Kingspan K118
The rigid Kingspan K118 insulated board enhances thermal insulation and moisture control in a range of building spaces.
What is K118 Insulated Plasterboard?
K118 insulated plasterboard is an insulated composite panel designed for thermal insulation, vapour control, and drylining. It features an insulated phenolic core bonded to plasterboard on the front and composite foil on the back.
What is K118 Insulated Plasterboard Used for?
You can use Kooltherm K118 in several ways:
- To insulate walls and ceilings.
- As drylining in solid masonry wall refurbishment.
- For vapour control. The foil facing on the K118 panel functions as a vapour control layer (VCL), reducing condensation buildup and preventing mould.
- For moisture management. Kingspan K118 is a closed-cell insulation material that helps prevent moisture from becoming trapped within the wall.
Benefits of K118 Kingspan
Some benefits of using the K118 Kingspan board include:
- The panel has low thermal conductivity, which helps spaces remain warm in cold weather and cool in hot weather.
- The Kingspan K118 insulated plasterboard can help you achieve the target U-value for your building.
- It’s a multipurpose insulation board with vapour control and drylining features.
- It increases thermal resistance, resulting in a high R-value.
- It’s versatile and suitable for multiple applications.
- It reduces both material and labour costs when used as a 3-in-1 solution for insulation, drylining, and moisture control.
Why Choose our Kooltherm K118?
Here’s why you should buy K118 Kooltherm from Insulation Wholesale:
- Premium performance at competitive prices – K118 offers one of the best lambda values on the market (0.018 W/m·K). This means our customers get more insulation for less thickness and genuinely lower heating bills.
- Fast nationwide delivery & trade pricing – We stock all common sizes (2400 × 1200 mm in 27.5 mm, 37.5 mm, 42.5 mm, 52.5 mm, 62.5 mm, etc.), and offer next-day delivery across the UK.
- Expert advice & pack calculators – Our team is always ready to work out exactly how many boards you need and recommend the right adhesive/fixings so you don’t over-order or run short.
Need reliable insulated plasterboard for Internal Wall Insulation (IWI)? Insulation Wholesale makes the Kooltherm K118 board purchasing process flawless.
FAQ
How to install Kingspan K118?
Kingspan offers comprehensive installation guidelines for different Kooltherm K118 applications. Refer to the user manual (also available on the Kingspan website) for instructions on installing K118 insulation in the specific area where you’re installing it.
What is K118 insulation?
K118 insulation is an insulated plasterboard from Kingspan that features three distinct inbuilt components: an insulated core, low-emissivity foil for vapour control, and a gypsum-based plasterboard. You can use it to enhance thermal insulation and moisture control in a given space, and it also serves as drylining for walls and ceilings
Showing all 6 results
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37.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm Pack of 21 (60.48m2)
25mm + 12.5mm Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance insulation with a fibre-free rigid thermoset phenolic core. It is an insulated plasterboard for mechanically fixed and adhesively bonded insulated dry-lining th a thermal conductivity of just 0.019 W/mK across all thicknesses.
£1,266.49£1,519.79 Ex VATInc VAT£20.94£25.13 Per M2 Add to cart -
42.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm Pack of 18 (51.84m2)
30mm + 12.5mm Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance insulation with a fibre-free rigid thermoset phenolic core. It is an insulated plasterboard for mechanically fixed and adhesively bonded insulated dry-lining th a thermal conductivity of just 0.019 W/mK across all thicknesses.
£1,119.35£1,343.22 Ex VATInc VAT£21.59£25.91 Per M2 Add to cart -
52.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm Pack of 15 (43.20m2)
40mm + 12.5mm Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance insulation with a fibre-free rigid thermoset phenolic core. It is an insulated plasterboard for mechanically fixed and adhesively bonded insulated dry-lining th a thermal conductivity of just 0.019 W/mK across all thicknesses.
£988.30£1,185.96 Ex VATInc VAT£22.88£27.46 Per M2 Add to cart -
57.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm Pack of 14 (40.32m2)
45mm + 12.5mm Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance insulation with a fibre-free rigid thermoset phenolic core. It is an insulated plasterboard for mechanically fixed and adhesively bonded insulated dry-lining th a thermal conductivity of just 0.019 W/mK across all thicknesses.
£987.69£1,185.23 Ex VATInc VAT£24.50£29.40 Per M2 Add to cart -
62.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm Pack of 12 (34.56m2)
50mm + 12.5mm Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance insulation with a fibre-free rigid thermoset phenolic core. It is an insulated plasterboard for mechanically fixed and adhesively bonded insulated dry-lining th a thermal conductivity of just 0.019 W/mK across all thicknesses.
£901.70£1,082.04 Ex VATInc VAT£26.09£31.31 Per M2 Add to cart -
72.5mm Kingspan Kooltherm K118 Insulated Plasterboard 2400mm x 1200mm Pack of 11 (31.68m2)
60mm + 12.5mm Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance insulation with a fibre-free rigid thermoset phenolic core. It is an insulated plasterboard for mechanically fixed and adhesively bonded insulated dry-lining th a thermal conductivity of just 0.019 W/mK across all thicknesses.
£869.23£1,043.08 Ex VATInc VAT£27.44£32.93 Per M2 Add to cart



