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Knauf GIFAFloor FHB Self-Supporting Gypsum Fibreboard - Structural Screed Board

Name: Knauf GIFAFloor FHB Self-Supporting Gypsum Fibreboard - Structural Screed Board
Brand: Access Floors Distribution
SKU: iwyiyrEuudN1MC5ceVKAYb

Verified by manufacturer 22 days ago

FHB 18 - Single-layer System

Access Floors Distribution

Product certifications:

EPD
Certificate type
Indoor Air Comfort – Eurofins
Certificate type

Load-bearing tongue & groove gypsum fibreboard screed panels, providing strong, non-combustible, sustainable flooring installed over spanning objects such as cradle & batten.

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BOS

01480 367096 Website

Application

The Knauf GIFAfloor FHB Self-Supporting System is suitable for a wide variety of commercial and residential applications where a robust, sustainable, and non-combustible flooring solution is required.

Typical Applications

Residential floor build-ups – delivering solid, stable, and safe flooring for apartments, houses, and multi-residential schemes.
Floating floor systems – compatible with spanning structures such as CLT, cradle & batten, or joists.
Acoustic flooring – high-density composition reduces airborne and impact sound transmission.
High-rise buildings – non-combustible A1 fire rating supports compliance with stringent regulations.
Office buildings & commercial spaces – capable of supporting heavy use with minimal maintenance.
Modular buildings – lightweight and quick to install, ideal for off-site construction projects.
Underfloor heating systems – excellent thermal conductivity enhances heating efficiency.
Finishes – suitable substrate for ceramics, porcelain, natural stone, micro cement, or other hard finishes, without the need for de-coupling layers.

This flexibility makes GIFAfloor an ideal choice for modern construction, where programme efficiency, fire safety, acoustic performance, and sustainability are equally important.

Description

The Knauf GIFAfloor FHB Self-Supporting System is a structural dry screed flooring solution designed to deliver strength, stability, and sustainability across a wide range of building applications.

Material Composition

Panels are manufactured from gypsum fibreboard, a blend of:

Wholly recycled paper fibres
Natural gypsum
Flue gas desulphurised (FGD) gypsum

This engineered composition creates a non-combustible A1-rated calcium sulphate panel with outstanding durability and environmental credentials.

Manufacturing Process

Produced through a controlled lamination and pressing process, GIFAfloor panels achieve optimum density for consistent quality and inherent strength. Engineered tongue-and-groove (T&G) edge profiles provide robust interlocking, creating a monolithic, load-bearing floor once installed.

Performance Benefits

Load-bearing capability suitable for structural flooring.
A1 non-combustible fire rating for compliance and safety.
High density & dimensional stability minimises movement.
Thermally transparent – excellent heat conductivity, ideal for underfloor heating.
Quick installation – walkable within hours, no drying time required.
Excellent acoustic performance due to high mass.
Suitable for hard finishes – natural stone, porcelain, ceramics, or micro cement can be applied directly.
Sustainability – manufactured from highly recycled content, with EPD certification, low embodied carbon, and 100% recyclability at end of life.
Indoor Air Quality Gold – Eurofins Certified.
Warranty – covered by a building lifetime warranty.

Advantages Over Traditional Systems

Compared to wet screeds or timber boards, GIFAfloor provides:

Faster programme times – no drying delays.
Improved environmental impact – reduced embodied carbon.
Greater structural reliability – inherent strength and stability.

Note on Raised Access Floors

While this product is optimised for self-supporting applications, a pedestal-based system is also available. Please refer to “Knauf GifaFloor FHB Hollow Floor System – Pedestals” on NBS for further details and installation guidance.

General information

Color	Grey Beige
Material	Fibre-reinforced Gypsum
Shape	Rectangle Square
Length	1200 mm 600 mm
Width	600 mm
Height	18 mm 25 mm 28 mm 32 mm 38 mm
Warranty description	Lifetime

Uniclass	Pr_25_71_35_30 Fibre-reinforced gypsum floorboardsPrimary
CAWS	K11/60 Board K11/15 Battened plywood floating floor K41/315 Floor panels K20/20 Battened timber board floating floor K11/20 Battened particleboard floating floor K41/315 Floor panels K21/130 Battened wood floating floor K11/295 Floating floor system K11/275 Acoustic separating floor system K11/125 Battened particleboard floating floor K11/115 Battened plywood floating floor K20/150 Battened timber board floating floor

Specification data - Fibre-reinforced gypsum floorboards

Classification data
Thickness	18 mm.
Edges	Tongued and grooved.
Panel size	1200 x 600 mm. Guidance for specification option: As standard.
Density	To EN 15283‑2, ≥1500 kg/m³.
Water vapour resistance	30/50 μ.
Strength	To EN 13892‑8, ≥1.0 N/mm². Manufacturer guidance Adhesive tensile strength.
Hardness	≥40 N/mm². Guidance for specification option: Internal specification. Manufacturer guidance Surface hardness (Brinell).
Water absorption	To EN 15283-2, ≤300 g/m².
Flexural strength	≥8.7 N/mm².
SpecificHeatCapacity	>1000 J/kg∙K.
ThermalConductivity	0.44 W/m·K. Guidance for specification option: In conjunction with underfloor heating systems 0.30 W/(mK) λ10.
Coefficient of thermal expansion	12.9∙10^-5 1/K.
Panel weight	29.01 kg/m². Guidance for specification option: 20.89 kg per 1200 x 600 mm panel.
Reaction to fire	To EN 13501‑1, A1 non-combustible.
Fire resistance	Refer to manufacturer. Guidance for specification option: Tested 1200 mm centres whilst 2 kN/m² was applied.
Impact sound reduction	Refer to manufacturer.
Accessories	GifaBond blue panel adhesive. Knauf Acoustic Isolating Strip. Knauf Acoustic Edge Strip. GifaFrame access frame. Guidance for specification option: Available in both 600 x 600 mm pre-made hatches or lengths of 3 m profile with corner fixings to make up the desired hatch space required. Consult manufacturer for details and insert requirements. None.

Sustainability data

Contains Red List materials	No
Country of material origin	Germany
Country of product manufacture	Germany
Manufacturing plant location	74 Satteldorf, Germany
Material	Fibre-reinforced Gypsum
Carbon dioxide equivalent
Carbon dioxide equivalent, as defined in BS EN 15804 Certified
Stage Normalised unit (kg CO₂ eq/kg) Declared unit (kg CO₂ eq/m²) Stage:A1–A3 ('Production stage') Normalised unit : Declared unit : 1.22 Lower emissions
Recyclability	100%
Expected Life	Lifetime