Thermal laminate board
Plasterboard bonded to an insulation board.
- Where it is used: Inside face of external walls.
- Watch out: As well as bonding it, add fixing plugs.
Brands and types in the UK (5)
British Gypsum Gyproc ThermaLine Plus 27mm Insulated Plasterboard
Insulated plasterboard for medium thermal upgrade to walls and ceilings, combining plasterboard, extruded polystyrene, and vapour control.
Technical data
- Size: 2400 x 1200mm
- Thickness: 27mm
- Composition: 9.5mm WallBoard on Extruded Polystyrene
- Thermal Resistance: 0.54m²K/W
- Reaction to Fire: B-s1, d0
Source: Builder Depot
British Gypsum Gyproc ThermaLine Basic 22mm Insulated Plasterboard
Insulated plasterboard for basic thermal upgrade to walls and ceilings, bonds 9.5mm plasterboard to expanded polystyrene.
Technical data
- Size: 2400 x 1200mm
- Thickness: 22mm
- Composition: 9.5mm WallBoard on Expanded Polystyrene
- Thermal Resistance: 0.35m²K/W
- Reaction to Fire: B-s1, d0
Source: Builder Depot
Kingspan Kooltherm K118 37.5mm Insulated Plasterboard
Premium performance internal thermal insulation board with rigid thermoset phenolic insulant and fibre-free core.
Technical data
- Thermal conductivity: 0.019 W/mK
- Thickness: 37.5mm
- Length: 2400mm
- Width: 1200mm
- Approximate weight: 11.57 kg/m2
Source: Builder Depot
Knauf XPS Laminate Plus Insulated Plasterboard 27mm
CFC and HCFC-free extruded polystyrene bonded to 9.5mm Knauf wallboard for enhanced thermal performance with good vapour resistance.
Technical data
- Dimensions: 27 x 1200 x 2400 mm
- Thickness: 27 mm
- Width: 1200 mm
- Thermal Conductivity: 0.033 W/mK
- Weight: 22 kg
Source: Wickes
EcoTherm Eco-Liner 37.5mm Insulated Plasterboard
2-in-1 insulated plasterboard with 25mm PIR insulation bonded to 12.5mm plasterboard to reduce heat loss and dryline.
Technical data
- Thickness: 37.5mm
- Length: 2.4m
- Width: 120cm
- Thermal conductivity: 0.022 W/mK
- Compressive strength: 140kPa
Source: B&Q
Sources: product listings from B&Q, Builder Depot, Wickes, checked on 31-10-2026. Photos are from Builder Depot (with permission) the manufacturer or the shop (shown under each photo); where there is no photo we show a drawing. Original Fixiz Academy text; data can change, always check the manufacturer data sheet.