Unilin Thin-R TR/BGM 70-90mm Tapered Roof Board

70-90mm Unilin Thin-R TR/BGM Tapered Flat Roof Insulation Board is a high-performance polyisocyanurate tapered roof insulation solution with a polypropylene fleece finished bitumen/glass fibre working surface on one side and mineral glass facing on the other (non-reversible). Engineered specifically for integration with most bitumen-based partially bonded built-up roofing systems, this roof board delivers reliable thermal performance and durability.

Part of Unilin's comprehensive range of tapered roof insulation products, this board provides complete solutions for sloped roof applications. An Environmental Product Declaration (EPD), certified by the IGBC, is available upon request. Contact our technical team for detailed product information and specifications.

Product Specification

Range: 70-90mm TR/BGM

Thickness: 30-50mm, 50-70mm, 70-90mm, 90-110mm (1:60)

Length: 1200mm

Width: 1200mm

Board Size: 1200mm x 1200mm

Pack Size: 4 sheets

Pack Coverage: 5.76

Pack Weight: 12kg

Thermal conductivity: 0.024 – 0.027 (WmK)

Compressive Strength: >150 kPa @ 10% compression

Material: PIR

Inner facing Mineral Glass

Outer facing Bitumen/glass fibre

Application: Flat Roof insulation

Density (Foam Core): 32 kg/m3

Reaction to Fire: Euroclass E

Features & Benefits

1. Dimensions: 1200mm length x 1200mm width x 70-90mm thickness
2. Fall: 1:60
3. Suitable for refurbishment projects and new builds
4. Ideal for full bonding with an approved adhesive
5. Environmentally friendly: Zero Ozone Depletion Potential (ODP), Low Global Warming Potential (GWP), and non-deleterious materials
6. Compressive Strength: >150 kPa @ 10% compression
7. Compatible with adhesively bonded single ply roofing membranes installed on mechanically fixed boards
8. Each board covers an area of 1.44m²
9. This pack contains four boards, covering a total area of 5.76m²
10. Foam core density: 32kg/m³

Key Advantages

1. Adaptable for both renovation and new construction projects
2. Delivers excellent dimensional stability and long-term durability
3. Simple installation with full bonding using approved adhesives
4. Environmentally responsible product with zero ODP and low GWP
5. Meets non-deleterious materials requirements
6. Robust compressive strength resists structural loads and pressure
7. Works seamlessly with adhesively bonded single ply roofing membranes
8. Delivers efficient area coverage per board
9. Premium foam core with 32kg/m³ density ensures consistent performance

Vapour Control Layer

A vapour control layer should be lapped and sealed beneath the insulation board. For fully adhered systems, board joints require taping subject to the adhesive system specifications.

Bonded Board Installation

The insulation boards are embedded within a bitumen layer on 3G type felt to BS EN 13707: 2013 (Flexible sheets for waterproofing. Reinforced bitumen sheets for roof waterproofing adhered to the deck). Unilin recommends all systems include mechanical fixings or be secured using appropriate adhesive products.

Info

Explore our complete Unilin insulation range and refine by thickness or coverage area using the left-hand filters. For project-specific guidance, product suitability advice, or bulk quotations, contact us by phone on +4402038839057, email sales@insulationbee, or use our Live Chat service for competitive Insulation pricing.