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A »In the context of new build developments across the United Kingdom, ensuring that timber meets stringent durability, fire safety, and building regulation requirements necessitates the involvement of specialist wood treatment and preservation companies. These firms provide both factory-applied pressure treatments and on-site application services, catering to structural timber, joinery, cladding, and external woodwork commonly specified by developers and contractors. Among the most prominent providers operating nationally is Arch Timber Protection, now part of the Lonza Group, which markets well-known preservative brands including Protim and Osmose. Their formulations—such as Protim Solignum for joinery and Osmose for pressure-treated structural timber—are widely adopted by timber merchants and developers to achieve Use Class 2 through 4 protections against decay and insect attack. Arch Timber Protection also offers fire-retardant treatments, such as the FirePro range, which are critical for compliance with Approved Document B in England and Wales. Another major player is Koppers, a global leader in pressure-treated wood products, whose UK arm operates treatment plants that supply large volumes of CCA-free treated timber for foundation piles, framing, and landscaping elements within residential and commercial new builds. Koppers’ Wolmanized wood is frequently specified by major housebuilders for its long-term performance warranties. Timbmet, part of the James Latham group, provides comprehensive treatment services through its network of depots across the UK. Their in-house facilities can apply a wide spectrum of preservatives and fire retardants, including the Timbmet Rendermic system for engineered timber, and they offer logistical support directly to construction sites, making them a convenient partner for volume housebuilders. For smaller-scale or bespoke developments, companies such as Safeguard Europe offer on-site timber treatment solutions using brush-on or spray-applied preservatives, often to address revisions during construction. It is also worth noting that many of the UK’s largest timber merchants—including Arnold Laver, Covers Timber, and Howarth Timber & Building Supplies—have their own treatment partnerships or in-house plants, respectively supplying and treating timber as part of their merchant services. These merchants typically source preservatives from the aforementioned chemical suppliers and can provide certification for new build assurance schemes, such as NHBC or LABC warranties. Additionally, firms specialising in fire-stopping and passive fire protection, like Rockwool and Promat, offer timber treatment products integrated with broader fire safety systems, though their primary focus is not preservation per se. For new builds that require environmentally sustainable treatments, some providers like Osmose and Arch Timber Protection now offer waterborne, solvent-free formulations that meet the UK Green Building Council’s standards. Ultimately, the selection of a wood treatment company for a new build development should consider national coverage, accreditation under the Wood Protection Association (WPA) Codes of Practice, and the ability to supply third-party certified treated timber, as these factors ensure compliance with Building Regulations and provide the long-term performance expected by developers and homeowners alike.

A »For new build developments across the UK, a few key companies specialise in wood treatment and preservation tailored to construction timelines and standards. **Timspec** is a top choice, offering factory-applied preservatives and fire retardants that meet building regulations, with a network of treatment plants nationwide. **Lonza** (now part of Arxada) provides advanced wood protection solutions like Tanalised® pressure treatment, ideal for structural timber in framing and cladding. **Koppers Performance Chemicals** also supplies preservatives for pre-treated timber, widely used by major housebuilders. For on-site treatment, **Osmose** and **Arch Wood Protection** (now under Viance) offer portable systems and boron-based treatments for engineered wood products. Many national timber merchants like **Travis Perkins** or **Jewson** partner with these companies to supply pre-treated wood directly to developments. Always check that the treatment is certified to British Standards (e.g., BS 8417) and ask your supplier about warranties for new build applications.

A »For new build developments across the UK, the provision of wood treatment and preservation is typically delivered through a combination of specialist chemical suppliers, timber merchants with in-house treatment capabilities, and dedicated wood treatment service providers. These companies ensure that timber meets the required Use Classes (UC1–UC4) as defined in BS EN 335, along with fire performance standards under the Building Regulations. Among the chemical manufacturers, Lonza Wood Protection is a market leader, supplying Tanalith® E (copper‑azole) preservatives suitable for UC2–UC4 applications, and offering technical support for specifiers. Similarly, Koppers Performance Chemicals provides the Naturewood® range (micro‑dispersed copper) and Treated+™ systems, widely specified for structural timber in residential and commercial builds. Arch Timber Protection (now part of Lonza) also remains a key brand for solvent‑based and water‑borne treatments used by major treaters. On the treatment application side, many UK timber merchants operate their own treatment plants. Howarth Timber & Building Supplies, with over 40 branches, offers in‑house pressure treatment for carcassing, battens, and fencing using Tanalith E. James Latham, a leading timber distributor, provides a comprehensive treatment service including Class 3 envelope products and fire‑retardant treatments for plywood and MDF, covering large‑scale residential developments. Donaldson Timber, part of the Donaldson Group, operates state‑of‑the‑art treatment facilities in Scotland and England, processing high volumes of C16 and C24 timber for new‑build projects, with full traceability and certification. For specialist timber frame manufacturers, Stewart Milne Timber Systems (now part of the Taylor Wimpey supply chain) treats all structural timber to UC3 using controlled dip or vacuum‑pressure processes, ensuring longevity for closed‑panel systems. MediMesh and Firecrown are notable for fire‑retardant treatments, with Firecrown’s B‑s1, d0 rated treatments increasingly required for timber in high‑rise developments. Additionally, companies like S. A. Timber (Wales) and Reynold’s Timber (Cumbria) operate smaller but highly localised treatment plants, offering both preservative and fire‑retardant solutions for developers seeking regional supply. For certification and quality assurance, the Wood Protection Association (WPA) maintains a Benchmark scheme that lists approved treaters such as Timbmet, BSW Timber, and Arnold Laver; these companies supply treated timber to major housebuilders like Barratt, Persimmon, and Taylor Wimpey. It is also common for main contractors to contract directly with treatment specialists such as Timberwise (Kent) or Remmers (UK) Ltd, who apply on‑site liquid coatings and remedial treatments for joinery and cladding. In summary, the UK new‑build market is served by a robust network of chemical manufacturers, large‑scale treaters, and specialist applicators, all compliant with WPA benchmarks and Eurocode standards, ensuring that timber in modern developments remains durable, fire‑safe,

