Unilin Safe-R SR/TB-MF 112.5mm Phenolic Insulated Plasterboard

The 112.5mm Unilin Safe-R SR/TB-MF Phenolic Insulated Plasterboard is a high-performance composite panel combining a 100mm phenolic PIR insulation layer with composite foil facing. The foil is bonded to 12.5mm tapered edge plasterboard, making it ideal for internal walls, sloped roofs, and ceilings. The SR/TB panel is engineered for mechanical fixing applications and features a built-in vapor control layer on both sides to help prevent condensation issues. This product delivers thermal insulation and drylining in one step, making it a popular choice for new builds and renovation projects alike.

Product Details

Brand: Unilin

Model: 112.5mm SR/TB-MF

Thickness: 112.5mm

Dimensions: 2,400mm x 1,200mm x 112.50mm

Width: 1200mm

Length: 2400mm

Board Coverage: 2.88m2

Pack Coverage: 11.52 m2

Pack Quantity: 4

Material: Phenolic core ǀ Gypsum plasterboard

R-Value: 5.00 m2K/W

Thermal Conductivity: 0.020 – 0.021 – (0.023 Below 40mm) (W/mK) Phenolic only

Inner facing: Foil facing

Outer facing: Foil facing

Shipping method: Articulated Vehicle ǀ Courier

Applications: Internal Walls ǀ Roofs

BBA Certified: Yes (no. 10/4803)

Vapour Control Layer: Yes, build in

Reaction to fire: Euroclass B s1 d0

Fixing method: Adhesive bonding

Decoration: Skim plaster

ETA Notification: Yes

Features: Integral vapour barrier thermal-liner

Main Highlights

1. Three-in-one composite solution for complete performance.
2. Integrated vapor control layer prevents moisture buildup.
3. Fast installation and efficient thermal performance.
4. Combines insulation and drylining in a single board.
5. Achieves Euroclass B-s1 d0 fire safety rating.
6. Suitable for new construction, retrofitting, and renovation work.
7. Minimized insulation thickness without compromising performance.
8. Compatible with dot and dab fixing methods.
9. Exceptional low thermal conductivity at 0.020 W/mK.
10. Works with various wall substrates and finishes.
11. Standard 2400mm x 1200mm board dimensions.
12. Premium phenolic insulation core technology.
13. Single board provides insulation, drylining, and vapor barrier.
14. Simple to handle and install on site.

Integral Vapor Control Layer

The composite glass tissue facing on the 112.5mm SR/TB-MF acts as a gas and vapor impermeable barrier, significantly reducing condensation risk. When joints are properly sealed and taped following standard drylining practices, a continuous vapor control layer is created across the entire wall surface.

Fire Stops

When drylining any wall, fire stops must be installed at the top and bottom of each board, plus around all openings including doors and windows. These fire stops consist of continuous lines of adhesive that prevent fire from spreading behind the insulation. The unbroken adhesive lines also help eliminate thermal bridging, improving the overall U-Value performance of your wall assembly.

Handling, Cutting, and Storage

PIR insulation boards should be stored on a clean, level surface above ground level and protected from weather exposure. Polythene wrapping alone does not provide adequate outdoor protection. Take care to protect the insulation during storage and throughout construction. Always wear appropriate personal protective equipment (PPE) when handling insulation materials.

Info

Browse our full Unilin range and filter by thickness or coverage using the left-hand menu. For product suitability advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use our Live Chat service. We offer competitive insulation board pricing across the UK.