Lonza Wood Protection


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Fire Retardant Treated Timbers and Industrially Applied Fire Retardant Pre-Treatments

Lonza Wood Protection, a business of Arch Timber Protection Limited, a Lonza company, offers proven fire retardant treatments for structural wood products and also supplies pre-treated fire-resistant timber.

Wheldon Road,
West Yorkshire,
WF10 2JT,
United Kingdom
Fax Number

Lonza Wood Protection offers proven fire-retardant treatments for structural timbers and board products and a dedicated web site is now available.

Only accredited, approved and correctly applied fire-retardant treatments allow clients to effectively meet building control requirements and still produce stunning building designs using nature’s most versatile material. Lonza’s DRICON and NON-COM Exterior treatments provide these assurances and are available from our service treatment centre in West Yorkshire, UK.

Our facility operates to both ISO9001 and ISO14001 standards and is accredited by the UK Wood Protection Association’s Quality scheme.

DRICON is the only fire-retardant treated timber with BBA approval and NON-COM Exterior is the only fire-retardant treatment accepted by NHBC for exterior cladding timbers.

Dricon is the only BBA approved fire retardant treatment for timber.
The new visitor centre at Culloden battlefield utilised both Dricon and Non-Com Exterior treatments for both interior and exterior timbers.
Dricon treated redwood produced a spectacular interior for St. Annes Church in Belfast.
The award winning observatory at Kielder Water, Northumberland used both Dricon and Non-Com Exterior protection to make the most of timber in this natural setting.
Treatments are carried out at Arch’s modern facilities at Castleford to both ISO 9001 & ISO 14001 international standards.

Proven fire-retardant treated timbers

Treatments will meet either Euroclass B or Euroclass C surface spread of flame requirements of EN 13501-1. We have global experience in the fire protection of timber and have extensive fire certification for a wide range of timber species in conjunction with Exova warringtonfire, the leading fire test body in Europe.

DRICON – fire-retardant treated timber for interior situations

DRICON is the only British Board of Agrément (BBA) approved fire-retardant treatment for timber and has recently celebrated 25 years of continuous BBA approval. A water-based, humidity-resistant (HR) type formulation, DRICON is designed to protect timbers and sheet materials to be used in interior situations.

Treatment involves pressure impregnation of the DRICON formulation into the timber, followed by careful kiln drying to return the timber to a specified moisture content. A wide range of solid timbers and plywoods are suitable for DRICON treatment.

DRICON treatment has the following accreditations:

  • UK Wood Protection Association approved product
  • Approved London Underground product
  • Approved Fire Protection Association product
  • Independently assessed and approved by the American Wood Preservers Association
  • Independently assessed and accredited with the Swedish Sitac Quality Mark
  • Approved by the National Access & Scaffolding Confederation for the protection of scaffold boards
  • Approved by Chiltern International against the TF2000 six-storey timber frame staircase test

NON-COM Exterior – fire-retardant treated timber for exterior and severe damp situations

NON-COM Exterior is a polymer-based, leach-resistant (LR) type formulation designed to protect timbers and sheet materials to be used in exterior and severe damp situations. In these exterior situations, NON-COM Exterior treated timbers can be used without a decorative coating in exterior situations. However, if a decorative coating is required, Lonza recommend the use of industrially applied DRYWOOD Woodstain for exclusive use on NON-COM Exterior treated timbers.

Treatment involves pressure impregnation of the NON-COM Exterior formulation followed by a careful kiln drying and heat curing process to return the timber to a specified moisture content. A wide range of solid timbers and plywoods are suitable for NON-COM Exterior treatment, as well as specific commodities, such as cedar shingles and shakes and Yorkshire boarding.

NON-COM Exterior treatment has the following accreditations:

  • UK Wood Protection Association approved product
  • National House Building Council (NHBC) accepted product for exterior timber cladding
  • Approved Fire Protection Association product

Continuing professional development (CPD) of fire-retardant treatments

Lonza offers a CPD-accredited presentation for fire-retardant treatments for timber through the CPD service.

