Gyproc Thermaline Basic Plasterboard Tapered Edge 2400mm x 1200mm x 22mm (2.88m²/ Sheet)
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Product Information

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Gyproc Thermaline Basic Plasterboard is designed for professional contractors and DIY renovators seeking to improve the thermal efficiency of interior walls in both new-builds and refurbishment projects. By combining standard plasterboard with an integrated expanded polystyrene insulant, this product provides a high-performance solution for reducing heat loss and improving occupant comfort; however, the 22mm total thickness requires careful consideration regarding existing door frames and window reveals.

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BrandGyproc

Extended Product Information

FAQs

Can I use this board in bathrooms?

While it provides thermal benefits, ensure proper ventilation and moisture-resistant measures are taken if installing in high-humidity areas.

Does this board act as a vapor barrier?

This board does not contain a built-in vapor control layer; consider using a vapor-check variant if your building project specifies one.

How do I cut the boards?

Use a sharp utility knife to score the paper face and snap the board; the polystyrene backing can be cut with a fine-toothed hand saw or a dedicated foam cutter.

Can these be fixed to metal studs?

Yes, provided the correct self-drilling screws for insulated plasterboard are used.

Is the insulation flammable?

The polystyrene meets building regulation standards for fire performance, but like all insulation materials, it should be covered properly with plasterboard face and finish.

Troubleshooting

Board feels loose after adhesive application

Ensure mechanical fixings are used alongside adhesive if the wall surface was uneven or dusty.

Cracking at the joints

Verify that high-quality joint tape was used and that the temperature in the room was stable during the drying process.

Difficulty mounting heavy objects

Use long, specialized fixings that penetrate through the insulation layer into the solid masonry or timber stud behind.

Pros and Cons

Pros

  • Reduces heat loss through walls effectively
  • Easy to install thanks to tapered edges
  • Environmentally friendly insulation material
  • Suitable for a wide range of interior wall types
  • Provides a finished surface ready for decoration

Cons

  • Adds 22mm to the thickness of existing walls
  • Requires proper handling to avoid damaging the polystyrene backing
  • Not suitable for load-bearing applications
  • Requires specific fixings for insulated plasterboard

Setup, Compatibility & Care

Installation should be performed by fixing the boards directly to the substrate using `Gyproc Dri-Wall Adhesive` or mechanically fixed onto timber studs. Due to the 22mm thickness, ensure that all electrical socket back-boxes are extended accordingly to maintain safety standards. Once installed, the tapered edges should be taped and jointed using standard jointing compounds or skimmed with a thin coat of multi-finish plaster. Store the boards flat in a dry environment and avoid dropping them, as the polystyrene backing can compress or deform, which may result in hollow spots after installation.

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