Insulated plasterboard

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Thermal insulated plasterboard for rooms and lofts

Building regulations drive improvements in thermal efficiency and are applicable, to new builds, change of use and renovation projects.  Regulations require these projects to meet specified U-values.

Siniat Thermal Board systems are a cost effective and simple solution for thermal insulation and meeting U-values which also help reduce energy bills and create a comfortable, warm living environment.

Meet U-Values regs and reduce energy bills

GTEC Thermal Boards

Our thermal insulated plasterboards are used to prevent heat loss through walls and loft spaces and suitable for a wide range of conversion, refurbishment or new build projects.

Siniat GTEC Thermal Board

  • A range of thermal property boards available to meet your specific needs.
  • Up to 46 times thermal improvement over standard board.
  • Reduced energy costs.
  • Warmer in the winter, cooler in the summer.
  • Includes a metalised vapour barrier layer (Thermal PIR and Thermal K). 
  • Simple solution to meet U-Value.

Work out what you need with our Product calculator

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Assembly and installation

We have step-by-step guides to show you how to insulate your walls or ceilings, in both diagram and video format.

Thermal U Value Calculator

There are a number of ways we can assist you with meeting Part L Building Regulations for U Values.  We have a helpful and easy to use digital tool which based on simple user input will determine the most suitable drylining products for your walls or loft space, whilst meeting the regulations. Our U Value calculator is available online or as a free ios or android app.  
Try it now.....

For larger projects or where more detailed information is required our Technical Enquiry line are here to help. Contact our Technical Enquiry Line on 01275 377456 or 0800 1456033 or email

Siniat Thermal U-Value Calculator

Case study: Loft

We recognise the importance of quality and comfort in your home – and this is where our products can make a real difference. Our specialist plasterboards are used as a matter of course in the commercial sector, because architects and contractors know that better construction products is an investment for the future.

Siniat Solutions Residential Loft Conversion Metal Stud
Siniat Solutions Residential Loft Conversion Thermal PIR
Siniat Solutions Residential Loft Conversion
Steve Jenkins

Steve Jenkins,
Homeowner, Lambeth, London

“We’ve recently converted our loft into an extra bedroom.

The ceiling isn’t very high and we really didn’t want to lose any unnecessary height to bulky insulation material if we didn’t need to. Our builder went through some options and we decided to go with a Siniat product called Thermal PIR. It’s really thin – only 37.5mm – and so it had very little impact on our useable space. It helps keep it warmer in winter and cooler in the summer.”

Plasterboards for any room

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