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Fire Retardant MDF

Thoroughly tested medium density fibreboard panels for use in public buildings where fire retardant panels are required by building regulations.

Fire Retardant MDF is suitable for use in internal dry conditions for non-structural applications; ideal for applications such as wall linings, partitions, display panels and so on.

The product is available in a range of thicknesses with either a Euroclass B or C fore rating in accordance with European Standards. The boards also carries 60 minute (Euroclass B) and 30 minute (Euroclass C) fire ratings under BS 476: Part 22: 1987 for use as an internal wall partition.

Typical Applications
  • Public buildings
  • Exhibitions
  • Wall Linings
  • Partitions
  • Display Panels
  • Ceilings
Applicable Standards
  • EN ISO 11925 – Ignitability test.
  • BS EN 13501-1 – Single Burning Item Test.
  • BS EN BS 476: Part 22: 1987 – Fire rating when used as partition walls.
  • BS EN 622-1 – Fibreboards Specifications: General Requirements
  • BS EN 622-5 – Fibreboards Specifications: Requirements for Dry Process Boards (MDF)
  • European Class B/C Fire Ratings
Environment

Hanson Plywood sources its collection of Fire Retardant MDF Panels from FSC® & PEFC™ Certified forest concessions. The company’s robust Chain of Custody management system ensures that these certifications are respected and adhered to throughout the supply chain. For further information, please refer to our Environment Page.

The panels also emit extremely low levels of formaldehyde and can be purchased as CARB Phase 2 compliant. This means the product’s emission level is tested by the California Air Resource Board to meet a permissible level lower than that which is dictated by the European Standards (E1 under EN 717-2).

Quick Reference Guide – Fire Ratings

A question we are frequently asked is which fire rated panel will provide 30 minute or 60 minute fire resistance. The answer of course is not straight forward and although fire rated panels can be used as part of a fire barrier system, such as partitions, the finished design requires additional independent testing to achieve such a rating.

Since the introduction of the Construction Products Regulation (CPR) Fire retardant panels are tested against EN13823:2002 (SBI or Single Burning Item Test) and EN11925 (Ignitability Test) and given a rating against their performance.

SBI is the key test and records parameters relating to the rate of fire growth, lateral flame spread, heat release and smoke emission.

There are seven Euroclass Classifications for fire performance of different construction materials ranging from A1 and A2 through to F. Classifications for wood based panel products such as Plywood, MDF and Chipboard include B, C, D and E. Euroclasses D and E relate to untreated material.

Class
Performance Description
Fire Scenario
Heat Attack
Examples of Products
A1
No contribution to fire
Fully developed fire in a room
At least 60kW/m2
Products of natural stone concrete, bricks, ceramic, glass, steel and many metallic products
A2
No contribution to fire
Fully developed fire in a room
At least 60kW/m2
Products similar to those of class A1, including small amounts of organic compounds
B
Very limited contribution to fire
Single burning item in a room
40kW/m2 on a limited area
Gypsum boards with different (thin) surface linings. Fire retardant wood-based panel products
C
Limited contribution to fire
Single burning item in a room
40kW/m2 on a limited area
Phenolic foam, gypsum boards with different surface linings. Flame retardant wood-based panel products (thicker than in class B)
D
Acceptable contribution to fire
Single burning item in a room
40kW/m2 on a limited area
Wood-based panel products with thickness > about 10mm and density > about 400kg/m3 (depending on end use)
E
Acceptable contribution to fire
Small flame attack
Flame height 20mm
Low density fibreboard, plastic based insulation products
F
No performance requirements
Small flame attack
Flame height 20mm
Products not tested (no requirements)
Quick Reference Guide - MDF

Please note: Under EN 622-5, ‘General Purpose’ refers to products suitable for ‘use in non load-bearing applications’.

Trade Term
Class
Typical Average Density
Application & Climatic Condition
Use Class (EN 335)
General purpose joinery
Simple designs with minimal profile
Humid Conditions
Architectural mouldings - skirting architraves
Deep routed profiles (e.g. membrane pressed PVC doors)
Designs with advanced deep routed profiles and painted finishes
Standard
MDF
700 Kg/m3
General purpose boards for dry conditions
Use Class 1
Yes
Yes
Yes
Trade
L.MDF
625 Kg/m3
Light MDF boards for dry conditions
Use Class 1
Yes
Yes
Ultralight
UL2.MDF
520 Kg/m3
Ultra-light MDF boards for dry conditions
Use Class 1
Yes
Yes
Moisture Resistant
MDF.H
720 Kg/m3
General purpose boards for humid conditions
Use Classes 1 & 2
Yes
Yes
Yes
Yes
Exterior
MDF.H-2
770 Kg/m3
General purpose boards for exterior conditions
Use Classes 1,2 & 3
Yes
Yes
Yes
Yes
Yes
Yes
Size
6mm
9mm
12mm
15mm
18mm
25mm
Grade
B
C
B
C
B
C
B
C
B
C
B
C
2440mm x 1220mm
3050mm x 1220mm
Want to know more about Fire Retardant MDF? Simply fill out our Quick enquiry form or call us on 01422 330 444