What is solid wall insulation UK?

In the UK, solid wall insulation is used for properties built without wall cavities. These are often older brick or stone homes. It adds an insulating layer to either the interior or exterior surface of your walls and is an effective solution to enhance warmth and minimise heat loss.

What is solid wall insulation made of?

It can be made from a variety of materials, including EPS, XPS, PIR, phenolic foam, or mineral wool. Each type offers its own benefits, often combining fire resistance, acoustic insulation, and exceptional thermal performance. Some materials, such as phenolic foam, offer high thermal insulation in thin profiles and are a good choice when indoor space is limited.

What is external solid wall insulation?

External insulants for solid walls are available as insulating boards and are fixed to the outer wall surface. The insulation is then covered with a waterproof render or decorative finish. It keeps the home interior warm without affecting interior space, and can give your property a fresh new look.

How to install solid wall insulation?

Installation depends on whether you’re insulating internally or externally. For external systems, attach insulation boards to the outer walls, add mesh reinforcement, and finish with render. For internal systems, fix insulated plasterboards or battens to interior walls, skim and apply finishing coats to the surface. Ensure airtightness and vapour control details are correctly integrated to prevent moisture issues. Always follow the manufacturer's guidance or consult a professional installer for the best results.

How much does solid wall insulation cost?

The cost of solid wall insulation depends on factors such as the material used, wall area, and method of installation. On average, external wall insulation is pricier than internal systems but offers better long-term performance and savings. For accurate pricing, check our online store or speak to our support team for a tailored quote.

Solid Wall Insulation At Low Wholesale Price

50mm Rockwool Ablative Coated Batt 1200mm x 600mm x 0.72m2

50mm Rockwool Ablative Coated Batt is a mineral wool insulation product, pre-coated on both sides with a high performance ablative coating. Rockwool Ablative Coated Batt application includes multiple substrates including solid walls and floors and flexible walls.

£22.23£26.68 Ex VATInc VAT Add to cart

52.5mm Recticel Eurothane PL Insulated Plasterboard 2400mm x 1200mm (8′ x 4′) 2.88m2

Recticel-Insulated-Plasterboard-Roof-Application

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52.5mm Recticel Eurothane PL Insulated Plasterboard 2400mm x 1200mm (8′ x 4′) 2.88m2

52.5mm Recticel Eurothane PL pairs high-performance insulation with plasterboard, making homes warmer with a sleek, easy-fit design.

£45.68£54.82 Ex VATInc VAT
£15.86£19.03 Per M2 Add to cart

60mm Celotex PIR Insulated Plasterboard 1200mm x 2400mm + 12.5mm P/B 2.88m2

Celotex-Insulated-Plasterboard-PL-Wall-Application

60mm Celotex PIR Insulated Plasterboard 1200mm x 2400mm + 12.5mm P/B 2.88m2

60mm + 12.5mm Celotex PL4060 PIR Insulated Plasterboard is it is suitable for use in roof and internal wall lining applications. Celotex Insulated Plasterboard is a high performance, easy to install PIR insulation board with a paper facing, laminated to a piece of 12.5mm tapered edge plasterboard.

£57.17£68.60 Ex VATInc VAT
£19.85£23.82 Per M2 Add to cart

60mm Ecotherm Eco-Versal PIR Insulation Board 2400mm x 1200mm (8' x 4') 2.88m2

Ecotherm-Eco-Versal-Insulation-Board-Pitched-Roof-Application

Ecotherm-Eco-Versal-Insulation-Board-Floor-Application

Ecotherm-Eco-Versal-Insulation-Board-Pitched-Wall-Application

60mm Ecotherm Eco-Versal PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

60mm Ecotherm Eco-Versal is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Ecotherm Eco-Versal is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.

£27.88£33.46 Ex VATInc VAT
£9.68£11.62 Per M2 Add to cart

60mm IKO Enertherm ALU PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

IKO-Enotherm-PIR-Insulation-Board-Pitched-Roof

IKO-PIR-Insulation-Board-Therm-Floor-Application

60mm IKO Enertherm ALU PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

60mm IKO Enertherm ALU PIR (polyisocyanurate) insulation is a top-quality insulation board featuring a rigid PIR foam core and reflective aluminium foil facings. It delivers outstanding thermal performance and moisture resistance, making it suitable for various installations and an ideal choice for different energy-efficient projects.

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60mm Mannok PIR Insulated Plasterboard 1200mm x 2400mm + 12.5mm P/B 2.88m2

Mannok Therm Laminate-Kraft / MLK PIR 60mm + 12.5mm PIR Insulated plasterboard is a high performance, fibre-free insulated board. Mannok Therm Laminate-Kraft / MLK PIR has a kraft paper facing on one side and plasterboard bonded to the other side.

