As market-leaders in Phenolic Insulation, Kingspan's expertise shines through in their products. As can be seen in Kingspan Kooltherm K118 insulated plasterboard's specifications: Installation – Reduced installation time. Kingspan Kooltherm K118 is an all-in-one product comprised of both insulation and plasterboard. It is often cheaper and quicker to buy an all-in-one product.Precise application – Kooltherm K118 boards are 2400mm by 1200mm. These are standard dimensions that will suit most insulation needs. Drylining is in-built into the board, which makes for more precise applications. When you buy Kingspan K118 boards, you can rest assured that the pieces of the product have been bonded together in accordance with strict industry guidelines.Thermal performance – K118 insulation boards have a phenolic core. Phenolic has a thermal conductivity of 0.018 W/mK, which is the best thermal performance of any insulation in the UK.Moisture resistant – These boards have a reverse composite foil facing on one side. This facing delivers effective vapour control. It is important to remember that the boards as a whole cannot handle large downpours. You can improve the vapour-resistant properties of Kingspan plasterboards by applying two coats of Gyproc Drywall Sealer.