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Fire protection

Fire protection

When you need to comply with Building Regulations on fire protection, Lotus Timber offers a range of proven industrial pre-treatments for timber and related substrates at its CE certified.

Making sure you specify the correct fire treatment is vital and there are many different factors to consider that can help save fire damage costs, as well as people’s lives.



 Typical Applications

DRICON treated materials are designed to be used in all interior and weather protected situations. Typical applications include permanent constructions, both residential and commercial projects (internal cladding,
wall and ceiling linings and external coated cladding), high humidity applications (e.g. swimming pools), smoke critical situations (e.g. transport and rail industry timbers, railway and underground stations), high strength requirements (e.g. scaffold boards, structural joists, staircases) and refurbishment projects (e.g. listed buildings, churches). This list is not totally exhaustive and gives an indication of the range of uses for DRICON treated materials.

Surface Coatings

Uncoated DRICON fire retardant treated timber should be installed only where it will not be exposed to precipitation or direct wetting in service. For exterior end-uses, DRICON treated material, prone to direct wetting, must only be used when protected with a well maintained coating. It is the end users responsibility to ensure compatibility of any coating to be used. When DRICON treated material is to be coated, always consult the coating manufacturer for suitable recommendations, and confirmation of adhesion and long term durability characteristics. Coated surfaces will require maintenance in accordance with the coating manufacturer’s instructions.It is important to confirm with the coating manufacturer that the final finish does not downgrade the fire performance, achieved by the DRICON treatment. Highly flammable finishes such as nitro-cellulose based lacquers must not be used. Always consult your coating manufacturer before applying a coating product to DRICON treated material.

Durability of Fire Performance
DRICON treated timber has low hygroscopicity. It is suitable for interior use with up to 90% relative humidity and for exterior applications under a well maintained coating. The treated timber is non-hygroscopic – i.e. it does not absorb water from the air – nor does it give rise to efflorescence.


Lotus Timber utilises the DRICON fire impregnation process under the controls of notified body ‘SP Technical Research Institute of Sweden’ and is allowed to CE mark DRICON treated products according to EU standards:
EN 14915:2013 – solid wood and EN 13986:2004 – plywood.

Solid wood panelling and cladding – “Dricon® Fire retardant treated timber”

Solid wood of spruce (whitewood)
Thickness and density range
12-75 mm, 357-600 kg/m3
Fire class – B-s1,d0

Solid wood of pine (redwood) 
Thickness and density range 
12-100 mm, 417-755 kg/m3
Fire class – B-s2,d0

Solid wood of larch 
Thickness and density range
18-65 mm, 616-867 kg/m3
Fire class – B-s2,d0

Wood-based panels for use in construction – “Dricon® Fire retardant treated plywood” 

Birch Plywood 
Thickness and density range 
12-25 mm, 613-713 kg/m3
Fire class – B-s1,d0

All plywood should be EXT 

Dricon production process

Dricon treated wood production is project base operation. Impregnation with Dricon solution is typical vacuum-pressure treatment - Video. After process wood must be kiln dried on 18+/-2%. Some cases for interior use, wood must be kiln dried in 8+/-2%. Orders delivery time depends from end moisture and can be up to 1,5 month. 



NB! NON-COM Exterior is a Leach Resistant type fire retardant product applied by a carefully controlled high pressure impregnation process followed by kiln drying and heat curing and has independent classification reports across a wide range of timber species and thicknesses, including some modified timbers.

Production only in UK.

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