POA Get a quote

60mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

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Insulating-steel-stud-frame-cavity-walls

Insulating-solid-walls-with-internal-dry-lining-insulation-boards-fixed-by-battens

Insulating-solid-walls-with-internal-dry-lining-–-insulation-boards-fixed-to-battens

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60mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

60mm Mannok PIR Insulation Board is an excellent choice for anyone looking for a high-performance insulation solution that provides superior thermal efficiency. It is ideal for use in any construction project, such as commercial and residential, in wall applications as well as roofing and flooring applications.

POA Get a quote

60mm Recticel Eurothane GP PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

60mm Recticel Eurothane GP is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Recticel is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.

£30.60£36.72 Ex VATInc VAT
£10.63£12.76 Per M2 Add to cart

60mm Rockwool Ablative Coated Batt 1200mm x 600mm x 0.72m2

60mm Rockwool Ablative Coated Batt is a mineral wool insulation product, pre-coated on both sides with a high performance ablative coating. Rockwool Ablative Coated Batt application includes multiple substrates including solid walls, floors, and flexible walls.

£27.20£32.64 Ex VATInc VAT Add to cart

62.5mm Recticel Eurothane PL Insulated Plasterboard 2400mm x 1200mm (8′ x 4′) 2.88m2

62.5mm Recticel Eurothane PL Insulated Plasterboard 2400mm x 1200mm (8′ x 4′) 2.88m2

62.5mm Recticel Eurothane PL pairs high-performance insulation with plasterboard, making homes warmer with a sleek, easy-fit design.

£51.76£62.11 Ex VATInc VAT
£17.97£21.56 Per M2 Add to cart

70mm Ecotherm Eco-Versal PIR Insulation Board 2400mm x 1200mm (8' x 4') 2.88m2

70mm Ecotherm Eco-Versal PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

70mm Ecotherm Eco-Versal is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Ecotherm Eco-Versal is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.

£29.68£35.62 Ex VATInc VAT
£10.31£12.37 Per M2 Add to cart

70mm IKO Enertherm ALU PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

70mm IKO Enertherm ALU PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

70mm IKO Enertherm ALU PIR (polyisocyanurate) insulation is a top-quality insulation board featuring a rigid PIR foam core and reflective aluminium foil facings. It delivers outstanding thermal performance and moisture resistance, making it suitable for various installations and an ideal choice for different energy-efficient projects.

POA Get a quote

70mm Mannok PIR Insulated Plasterboard 1200mm x 2400mm + 12.5mm P/B 2.88m2

Mannok Therm Laminate-Kraft / MLK PIR 70mm + 12.5mm PIR Insulated plasterboard is a high performance, fibre-free insulated board. Mannok Therm Laminate-Kraft / MLK PIR has a kraft paper facing on one side and plasterboard bonded to the other side.

POA Get a quote

70mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′)

Suspended-timber-floors-other-than-ground-floor.

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70mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′)

70mm Mannok PIR Insulation Board is an excellent choice for anyone looking for a high-performance insulation solution that provides superior thermal efficiency. It is ideal for use in any construction project, such as commercial and residential, in wall applications as well as roofing and flooring applications.

POA Get a quote

70mm Recticel Eurothane GP PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

70mm Recticel Eurothane GP is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Recticel is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.

£34.42£41.30 Ex VATInc VAT
£11.95£14.34 Per M2 Add to cart

72.5mm Recticel Eurothane PL Insulated Plasterboard 2400mm x 1200mm (8′ x 4′) 2.88m2

72.5mm Recticel Eurothane PL Insulated Plasterboard 2400mm x 1200mm (8′ x 4′) 2.88m2

72.5mm Recticel Eurothane PL pairs high-performance insulation with plasterboard, making homes warmer with a sleek, easy-fit design.

£58.87£70.64 Ex VATInc VAT
£20.44£24.53 Per M2 Add to cart

75mm Ecotherm Eco-Versal Rigid PIR Insulation Board 2400mm x 1200mm (8' x 4') 2.88m2

75mm Ecotherm Eco-Versal Rigid PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

75mm Ecotherm Eco-Versal is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Ecotherm Eco-Versal is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.

£31.28£37.54 Ex VATInc VAT
£10.86£13.03 Per M2 Add to cart

75mm IKO Enertherm ALU PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

75mm IKO Enertherm ALU PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

75mm IKO Enertherm ALU PIR (polyisocyanurate) insulation is a top-quality insulation board featuring a rigid PIR foam core and reflective aluminium foil facings. It delivers outstanding thermal performance and moisture resistance, making it suitable for various installations and an ideal choice for different energy-efficient projects.

