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Fire Retardant Birch Plywood

Treated Birch Plywood meeting the requirements of Euro Class B. Suitable for structural applications.

Individual birch veneers are soaked in PW-640 (a fire retardant liquid solution) prior to gluing and pressing. This means that augmented fire retardant performance can be achieved as part of the product’s production process and applies to the entirety of the finished panel. This method of treatment is more permanent in service than surface coatings and fire retardant properties can be maintained after cutting/ machining.

Fire Retardant Birch Plywood is available ex stock, carrying a full CE Mark for structural use in humid applications (EN 636-2) with an exterior, phenol formaldehyde, glue bond (EN 314-2 Class 3).

Typical Applications
  • Construction
  • Commercial Vehicle Building
  • Joinery
  • Shopfitting
  • Exhibitions
  • Stage sets
Applicable Standards
  • EN ISO 11925 – Ignitability test.
  • BS EN 13501-1 – Single Burning Item Test.
  • BS EN 313 – Plywood classification & terminology.
  • BS EN 314 – Plywood bonding quality.
  • BS EN 635 – Plywood classification by surface appearance.
  • BS EN 636 – Plywood specification.
  • European Class B/C Fire Ratings
  • EN 13986 – CE Marked to AVCP System 1
Environment

88% of Hanson Plywood’s Birch Plywood is sourced from well-managed, FSC® Certified forest management units (10% is sourced from PEFC™ certified sources).

The company’s robust FSC® Chain of Custody management system ensures that this certification is respected and adhered to throughout the supply chain. For further information, please refer to our Environment Page.

Quick Reference Guide – Birch Plywood

Hanson Birch Quick Reference Guide (Typical values collated from Russian, Polish and Finnish production standards).

Please note that all of the grades below are sanded with the exception of C grade.

Thickness (MM)
3
4
5
6
8
9
12
15
18
21
24
27
30
35
40
50
Available Grades
Typical Density (kg/m3)
Typical Weight/8x4 (Kg)
Number of Plies
Gluing Options
Thickness Tolerance * * Sanded panels only
B/BB, S+/BB, BB/BB, BB/CP, CP/CP, C/C
700kg/m3
6.2
3
E1 Int
+0.3
/-0.4
8.3
3
E1 Int
/Ext
+0.3
/-0.5
10.4
4/5
E1 Int
+0.4
/-0.5
12.5
5
E1 Int
/Ext
+0.4
/-0.5
16.6
6/7
E1 Int
+1
/-0.5
18.7
7
E1 Int
/Ext
+0.4
/-0.6
25
9
E1 Int
/Ext
+0.5
/-0.7
31.2
11
E1 Int
/Ext
+0.6
/-0.8
37.5
13
E1 Int
/Ext
+0.7
/-0.9
43.7
15
E1 Int
/Ext
+0.8
/-1.0
50
17
E1 Int
/Ext
+0.9
/-1.1
56.2
19
E1 Int
+1.0
/-1.2
62.5
21
E1 Int
+1.1
/-1.3
72.9
25
E1 Int
+1.05
/- 1.45
83.5
29
E1 Int
+1.2
/-1.2
105
36
E1 Int
+ 1.5
/- 1.9
*For further detailed information such as structural detail and help with specifications, please contact our technical team.
Quick Reference Guide – Fire Ratings

A request we commonly receive is that for a panel with a 1 hour or ½ hr fire rating.

30 or 60mins relates to the concept of Fire Resistance and typically relates to the ability of an elevation or door to withstand the passage of a fully developed fire for said amount of time.

Euroclass relates to the concept of Reaction to Fire and focuses on initial fire growth phase. A Euroclass rated panel may form part of a fire barrier system requiring 30 or 60 mins Fire Resistance overall. We recommend that suitability of a Euroclass rated panel within the design is based upon 3rd party assessment or independent testing specific to the project in question.

There are 7 Euroclass classifications ranging from A1 to F. In line with the Construction Products Regulation (2013) each Euroclass rating requires testing against the relevant European fire test methods – see table below.

Hanson Plywood offer a range of panels manufactured with an A1 rating (see below). Untreated wood-based panels such as plywood, OSB, MDF & Chipboard typically achieve a Euroclass D or E rating. Fire rated panels can be supplied to a Euroclass B or Euroclass C fire performance as required depending upon regulatory requirements.

Class
Performance description
National Class (England & Wales)
National Test Standard (England & Wales)
A1
BS EN ISO 1182
BS EN ISO 1716
Non-combustible
BS 476: Part 4
A2
BS EN ISO 1182
BS EN ISO 1716
BS EN 13823
Limited combustibility
BS 476: Part 11
B
BS EN 13823
BS EN 11925-2
0
BS 476: Part 6
BS 476: Part 7
Bfl (Flooring only)
EN ISO 9239-1
EN ISO 11925-2
N/A
N/A
C
BS EN 13823
BS EN 11925-2
1 & 2
BS 476 : Part 7
D
BS EN 13823
BS EN 11925-2
3
BS 476: Part 7
E
BS EN 11925-2
4
BS 476 : Part 7
F
No performance determined
Unclassified
No Test
Size
Type
12mm
18mm
Grade
BB/BB
BB/BB
1220mm x 2440mm / 2440 X 1220
Euro Class B
Want to know more about Fire Retardant Birch Plywood? Simply fill out our Quick enquiry form or call us on 01422 330 444