Kingspan Thermapitch TP10 125mm Roof Board

The 125mm Thermapitch TP10 is a high-performance PIR insulation board engineered for pitched roofs with slate or tile coverings. Ideal for both new construction and retrofit applications, this insulation board offers straightforward installation with excellent thermal performance and durability.

The 125mm Kingspan TP10 delivers superior thermal efficiency for pitched roof and attic spaces, enabling effective loft conversions and renovation work. It significantly reduces heat loss through the roof structure, contributing to lower energy consumption. The product resists sagging and meets Robust Details requirements for Part E of the Building Regulations across England and Wales.

Properties

Brand: Kingspan

Thickness: 125mm

Length: 2400mm

Width: 1200mm

Model: 125mm Thermapitch TP10

Dimensions: 2,400mm x 1,200mm x 125mm

Compressive Strength: The compressive strength typically exceeds 140 kPa at 10% compression.

Density: 32 Kg/m3

Length: 2400mm

Material: Polyisocyanurate (Kingspan PIR Insulation)

R-Value: 5.65 m2K/W

Size: 1200mm x 2400mm

Thermal Conductivity: 0.022 W/mk

Finish: 125mm TP10 is faced on both sides with a low emissivity composite foil, autohesively bonded to the insulation core during manufacture.

Applications: Tiled or Slated Pitched Warm Roof

Fire Resistance: Under System 4 AVCP, 125mm Thermapitch TP10 has a Euroclass rating of F.

Water vapour resistance: 110 MNs/g

BBA Certified: Yes, No. 14/5133

Features: Improves the Thermal Resistance

Application Options

1. Suitable for new builds or re-roofing projects, functioning as unventilated insulation positioned between and beneath rafters.
2. For loft insulation conversion schemes, recommended as ventilated insulation installed between and under rafters.
3. 125mm Kingspan insulation works effectively as unventilated insulation between and over rafters in new construction or re-roofing scenarios.

The Facings

During manufacture, Kingspan 125mm PIR receives a low emissivity composite foil facing on both surfaces, which acts as a reflective barrier to boost the thermal resistance of any unventilated cavity adjacent to the board.

The Core

125mm Kingspan Thermapitch TP10 utilises Nilflam® technology, delivering a premium fiber-free rigid thermoset polyisocyanurate (PIR) core. The production process employs a blowing agent with zero Ozone Depletion Potential (ODP) and minimal Global Warming Potential (GWP).

Compressive Strength

Tested to BS EN 826:2013 (Thermal insulating products for building applications. Determination of compression behavior), 125mm Kingspan PIR insulation typically achieves compressive strength exceeding 140 kPa at 10% compression.

Water vapour resistance

In accordance with BS EN 12086:2013 (Thermal insulating products for building applications. Determination of water vapor transmission properties), the product generally demonstrates water vapour resistance well above 100 MNs/g.

Durability

The service life of 125mm TP10 depends on correct installation, adequate structural support, and appropriate usage conditions. When properly installed, the product can deliver an extended operational lifespan.

Fire performance

125mm Kingspan Insulation TP10 achieves an F Euroclass rating under System 4 AVCP. When installed in pitched roof assemblies beneath appropriate roof coverings, it satisfies national standards for external fire exposure.

Info

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