POA Get a quote

75mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

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75mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

75mm Mannok PIR Insulation Board is an excellent choice for anyone looking for a high-performance insulation solution that provides superior thermal efficiency. It is ideal for use in any construction project, such as commercial and residential, in wall applications as well as roofing and flooring applications.

POA Get a quote

75mm Recticel Eurothane GP PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

75mm Recticel Eurothane GP is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Recticel is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.

£35.05£42.06 Ex VATInc VAT
£12.17£14.60 Per M2 Add to cart

80mm Ecotherm Eco-Versal Rigid PIR Insulation Board 2400mm x 1200mm (8' x 4') 2.88m2

80mm Ecotherm Eco-Versal Rigid PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

80mm Ecotherm Eco-Versal is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Ecotherm Eco-Versal is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.

£34.01£40.81 Ex VATInc VAT
£11.81£14.17 Per M2 Add to cart

80mm IKO Enertherm ALU PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

80mm IKO Enertherm ALU PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

80mm IKO Enertherm ALU PIR (polyisocyanurate) insulation is a top-quality insulation board featuring a rigid PIR foam core and reflective aluminium foil facings. It delivers outstanding thermal performance and moisture resistance, making it suitable for various installations and an ideal choice for different energy-efficient projects.

POA Get a quote

80mm Mannok PIR Insulated Plasterboard 1200mm x 2400mm + 12.5mm P/B 2.88m2

Mannok Therm Laminate-Kraft / MLK PIR 80mm + 12.5mm PIR Insulated plasterboard is a high performance, fibre-free insulated board. Mannok Therm Laminate-Kraft / MLK PIR has a kraft paper facing on one side and plasterboard bonded to the other side.

POA Get a quote

80mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

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80mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

80mm Mannok PIR Insulation Board is an excellent choice for anyone looking for a high-performance insulation solution that provides superior thermal efficiency. It is ideal for use in any construction project, such as commercial and residential, in wall applications as well as roofing and flooring applications.

POA Get a quote

80mm Recticel Eurothane GP PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

80mm Recticel Eurothane GP is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Recticel is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.

£39.58£47.50 Ex VATInc VAT
£13.74£16.49 Per M2 Add to cart

82.5mm Recticel Eurothane PL Insulated Plasterboard 2400mm x 1200mm (8′ x 4′) 2.88m2

82.5mm Recticel Eurothane PL Insulated Plasterboard 2400mm x 1200mm (8′ x 4′) 2.88m2

82.5mm Recticel Eurothane PL pairs high-performance insulation with plasterboard, making homes warmer with a sleek, easy-fit design.

£70.51£84.61 Ex VATInc VAT
£24.48£29.38 Per M2 Add to cart

90mm Ecotherm Eco-Versal Rigid PIR Insulation Board 2400mm x 1200mm (8' x 4') 2.88m2

90mm Ecotherm Eco-Versal Rigid PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

90mm Ecotherm Eco-Versal is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Ecotherm Eco-Versal is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.

£38.81£46.57 Ex VATInc VAT
£13.48£16.18 Per M2 Add to cart

90mm IKO Enertherm ALU PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

90mm IKO Enertherm ALU PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

90mm IKO Enertherm ALU PIR (polyisocyanurate) insulation is a top-quality insulation board featuring a rigid PIR foam core and reflective aluminium foil facings. It delivers outstanding thermal performance and moisture resistance, making it suitable for various installations and an ideal choice for different energy-efficient projects.

POA Get a quote

90mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

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90mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

90mm Mannok PIR Insulation Board is an excellent choice for anyone looking for a high-performance insulation solution that provides superior thermal efficiency. It is ideal for use in any construction project, such as commercial and residential, in wall applications as well as roofing and flooring applications.

POA Get a quote

90mm Recticel Eurothane GP PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

90mm Recticel Eurothane GP is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Recticel is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.

£41.16£49.39 Ex VATInc VAT
£14.29£17.15 Per M2 Add to cart

92.5mm Recticel Eurothane PL Insulated Plasterboard 2400mm x 1200mm (8′ x 4′) 2.88m2

92.5mm Recticel Eurothane PL Insulated Plasterboard 2400mm x 1200mm (8′ x 4′) 2.88m2

92.5mm Recticel Eurothane PL pairs high-performance insulation with plasterboard, making homes warmer with a sleek, easy-fit design.

£79.12£94.94 Ex VATInc VAT
£27.47£32.96 Per M2 Add to cart

125mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

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125mm Mannok PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2

125mm Mannok PIR Insulation Board is an excellent choice for anyone looking for a high-performance insulation solution that provides superior thermal efficiency. It is ideal for use in any construction project, such as commercial and residential, in wall applications as well as roofing and flooring applications.

POA Get a quote