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Business Details
14 Years
experience
Premium Timber & Building Materials in Grangemouth
Thornbridge Sawmills is a heritage-rich brand in the world of wood products, committed to delivering high-quality and certified timber solutions to trade professionals and DIY enthusiasts alike. With a passion for sustainable forestry and a commitment to responsible sourcing, our extensive product range consistently meets the highest standards of quality. Whether you're working on a large commercial project or a personal home renovation, our experienced and dedicated team is here to support you every step of the way. Our nationwide network of branches ensures local expertise and convenient access to essential materials, while our same-day click-and-collect service streamlines project timelines for trade customers. As part of the UK's largest independent timber group, we combine scale with personalized service, offering trade cash, trade credit, and DIY options to suit diverse needs.

From structural timber to decorative finishes, our product portfolio covers every aspect of construction and landscaping. We prioritise environmental responsibility through PEFC-certified timber and UC4-rated treated products, ensuring durability and compliance with modern standards. Our digital tools, including decking calculators and online project planning resources, empower customers to execute projects efficiently. With decades of collective experience in timber processing and distribution, we maintain rigorous quality control across all products, from sawn green treated sleepers to composite cladding systems. Choose Thornbridge Sawmills for a truly trusted and knowledgeable partner in the world of timber, where tradition meets innovation in every board we supply.
Services
Timber Decking Composite Decking Fencing Supplies Cladding Solutions Garden Structures Sheet Materials Building Timbers Landscaping Products Door Solutions Flooring Materials
Details
  • Year established: 2012
Highlights and features
  • We offer PEFC-certified sustainable timber sourcing
  • Our nationwide branch network provides local expertise
  • We implement rigorous quality control for UC4-rated treated products
  • Our team has decades of combined experience in timber processing
  • We provide digital tools for project planning and material calculation
Associations and certifications
  • PEFC
Services
Timber Decking
Our premium timber decking combines natural aesthetics with durable construction for outdoor spaces. Available in pressure-treated softwood options with UC3 and UC4 ratings for enhanced weather resistance. Each board undergoes strict quality control to ensure dimensional accuracy and structural integrity. Ideal for creating long-lasting garden terraces and patio areas that maintain their natural charm through regular maintenance.
Composite Decking
Composite Prime HD Decking offers weather-resistant performance with minimal upkeep requirements. Available in multiple colours and profiles including dual-tone options that resist fading and staining. The 25-year warranty guarantees colourfastness and structural durability. Suitable for high-traffic outdoor areas where traditional timber maintenance would be impractical.
Fencing Supplies
Comprehensive fencing solutions include treated softwood posts and panels with UC4 protection against ground contact decay. Available in various heights from 3ft to 6ft with matching gravel boards and accessories. Our system ensures secure installation with pre-treated components that maintain structural integrity throughout their service life.
Cladding Solutions
Hardie Plank fibre cement cladding provides durable weather protection with textured finishes in multiple colour options. The 3.6m boards feature interlocking profiles for watertight installation. Available in smooth and textured surfaces that resist UV degradation and maintain appearance without regular painting or treatment.
Garden Structures
Tanalised garden sheds offer rot-resistant construction with 10-year guarantees against fungal decay. Available in apex and pent roof styles with dimensions from 4x4ft to 8x17ft. Pressure-treated frames eliminate the need for post-installation preservatives while maintaining structural strength in ground contact applications.
Questions
What timber certifications do you hold?
We stock PEFC-certified timber across our product range, ensuring sustainable forest management practices.
Do you offer delivery services?
Free delivery is available for online orders over £240 (incl. VAT) from our Scottish branches.
What decking warranty periods do you provide?
Composite Prime HD Decking carries a 25-year warranty covering structural integrity and colourfastness.
Can I collect materials immediately?
Same-day click-and-collect is available at all Scottish branches for pre-ordered trade materials.
What payment options exist for trade customers?
We offer Trade Cash accounts with immediate payment terms and Trade Credit accounts with agreed payment periods.
How do I calculate required decking materials?
Our online decking calculator helps determine board quantities, joist spacing, and fastener requirements based on project dimensions.