80mm Unilin Thin-R XT/CWP Cavity Wall Plus (T&G) represents a sophisticated building solution engineered to deliver exceptional thermal performance whilst preserving a residual cavity in conventional Partial Fill masonry construction. This advanced 80mm cavity wall insulation board features precision-engineered tongue and grooved joints alongside pre-formed corner elements, guaranteeing continuous insulation performance and substantially reducing thermal bridging effects.
Delivering outstanding thermal characteristics, 80mm Unilin XT/CW Plus Cavity Wall (T&G) provides an exemplary solution for achieving superior thermal efficiency across construction applications. The system affords robust protection from wind-driven moisture penetration, safeguarding structural integrity and durability. Featuring an impressive Lambda value of 0.021 W/mK, this product substantially enhances U-Values and satisfies Future Homes standards requirements. Consequently, 80mm Cavity Wall Plus (T&G) represents an excellent selection for passive house and low-energy building projects, facilitating sustainable, energy-efficient construction methodologies.
Brand: Unilin
Model: 80mm Cavity Wall Plus (T&G)
Weight: 7.50kg
Length: 1200mm
Width: 450mm
Dimensions: 1,200mm x 450mm x 80mm
Board Coverage: 0.54m2
Pack Coverage: 2.70m2
Pack Quantity: Pack of 5
R-Value: 2.35 m2K/W
Thermal Conductivity: 0.022 W/mk
MPN: 80mm XT/CW S.E Cavity
Density: 30Kg/m3
Material: Premium PIR insulation
Inner facing: Foil facing
Outer facing: Foil facing
Profile: T&G (tongue and groove)
Vapour Resistivity: 100 MNs/gm
Shipping method: Articulated Vehicle ǀ Courier
Applications: Cavity Wall Insulation
Cavity Width: Recommended residual cavity width allowed is 80mm
BBA Certified: Yes (No. 08/4613)
Features: Lightweight ǀ Easy to handle and install
The 80mm Unilin Thin-R XT/CWP Cavity Wall Plus (T&G) Insulation delivers dependable, high-performance polyisocyanurate (PIR) rigid insulation featuring precision tongue and groove jointing and low emissivity foil facings. Specifically formulated for traditional masonry partial fill cavity walls, this insulation system excels at satisfying rigorous thermal requirements whilst maintaining a residual cavity, delivering outstanding protection against wind-driven moisture ingress.
The remarkably low Lambda value of 0.021 W/mK produces superior U-Values, meeting Zero Carbon compliance standards and making it an optimal choice for passive house and low-energy construction schemes. This engineered system incorporates tongue and groove joints and pre-formed corner components, delivering flawless insulation performance and minimizing thermal bridging, resulting in a highly efficient, thermally optimized building envelope.
Browse our comprehensive Unilin range and refine selections by thickness or coverage using the left-hand filters. For technical advice regarding product suitability on your specific project, or to request a volume discount quotation, contact us via telephone on +4402038839057, email sales@insulationbee, or use our Live Chat service - Lowest UK Insulation Prices.