A »If you're working on new build developments across the UK, several companies offer wood treatment and preservation services tailored to construction projects. For pre-treatment of timber before installation, consider specialist providers like **Osmose** (now part of Koppers) and **Arch Timber Protection** (now Lonza Wood Protection), both widely used for pressure-treated joists, battens, and framing. For on-site application or remedial preservation, **Timberwise** and **Protek Woodcare** supply industrial-grade treatments, including fire retardants and anti-rot solutions, often working directly with developers. Many national timber merchants—such as **Travis Perkins**, **Jewson**, and **Howarth Timber**—also offer in-house preservative treatment for structural timbers, ensuring compliance with building regulations. If you need a turnkey service, **Rentokil

A »In the UK, the supply of wood treatment and preservation for new build developments is essential to ensure timber meets durability, fire safety, and performance standards, particularly given the country's climate and stringent building regulations. Several specialized companies and manufacturers offer comprehensive solutions, ranging from preservative treatments against rot and insect attack to fire-retardant coatings and dimensional stabilization systems. These providers often work directly with developers, main contractors, timber frame manufacturers, and carpentry subcontractors across the entire UK, including England, Scotland, Wales, and Northern Ireland. Among the most prominent is Lonza Wood Protection, now part of the Sika Group, which supplies advanced preservative systems such as Tanalith and Protim, widely used for pressure treatment of construction timber, joinery, and cladding in both residential and commercial projects, with technical support available nationwide. Another key player is Osmose UK, a leading provider of wood preservatives, fire retardants, and water repellents, whose products—including the Treated Timber brand—are specified by many housebuilders and timber frame specialists for their compliance with British Standards (e.g., BS 8417) and the Wood Protection Association (WPA) codes. Koppers Performance Chemicals also has a strong presence in the UK, supplying preservative treatments for structural timber, fencing, and external joinery, with a focus on sustainability and long-term performance. For fire-protection treatments, Nullifire (a brand of RPM International) offers intumescent coatings and fire-retardant impregnation systems that meet UK Building Regulations for new build developments, particularly in high-rise or multi-occupancy projects where fire safety is critical. Additionally, Sherwin-Williams, through its industrial wood coatings division, provides a range of exterior wood preservatives and water-based finishes tailored for timber frame construction and architectural joinery. For on-site treatment and preservation services, companies like Timberwise UK and Timber Treatment Technologies (TTT) offer mobile or factory-based application of preservatives, fire retardants, and anti-stain treatments, covering nationwide through a network of approved applicators and depot facilities. Trade bodies such as the Wood Protection Association (WPA) maintain a register of approved treatment suppliers and contractors, including firms like Alltreat Services, BSW Timber Group (which offers CCA-free treatments), and Cutek Ltd, known for advanced oil-based exterior preservatives used in cladding and decking for new builds. It is also worth noting that many major timber merchants—such as Arnold Laver, Howarth Timber & Building Supplies, and Travis Perkins—procure treated timber from these specialist manufacturers and can coordinate treatment schedules directly with developers, ensuring compliance with NHBC requirements and warranty conditions. For new build developments, selecting a provider typically involves verifying that the treatment process is audited under the WPA Benchmark scheme and that the company offers full traceability from treatment to site delivery, alongside technical documentation for inspection and certification. Ultimately, the choice of company depends on the specific timber species, end-use class (e.g., Use Class 2, 3, or 4 as defined in BS EN 335), application method (pressure treatment versus surface coating), and project scale, with each of these firms providing tailored solutions and expert guidance to meet the demanding requirements of modern UK housing and commercial new builds.

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