Kingspan K118 Insulated Plasterboard

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Kingspan K118

At Insulation Board, we provide the best prices on Kingspan K118 Insulated Plasterboard. We stock all sizes and ensure a speedy delivery turn around. We at Insulation Board are the UK’s number one provider of insulation products, you can have peace of mind when you order online with us. We have taken measures to ensure your online ordering process is as hassle free and quick as possible.

Kingspan K118 Insulated Plasterboards are made up off a Premium performance rigid thermoset phenolic insulated plasterboard adhesively bonded to a 12.5mm dry lining board. The boards are manufactured with low global warming potential (GWP) and zero ozone depletion potential (ODP). When installed correctly the K118 boards will have a lifespan that lasts for as long as the building does with performance that does not falter.

Each Kingspan Insulated Plasterboard is 2400mm by 1200mm and comes in a range of thicknesses from 32.5mm to 92.5mm (including 12.5mm plasterboard) with a coverage of 2.88m² per board. K118 boards have an incredible thermal conductivity of 0.019W/mK. K118 Insulated plasterboards can be installed in a variety of applications including pitched roofs, masonry walls, and flat roofs.

The 2-in1 product saves time and money by combining the two materials into one. The boards combine an insulation board thickness from 20mm and 80mm with a plasterboard of 12.5mm. For example, 50mm insulation + 12.5mm plasterboard = 62.5mm Insulated Plasterboard.
See each board thickness and their thermal resistance below.

K118 32.5mm (20+12.5)1.15 m2K/W
K118 37.5mm (25+12.5)1.45 m2K/W
K118 42.5mm (30+12.5)1.70 m2K/W
K118 52.5mm (40+12.5)2.25 m2K/W
K118 57.5mm (45+12.5)2.55 m2K/W
K118 62.5mm (50+12.5)2.80 m2K/W
K118 72.5mm (60+12.5)3.35 m2K/W
K118 82.5mm (70+12.5)3.95 m2K/W
K118 92.5mm (80+12.5)4.50 m2K/W

Kingspan K118 Alternative
If you’re looking for an alternative product to K118, Insulation Board stock Celotex PL4000 Insulated plasterboard. The Celotex PL4000 unlike Kingspan, does not contain a phenolic core. The Celotex insulation board has a polyisocyanurate (PIR) core.
Each board is 2400mm by 1200mm with a coverage of 2.88m2 and a thermal conductivity of 0.022W/mK. See a link to Celotex PL4000 insulated plasterboards. Please read product datasheets before using alternative products to ensure regulation are met.
Our Kingspan K118 Insulated plasterboard is a high-quality premium product. Available in a variety of thicknesses designed for multiple applications including both commercial and residential, new, or retrofit buildings. K118 has high-quality thermal properties, helping to create an environment meaning level temperatures with warmer winters and cooler summers. The
more heat you prevent from escaping the building, the more money you will save on energy bills! Up to 30% of energy bills can be saved by installed the correct insulation into your residential or commercial building. Preventing heat loss can also have positive impacts on climate change by reducing global warming impacted by our heating every year.

K118 Certifications:

Standard To BS EN 13950
Fire performance To Euroclass RtF B-s1, d0 to BS EN 13501-1:2018.
British Board of Agreement (BBA) Certification 14/5133 – confirm
Recycled Content 0.75%

How to cut Kingspan K118 Insulation Boards

The boards should be measured and marked to size and cut using a fine-toothed saw. Cutting the board on a high flat surface will give room for the saw to go through the board. The board can also be cut by scoring one side of the board with a sharp knife and snapping over a hard edge. The other side of the board can then be scored.

Kingspan K118 Installation

Step 1:
Fix timber battens at the floor and ceiling around the room’s perimeter. Then fix further battens to the wall and around any openings or surfaces. Fix each batten approximately 75mm from its end and no more than 600mm horizontal centres.
Each batten should have a minimum depth of 25mm and width of 47mm and be backed with a strip of a damp-proof course.
Step 2:
The installation should start from an internal corner, a window or a door reveal.
Insulated plasterboard sheets should always lap the timber battens at the sheet joints. Note the timber noggins may be required where sheets of insulated plasterboard are unsupported.
Ensure each sheet is lightly butted with fixings located no less than 10mm from the bound edges of the sheet. Cut the insulated plasterboard approximately 5mm short of the floor to ceiling height.
Step 3:
Fix the sheet with either drywall screws at 300mm centres or large headed galvanized clout nails at 150mm centres. Fixing should be long enough to allow a minimum penetration into the timber batten or frame.
Drive all fixings straight, with heads embedded just below the surface of the plasterboard.
To finish seal the perimeter of the insulated plasterboard with a flexible sealant or equivalent.
Regardless of the method used, additional consideration should also be given for the fixings of cupboards and radiators etc.

What is the thinnest Insulated Plasterboard?

The thinnest insulated plasterboard in the Kingspan K118 range is 32.5mm (20mm insulation +12.5mm plasterboard). The thinner boards have great thermal conductivity without taking up too much space from the room.

What is the best way to insulate a single brick wall?

Homes with brickwork are more likely to use internal wall insulation on a single brick wall by inserting the insulation between the brick and plasterboard layer of that wall. You'll need a stud wall and insulation boards or rolls. Alternatively, you can use insulated plasterboards like K118 for a quicker and easier process that can save you money.

What is Phenolic insulation?

Phenolic insulation is the most thermally efficient insulation commonly used by Kingspan. It is made through a manufacturing process where a rigid thermoset foam forms an insulating core between two facing elements, for example, a low emissivity composite foil or glass tissue.