White Papers

  • Proven Fire Protection for Timber: Making Schools Safe

    Timber is still our most sustainable and versatile construction material. Just like any other material, protecting it against the threat of fire is one of the most important factors when complying with Building Regulations on new build projects. This is particularly so for schools or educational buildings which will accommodate large numbers of people.

  • Superior Fire Protection from Lonza

    When it is identified that fire protection is required for timber cladding there is a clear choice of industrially applied impregnation treatments or coating products.

Press Releases

  • Specify Timber Treatments the Easy Way

    Lonza Wood Protection has recently compiled two new NBS Plus Product Specifications, to help construction professionals specify its wide range of timber treatments with ease and precision.

  • New Colourful Protection

    Lonza Wood Protection has introduced a new coatings range for exclusive use on NON-COM Exterior fire retardant treated timber claddings.

  • Restol Wood Oil in UK Relaunch

    Lonza Wood Protection is relaunching its range of Restol Wood Oil products. Restol wood oil is a high-performance, low-maintenance, linseed oil based product providing a complete finish from a single can, eliminating the need for a separate primer or undercoat.

  • Lonza best at Timber-Expo

    Lonza Wood Protection was awarded the "Best stand in show" at the recent Timber-Expo 2012 by the show organisers and TRADA.

  • TANALITH E 8000 Keeps Island Coast Fence Protected

    Inishbofin (Inis Bo Finne, or the Island of the White Cow), an island just off the coast of Connemara, County Galway, is home to a unique fencing project built from next-generation pressure-treated TANALISED timber supplied by Aughrim-based Woodfab Timber.

  • Lonza Wood Protection's DRICON Fire Retardant Treatment Used to Protect Wood in New Highland-style Home on Isle of Skye

    Lonza Wood Protection is pound to announce its DRICON fire retardant treatment is protecting the oak wood used in a beautiful award-winning home at Boreraig, on the Isle of Skye. The building, inspired by the blackhouse, a traditional style of Highland architecture, was designed by architect Neil Stephen of Dualchas Building Design to reflect the local landscape and heritage and to be a quiet and restful retreat for its Buddhist owner.

  • Non-Com Exterior Now Approved by the WPA

    Non-Com Exterior, Lonza's long-established leach resistant fire-retardant protection for exterior timbers, has just achieved certification as a WPA Approved Product, the highest quality approval from the Wood Protection Association (WPA).

  • Tanalith E 8000 Shortlisted for Innovation Award

    Tanalith E 8000, Lonza's next generation wood preservative launched in UK and Ireland markets in July 2012, has been selected as one of the shortlisted finalist in this year's Timber Trades Journal Award for Innovation. The overall winner will be announced at the awards event in mid-September.

  • Timber Expo 2012 Preview – 12 July 2012

    Lonza Wood Protection will be exhibiting at the second Timber Expo event this September. The UK's only dedicated timber exhibition will be held at Coventry's award-winning Ricoh Arena on the 25 and 26 September and, once more, promises to be one of the highlights of the 2012 construction and fencing calendar.

  • DRICON Treatment in the Highlands and Islands

    DRICON fire retardant treatment is protecting the oak wood used in a beautiful award-winning home at Boreraig, on the Isle of Skye. The building, inspired by the blackhouse, a traditional style of Highland architecture, was designed to reflect the local landscape and heritage, and to be a quiet and restful retreat for its Buddhist owner.

  • Lonza Wood Protection to Present at Wood Marketing Federation Seminar

    Lonza Wood Protection will be presenting at Wood for All Seasons, a forthcoming Wood Marketing Federation (WMF) seminar. The event, to be held at Farmleigh House near Phoenix Park, Dublin, on Friday 11 May, aims to explore the innovative use of wood and wood products, mainly in external applications as part of the WMF's wood promotion programme.

  • DRICON Celebrates 25 Years of BBA Accreditation

    In April 2012, DRICON, Arch Timber Protection's water-based fire retardant will celebrate 25 years of continuous British Board of Agrément (BBA) accreditation, giving confidence and reassurance of long-term and safe fire protection to the contractors, designers and most important of all, occupants of buildings and structures that use timber for all or part of their construction.

