INSULATION BONDED TO PLASTERBOARD

Insulation bonded to plasterboard is a building material, which consists of a sheet of plasterboard (normal or moisture resistant wallboard) and a sheet of insulating material (PIR, Phenolic, Polystyrene) sandwiched together into a one single sheet. Insulated plasterboard is used to line internal walls, usually, brick walls when both insulation and dry-lining is needed. Insulated plasterboard is cheaper and quicker to install than the traditional dry-lining or insulation method. It also eliminates the problem of surface condensation, saving wear and tear on surface finishes. It is often called a Thermal Board, that insulates and dry lines walls in one simple application. In fact, it is a cheaper solution than buying both constituent parts. 
Thermal insulated plasterboards are easy to handle and quick to install. You can use the same fixing methods as on ordinary plasterboard. The need for battens and separate insulation is eliminated, thereby speeding up construction time and providing a durable internal lining system. No special tools are required, as boards can be cut using standard hand tools. 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. Therefore it has been incredibly popular due to installation time and cost. The ability to install quickly is a huge advantage. Once fixed, boards are ready for finishing. They can be either plastered with multifinish or taped jointed. 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. 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%. For more information on how to install insulated plasterboard 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.

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. 

PRODUCTS

Xtratherm XT/TL Insulated Plasterboard Thermal Liner

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

Celotex PL4000 Insulated Plasterboard PIR Thermal Laminate

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 

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

INSULATED PLASTERBOARD THICKNESS

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 internal wall applications. The different thicknesses of plasterboard are used depending on the grade of insulation bonded to it - either 12.5mm or 9.5mm wallboard. Both products are suitable for internal applications, fixed with adhesive direct bonding technique (adhesive dabs). All boards are easily applicable measuring 2400mm x 1200mm (8' x 4'). Generally speaking, using insulated plasterboard you are not limited to any thickness. Gyproc Therma-Line or Knauf EPS Thermal Laminate boards are as thin as 22mm thick. 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. The best and popular thicknesses are: 22mm, 25mm, 30mm, 40mm, 52.5mm and 62.5mm. 

FOAM BACKED PLASTERBOARD BUILDING REGULATIONS

Where 50 percent 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 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. 

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, Xtratherm 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.

THERMAL PLASTERBOARD PRICES

If you are looking for the plaster-boarding internal wall, cost per m2 you can simply call us on 02081910776, email us or use the live chat in the bottom right-hand corner. Here at InsulationGo we offer Top Brands at affordable prices. Please note, the costs given are given in good faith as an indicative guide only and should be used with understanding. Insulationgo Limited cannot accept any liability for any budget produced using these figures.

The actual cost of internal wall insulation will vary according to the type of insulation specified. You should expect to pay anything between £11/m2 to £39/m2 and £130/m2 when a new stud wall is built. In terms of m2 coverage cost internal insulation can be classified in particular order:

• EPS/Polystyrene bonded to plasterboard - £11.02/m²
• PIR insulation bonded to plasterboard -  £20.89/m²
• PIR insulation bonded to moisture resistant plasterboard -  £27.20/m²
• Phenolic insulation bonded to plasterboard - £29.98/m²

But when it comes to performance the list takes the following form:

• Phenolic insulation bonded to plasterboard - Thermal Conductivity of 0.018W/mK
• PIR insulation bonded to plasterboard - Thermal Conductivity of 0.022W/mK
• EPS/Polystyrene bonded to plasterboard - Thermal Conductivity of 0.040W/mK

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