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Insulate Thermal Deck Board – Premium x Pack of 36 (12.74 Sqm) Insulated Walk-on Loft Boards

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(incl VAT) £592.91 £538.92
-10%
(excl VAT) £449.10
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Estimated Delivery Date Jul 30, 2026 - Aug 04, 2026
No deliveries on weekends or holidays.
Every Order Plants 1 Tree and Protects 10 Existing Ones
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Product Details

Range Length Width Total Thickness Pack Size Coverage
Eco  1190mm 295mm 66mm Pack of 4 1.4 Sqm
Eco 1190mm 295mm 66mm Pack of 36 12.64 Sqm
Eco 1190mm 295mm 66mm Pack of 72 25.28 Sqm
           
Premium 1190mm 295mm 91mm Pack of 4 1.4 Sqm
Premium 1190mm 295mm 91mm Pack of 36 12.74 Sqm
Premium 1190mm 295mm 91mm Pack of 72 25.48Sqm

Product Range: Premium And. Eco

The system is available in two distinct variations to accommodate different insulation depths, performance requirements, and budget targets.

Feature Premium Range Eco Range
Thermal Performance Achieves a superior U-value of 0.38 W/m²K  Achieves a standard U-value of 0.54 W/m²K
Jointing System Integrated connecting spline for a seamless, continuous thermal fit Butt-jointed profile
Required Rafter Base Needs only 100mm (4”) of baseline rockwool to hit a total 0.18 U-value Needs 130mm (5”) of baseline rockwool to hit a total 0.18 U-value
Installation  Maximum airtightness and fastest alignment out of the box Optimised for flexible on-site trimming and cost-effective jointing

The Insulate Thermal Deck Board is an innovative, all-in-one structural insulation panel designed to create a safe, fully walk-on loft floor and storage platform. Manufactured as a Structural Insulated Panel (SIP), it combines insulation and boarding into a single step, eliminating the need for tedious manual framing systems like jacks, spacers, or brackets. It is an ideal energy-saving upgrade for residential attics, particularly where tight access or installation time is limited.

Key Features

  • SIP Panel Structure: Built with high-strength, moisture-resistant Type 3 Oriented Strand Board (OSB/3) facings on both sides.
  • High-Performance Core: Utilises Stylite Plustherm Grey Expanded Polystyrene (EPS) for optimal thermal insulation.
  • Draft-Proof Jointing: Engineered to slot together seamlessly, enhancing airtightness and energy efficiency.
  • Multi-Application Versatility: Primarily built for lofts, it can also be configured as a strong walk-on warm roof deck for flat extensions.
  • UK-Made Quality: Fully designed and manufactured in the UK.

Core Benefits

  • Boosts EPC Ratings: Significantly improves your home’s Energy Performance Certificate (EPC) ratings by lowering the roof component's U-value.
  • Maximises Attic Storage: Creates a sturdy, safe walk-on platform capable of handling domestic storage demands.
  • Rapid Installation: Slats together with precision, completely removing the need for on-site taping or sealing.
  • No Squashed Insulation: Avoids the standard thermal performance drops caused by compressing traditional glass wool down into the joists.

Applications

  • Loft Storage Floors: Converts empty attic spaces into a solid, fully walk-on platform for household storage.
  • Maintenance Walkways: Creates safe, structural pathways from the loft hatch to boilers, solar inverters, or water tanks.
  • Flat Roof Extensions: Functions as a heavy-duty, load-bearing "Warm Roof" deck on home extensions or garages, ready for waterproof coatings.
  • Fast-Track Building Projects: Used by professional contractors in tight spaces to install insulation and flooring simultaneously, saving hours on-site.

 

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