  • Lonza Completes Acquisition of Arch Chemicals

    Lonza Group, one of the world's leading suppliers to the life science industries, announced today the expiration of the subsequent offering period of the tender offer by Lonza and its indirect, wholly-owned subsidiary LG Acquisition for all outstanding shares ofcommon stock of Arch Chemicals, at a price of $47.20 per share in cash, without interest and less any required withholding taxes.

  • Dricon Reaffirmed as Only Fire Retardant Timber Treatment Approved for Use on London Underground

    Dricon has been recommended for use by London Underground (LUL) since 2007 but now also has a fully approved listing on its product register. This is the key reference for all suppliers into LUL. Dricon is at present recognised as the only fire protection to meet the stringent requirements of LUL for both underground and above ground projects due to its proven track record and unique accreditations.

  • Arch is Top of the Class

    Schooldays are said to be the best days of your life - Arch Timber Protection is ensuring that they are also the safest, using its DRICON fire retardant treatment to protect internal timber at Passmores School and Technology College, Harlow, Essex, UK.

  • Making Your Timber Fire Classification Report Fit for Purpose

    Under the construction, design and management regulations 2007, in the event of a building fire, and any deaths caused, a court of law will want to know how fire protection systems were selected and whether there was adequate liaison between all the parties involved in making sure that the protec

  • Dricon Hits New Heights

    Arch Timber Protection's proven Dricon fire retardant treatment for timber will be protecting the refurbished Charles Inglis Clark (CIC) memorial hut, a climber's facility on Ben Nevis. Ben Nevis is the tallest peak in the UK, and this could make the CIC hut the highest fire retardant project in

  • Dricon Protects Dramatic Corby Building

    Dricon treated timber from Bates Timber is helping to fire protect the Corby Cube, a dramatic glass and concrete building housing Corby's theatre, library, registry office and Council Chamber, as well as a one-stop-shop for council services. On behalf of Bates Timber, Arch Timber Protec

  • Dricon Protects Stirling Castle Art for Scotland's Future

    Historic Scotland has completed work on all six apartments of the Royal Lodgings at Stirling Castle, including a recreation of the 16th century wooden ceilings. The boarded ceilings and moulded ribs forming the coffers used oak protected with Arch Timber Protection’s Dricon fire retardant.

  • Arch Signs Up For Timber Expo 2011

    Arch Timber Protection has become one of the first exhibitors to sign up for the timber industry's dedicated exhibition, Timber Expo 2011, which promises to be one of the highlights of the 2011 construction and fencing events calendar. The show, backed by TRADA Technology, will be held

  • Arch Timber Protection to Attend Ecobuild 2011

    Arch Timber Protection will be exhibiting at Ecobuild 2011, the world's biggest event for sustainable design, construction and the built environment, for the fifth concurrent year. The UK's largest construction event takes place on 1-3 March and will be held at the ExCel Exhibition and

  • Tanalised Timber Cladding Provides the Feel of Woodland at Dutch School

    The façade of St Theresa School in Bilthoven, Holland needed to be warm, recognisable and complement the lightly wooded landscape in which it is located. Therefore the choice for Tanalised E pressure treated timber cladding was made. As a combined primary school, child daycare and community centr

  • Tanalised Pressure-Treated Timber Used to Recreate Roman Fort

    For centuries a Roman settlement has stood on the shores of the Rhine at Xanten, Germany, originally built to guard the northern border of the Roman Empire. Now a reconstruction of the original Roman fort, manufactured from Tanalised pressure treated timber, has created a magnificent pl

  • Arch Timber Protection Receive 5-Star Feedback

    Arch Timber Protection has seen an increase in the number of CPD Training Seminar attendees awarding their presenters five-star feedback at the start of 2010. Participators from throughout the UK within the timber and specification industries commented on the presentation’s content and


  • Chaoyang Park Plaza

    Chaoyang Park Plaza is a mixed-use development constructed in the central business district of Beijing, China.