Unilin FR/TP Plydeck 74mm Flat Roof Insulation

74mm Unilin FR/TP Plydeck Thermal OSB is a composite insulated panel that merges polyisocyanurate core technology with a composite foil face, securely bonded to 9mm OSB Board. This engineered solution delivers superior thermal performance and decking capability in one integrated product, making it particularly suitable for new construction and flat roof renovation schemes.

Product Specification

Brand: Unilin / Xtratherm®

Model: 74mm OSB

Thickness: 65mm PIR Insulation + 9mm OSB board - 74mm overall

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 74mm

Board Coverage: 2.88m2

Weight: 28.60kg

Compressive Strength: 150 kPa

R-Value: 2.96m2K/W

Thermal Conductivity: 0.022 W/mk

Density: 32 Kg/m3

Material: Polyisocyanurate PIR ǀ OSB

Vapour Resistivity: 100 MNs/gm

Finish: Aluminium foil face ǀ OSB reverse face

Applications: Flat Roof ǀ Hot Bitumen ǀ Decking

Features: Highly-durable three-in-one solution

Important Features:

1. Exceptional Performance in PIR Rigid Insulation
2. Thermal Conductivity of 0.022W/mK
3. Provides Insulation and Decking in a Single Installation
4. Compatible with a Wide Range of Waterproofing Systems
5. Composed of Non-deleterious Materials
6. Manufactured Without the Use of CFCs/HCFCs
7. Zero Ozone Depletion Potential (ODP) and Low Global Warming Potential (GWP)
8. Suitable for both New Build and Refurbishment Projects

74mm Unilin Plydeck comes with the following characteristics:

1. Gas-tight foil membrane: The underside of Unilin Plydeck features a gas-tight foil membrane, providing a dependable moisture barrier.
2. Continuous vapour control layer: When installed onto a mastic bed, the panel establishes a continuous vapour control layer that effectively regulates moisture transfer.
3. Water-resistant: Unilin Plydeck resists water absorption, making it well-suited for applications in moisture-prone environments.
4. Low thermal conductivity: The insulation core exhibits low thermal conductivity, enabling thinner board profiles without sacrificing thermal efficiency.
5. Rapid coverage and straightforward installation: The composite board structure facilitates quick installation and broad coverage rates.
6. Enhanced thermal performance: For optimised roof insulation, additional Unilin layers can be incorporated between joists or applied over joists to minimise material depth.
7. Durability: Unilin Plydeck is engineered for the complete service life of the building structure, delivering consistent long-term performance.
8. Lightweight and robust: The material combines light weight with structural strength, facilitating straightforward handling on site and allowing modification with standard saws or sharp blades.

Roof Design

Consideration should be given to the recommendations of BS 4841: Part 3 and the certification of the chosen membrane manufacturer.

Falls

The fall on a flat roof should be constant and steep enough to ensure that rainfall does not pond.

Info

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