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80mm Celotex GA4080 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) 2.88m2
80mm Celotex GA4080 is a polyisocyanurate (PIR) insulation core with composite aluminium foil facings on both sides. Celotex is a multi-purpose insulation board suitable for use in pitched roofs, ceilings, floors and walls.
£38.60£46.32 Ex VATInc VAT£13.40£16.08 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 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.
£38.78£46.54 Ex VATInc VAT£13.47£16.16 Per M2 Add to cart -
80mm Jablite HP+ 70E External Wall Insulation Board 1200mm x 600mm (4′ X 2′) Pack of 7 (5.04m2)
80mm Jablite HP+ 70E External Wall Insulation Board is designed to enhance thermal efficiency for external walls. It can be bonded or mechanically fixed, providing reliable insulation solution.
£50.95£61.14 Ex VATInc VAT£10.11£12.13 Per M2 Add to cart -
80mm Kingspan GreenGuard GG300 R Rigid Extruded Polystyrene Insulation Board 1250mm x 600mm Pack of 5 (3.75m2)
80mm Kingspan GreenGuard GG300 is a high performance rigid extruded polystyrene insulation. It is used to insulate inverted roofs, basements, car park decks, and heavy-duty commercial, industrial and cold store flooring offering a thermal conductivities as low as 0.033 W/m·K
£64.89£77.87 Ex VATInc VAT£17.30£20.76 Per M2 Add to cart -
80mm Kingspan Kooltherm K107 Pitched Roof Board 2400mm x 1200mm Pack of 4 (11.52m2)
80mm Kingspan Kooltherm K107 Pitched Roof Board is a premium performance insulation with a fibre-free rigid thermoset phenolic core. It is used to insulate pitched roofs and attic spaces, and has a thermal conductivity of just 0.019 W/m.K across all thicknesses.
£360.47£432.56 Ex VATInc VAT£31.29£37.55 Per M2 Add to cart -
80mm Kingspan Kooltherm K112 Framing Insulation Board 2400mm x 1200mm Pack of 4 (11.52m2)
80mm Kingspan Kooltherm K112 Framing Board is a premium performance insulation with a fibre-free rigid thermoset phenolic core. It is used to insulate timber and steel framing systems with thermal conductivity of just 0.019 W/mK across all thicknesses.
£451.02£541.22 Ex VATInc VAT£39.15£46.98 Per M2 Add to cart -
80mm Kingspan Thermaroof TR24 Flat Roof PIR Insulation Board 1200mm x 600mm Pack of 6 (4.32m2)
80mm Kingspan Thermaroof TR24 is a high performance insulation with a fibre-free rigid thermoset polyisocyanurate (PIR) core. Kingspan Thermaroof is suitable for flat roofs waterproofed with partially bonded torch applied multi-layer bituminous waterproofing.
£189.02£226.82 Ex VATInc VAT£43.75£52.50 Per M2 Add to cart -
80mm Kingspan Thermaroof TR26 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 4 (11.52m2)
80mm Kingspan TR26 Thermaroof is high-performance insulation that has a fiber-free rigid thermoset polyisocyanurate (PIR) core. Suitable for flat roof application waterproofed with mechanically fixed single-ply waterproofing.
£285.31£342.37 Ex VATInc VAT£24.77£29.72 Per M2 Add to cart -
80mm Kingspan Thermaroof TR27 PIR Insulation Board 1200mm x 1200mm Pack of 4 (5.76m2)
80mm Kingspan Thermaroof TR27 is a high performance insulation with a fibre-free rigid thermoset polyisocyanurate (PIR) core. It is used to insulate flat roofs waterproofed with fully adhered single-ply, partially bonded built-up felt, mastic asphalt and cold liquid applied waterproofing.
£157.95£189.54 Ex VATInc VAT£27.42£32.90 Per Sheet Add to cart -
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.
£37.29£44.75 Ex VATInc VAT£12.95£15.54 Per M2 Add to cart -
80mm Unilin Safe-R SR/PR Pitched Roof Phenolic Insulation Board 2400mm x 1200mm (8′ x 4′) Pallet of 28 (80.64m2)
80mm Unilin Safe-R Pitched Roof SR/PR provides top-tier thermal efficiency for sloped roofs, including ventilated, hybrid, and warm setups, ensuring excellent U-values with minimal impact on living space.
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80mm Insulation Board
An 80mm insulation board is a rigid thermal insulation used to reduce heat transfer through a building. This thickness is preferred when a project needs strong thermal control without jumping up to significantly thicker insulation systems. It is thick enough to make a meaningful difference, but still manageable to handle, fix, and detail on site.
What is 80mm thick insulation board?
An 80mm thick insulation board is a factory-manufactured rigid panel with a nominal thickness of 80mm across its full area. It works by trapping still air or low-conductivity gas within its structure, which restricts heat transfer through the wall, roof, or floor.
Because it is rigid, it keeps its shape once installed, helping to minimise gaps, sagging, and compression – all of which reduce performance.
These boards are commonly installed where energy targets are tighter, but space is limited – like refurbishments or upgraded new builds.
What is 80mm thick insulation board used for?
An 80mm insulation thickness board is used wherever heat loss needs to be controlled reliably through the building fabric. Its most common uses include:
- Internal wall upgrades where stud depth allows for thicker insulation
- Warm flat roof build-ups that require higher thermal resistance
- Pitched roofs between or over rafters, where permitted by the roof design
- Solid floors where insulation sits above or below the slab
It is usually selected when thinner boards do not meet the target U-value on their own.
Types of insulation 80mm board
Insulation Wholesale stocks 80mm insulation boards in these categories:
EPS Insulation (Expanded Polystyrene)
EPS insulates using trapped air. It is often chosen for floors or areas where cost efficiency is prioritised over maximum thermal performance.
XPS insulation (Extruded Polystyrene)
XPS is stronger under load and highly resistant to moisture. It is common in floors and inverted roofs.
Phenolic Insulation Foam Board
Phenolic foam offers very high thermal resistance relative to its thickness. It is often installed in tight spaces that demand high performance.
PIR Insulation (Polyisocyanurate)
PIR insulation boards are widely used on walls, roofs, and floors. An 80mm PIR insulation board – like the Kingspan 80mm insulation board – gives strong thermal performance and is easy to handle.
Insulation 80mm thickness board benefits
An insulation 80mm thickness board delivers several advantages, including:
- Strong reduction in heat loss
- Consistent thickness across the full area
- Faster installation compared to layered systems
- Predictable performance when installed correctly
- Works well with modern airtightness detailing
Why choose 80mm insulation boards from insulation wholesale?
Here is why our customers buy 80mm thick insulation boards online from Insulation Wholesale:
- We provide a straightforward, reliable purchasing process.
- We stock multiple durable boards from established manufacturers.
- Our team helps match products to site conditions.
- Our trade discounts and pallet deals keep large jobs cost-effective.
- We offer clear lead times with UK stock ready to move.
- Fast nationwide delivery direct to your site.
FAQ
Where to buy 80mm insulation board?
Get an 80mm rigid insulation board from Insulation Wholesale. We stock, supply, and deliver nationwide at competitive prices. Whether you are buying one pack or a full load, we will help you choose the right board for the job.
How to cut 80mm insulation board?
- Measure carefully and mark both faces.
- Use a fine-tooth saw or insulation knife.
- Support the board to prevent snapping.
- Keep cuts square to prevent gaps.
How good is 80mm insulation board?
The thermal performance of an insulation 80mm thick board is strong for most domestic and light commercial projects. The board significantly reduces heat loss and improves indoor comfort when used correctly. Its real value comes from pairing the right material with proper installation and sealing.
