THERMAL PLASTERBOARD

Thermal plasterboard is a combination product that consists sheet of a standard gypsum board pre-bonded to insulating material sandwiched together into a single sheet. Thermal Board insulates and dry lines walls in one simple application. It is commonly used on internal walls to improve their thermal capabilities, without adding too much depth. Thermal plasterboard or Insulated Plasterboard is one of the most cost-effective insulation methods in comparison to other insulation products. It can be fixed with plasterboard screws or even adhesive, making it an easier option. In fact, it is a cheaper solution than buying both constituent parts. Therefore it has been incredibly popular due to installation time and cost. Insulated plasterboard is highly effective as a thin form of thermal insulation. The ability to install quickly is a huge advantage. This 2 in 1 product brings a whole host of benefits to your home. Starting from low labour costs to low heating bills. Once fixed, boards are ready for finishing. They can be either plastered with multifinish or taped jonited. Future costs will be kept down due to the energy efficiency of Thermal Plasterboard. Square edge plasterboard is available if you do want to plaster the wall, leaving you with a smooth and flat finish perfect for decorating. Alternatively, tapered edge plasterboard is available for dry-lining the surface, so the boards can be painted over immediately, perfect for new dividing walls or for cases where the wall is being upgraded to insulated plasterboard. For more information on how to install insulated plasterboard click here. To see how install thermal board with Dot & Dab technique click here.

INSULATED PLASTERBOARD THICKNESS

Generally speaking, using insulated plasterboard you are not limited to any thicknesses. 8’ x 4’ boards thicknesses may vary according to application, but some of sheets such as Gyproc Therma-Line or Knauf EPS Thermal Laminate boards are as thin as 22mm thick.

Thermal insulated boards are bonded to 2 types of plasterboard. Either 12.5mm or 9.5mm wallboard. Both products are suitable for internal applications, fixed with adhesive direct bonding technique (adhesive dabs). The thickness of the insulated plasterboard depends on the thickness of the underlying insulation core. For instance 15mm insulation core, 12.5mm panels are glued and so on. Using 62.5mm insulated plasterboard will do the same job as 100mm of acoustic roll. With a 62.5mm board you should expect to see a reduction in your heating bills by around 25%. The best and popular thicknesses are: 22mm, 27.5mm, 30mm, 40mm, 52.5mm and 62.5mm. 

Insulated plasterboard range comes from well-known brands Celotex, Xtratherm, British Gypsum, Knauf and Kingspan so you're free to take your pick between whichever suits you. Both the Celotex and Kingspan insulated plasterboard offerings come in many sizes and thicknesses for application in between and under rafters and joists, in solid masonry walls and in timber frame builds. All boards are easily applicable measuring 2400mm x 1200mm. To see all available insulated plasterboard thicknesses click here. To find out what are the benefits of insulatrd plasterboard click here.

FOAM BACKED PLASTERBOARD BUILDING REGULATIONS

Building Regulations are law and must be met when applied to any project over a certain size. Where 50% or more of the internal wall is being renovated building regulations would normally apply, and the thermal insulation of the wall would have to meet the standards required by building regulations approved documents.

The regulation that refers to the thermal efficiency requirements when carrying out renovation or replacement work on an existing dwelling is explained in Approved Document L1B (ADL1B). For instance, to meet Part L when constructing an extension you need to meet the a U-value of 0.28W/m2K. When new layers are added to a thermal element through being dry lined internally the U-value of 0.30W/m2K is required. If at least 50% of the element is being renovated then it should be upgraded to achieve the U-values as follow:

Pitched roof - insulation at ceiling level – 0.16W/m2K

Flat roof or roof with integral insulation – 0.18W/m2K

Pitched roof - insulation between rafters – 0.18W/m2K

According to building regulations insulated plasterboard should normally be at least 60mm thick, and can be up to 100mm. When we talk about foam backed plasterboards either Celotex, Xtartherm or Kingspan are the best products of choice. While Celotex offers PL4000 insulation board, Unilin offers XT/TL Thermal Liner. On other hand, Kingspan Kooltherm K118 range is a high-efficiency phenolic insulation core with a certified thermal conductivity (lambda value) of 0.018W/mK. British Gypsum and its 22mm Gyproc Therma-Line Basic Insulated Plasterboard followed by 22mm Knauf EPS Thermal Laminate Insulated Board are not suitable as they don’t meet current building regulations.

Therefore, 22mm, 30mm, 40mm thickness should only be used if you insulate less than 50% of your room. To find out if insulated plasterboard is risky to use internally click here.

TYPES OF INSULATED PLASTERBOARD

There are many different types of insulation laminated to plasterboard. This combination product offers either PIR core, Phenolic foam core or EPS (polystyrene) core. Depending on the design, you can choose from various types of insulation setups. All of them are available in a variety of sizes and thicknesses. Moreover, boards are available either in standard or moisture resistant versions.

PHENOLIC CORE

This is a high grade, phenolic foam three-in-one product for internal wall insulation used as mechanically fixed and adhesively bonded 'dot and dab' insulated plasterboard. It is suitable for internal walls, roofs and ceilings applications.

PRODUCTS 

Kingspan Kooltherm K118 Insulated Plasterboard  

Xtratherm Safe-R SR/TB Thermal Liner 

Xtratherm Safe-R SR/TB-MF Thermal Liner 

PIR CORE

Rigid insulation panels bonded to plasterboard have a PIR foam core, which is covered on both sides with an aluminum foil. This solution is ideally suited for attics or internal walls. We get here an insulation layer along with a finishing layer. Being able to paint directly onto the surface of the new wall is convenient and saves time and money. PIR insulated boards are suitable for internal walls, sloped roofs and ceilings. These insulated plasterboards incorporate an integral vapour control layer, which helps to reduce the risk of condensation. The thermal laminates boards are suitable for direct bonding ('dot and dab') and mechanically fixed installation techniques. Both are most cost-effective insulation methods in comparison to other insulation products. PIR plasterboard is incredibly popular due to the reduction in labour and construction times. To find out if you need to use VCL with this type of insulation, click here.

PRODUCTS

Unilin XT/TL Insulated Drylining Wall PIR Insulation

Unilin XT/TL-MR Thermaliner PIR MR Insulated Plasterboard

Xtratherm XT/TL Insulated Plasterboard Thermal Liner

Xtratherm XT/TL-MR Insulated Plasterboard Moisture Resistant Thermal Liner

Celotex PL4000 Insulated Plasterboard PIR Thermal Laminate

 
EPS CORE

Basic, low grade expanded polystyrene foam insulation bonded to plasterboard. This type of plasterboard is normally made up of 9.5mm gypsum board, backed with a sheet of expanded polystyrene. The thickness of the insulating sheet can vary between 22mm and 50mm, depending on the insulation level needed. Can be used to line the walls of internal rooms for both new build and refurbishment projects.

PRODUCTS

Gyproc Therma-Line Basic Insulated Plasterboard British Gypsum

Knauf EPS Thermal Laminate Insulated Board

THERMAL PLASTERBOARD PRICES

Because plasterboard can be used in so many different situations, it is important to know you’re getting the best price, particularly if you’re working within a tight budget. If you are looking for the plaster-boarding cost per m2 – just call 02081910776. Here at  InsulationGo  we offer Top Brands at affordable prices. You can choose between:

• Phenolic insulation bonded to plasterboard,
• PIR insulation bonded to plasterboard, 
• PIR insulation bonded to moisture resistant plasterboard,
• EPS/Polystyrene bonded to plasterboard.

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