Forza detailed drawings & specifications

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Forza - Defining Doors
Veneer Guide

Forza “Firewall” Veneered Panels

Class 0 (Fire Propagation) & Class 1 (Spread of Flame)

Section 6 (Wall & Ceiling Linings) of Approved Document B2 (The Building Regulations 2000) classifies the fire performance characteristics for internal linings.

For rooms (for the purposes of B2, an enclosed space within a building that is not used solely as a circulation space, the term including not only conventional rooms but also cupboards that are not fittings and large spaces such as warehouses and auditoria) of less than 30m2, national fire performance rating Class 3 is suitable.

For Circulation spaces or rooms greater than 30m2 then national fire performance rating Class 0 is required.

Paragraph 6.2 of B2 defines a wall for the purpose of the performance of wall linings as being:

a) The surface of glazing (except glazing in doors)

b) Any part of a ceiling which slopes at an angle of more than 70 degrees to the horizontal

But a wall does not include:

c) Doors and frames

d) Window frames in which glazing is fitted

e) Architraves cover moulds, picture rails, skirtings & similar narrow components

f) Fitted furniture


Forza veneer panels with a substrate density of greater than 400Kg/m3 i.e. MDF or plywood and finished with our standard u/v cured lacquer satisfies the national fire performance rating Class 3.

Forza 'Firewall' veneered panels surface coated on the exposed face with Xero-Fire lacquer satisfies the national fire performance rating Class 0 and achieves Spread of Flame classification Class 1 (BS476:p7). The specialist application technique employed by Forza in the use of Xero-Fire lacquer creates a visual finish that is far superior to the traditional intumescent lacquers.

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fis1.jpg GAI_thumb-56px.jpgACS Logos1.jpgribalogo_thumb_56px.jpgForza Doors specification summaries are available through the RIBA Product Selector and NBs Plus