Flat Roof Firring Strip | 4800mm | 88mm to 5mm

Structural Timber Firring Strips – Also known as Declivity strips in Scotland, these are professionally angled and tapered timber lengths engineered to create a precise, reliable fall on flat roof structures or level out uneven joists. Milled from high-quality, graded, and pressure-treated timber, these firrings ensure efficient water runoff and a solid, structurally sound base for your project.

Key Specifications & Features

• Material: Cut from pressure-treated, structurally graded softwood timber.
• Precision Taper: Machine-cut on a continuous, accurate gradient (ADD MY GRADIENT) to guarantee an exact slope for water drainage without the need for complex on-site carpentry.
• Finish: Regularised, clean-sawn finish ensuring consistent widths and depths across your entire run.
• Treatment: Pressure-treated (Tanalised) for ultimate long-term rot and insect resistance on exterior roofs.
• Dimensions: Cut in heavy-duty structural widths and handy lengths to match standard UK joist layouts perfectly.
• Different sizes:We can also offer firring strips cut to size. Simply email us your requirements along with your delivery postcode and we will price them up.

Perfect For:

• Creating the mandatory falls and drainage slopes on flat roof extensions, garages, and sheds.
• Furring out and leveling sagging, uneven floor joists or ceiling timbers in older properties.
• Providing a stable, sloped firring framework for EPDM rubber, GRP fiberglass, or traditional felt roofing.

Delivery & Bulk Saving Notice: Due to the structural lengths of these timber firrings, they are carefully bundled, banded, and delivered securely via our specialist DX transport network to prevent bowing or transit damage. Note: Occasionally, firrings can break on the fragile thin end during transport. As long as the pieces are simply pushed tightly together during fitting and securely screwed down, this is of absolutely no detriment to the product's intended structural use. Save up to 30% automatically at checkout when ordering in trade quantities!

Please Note (Natural Timber Character): Timber is a living, natural product. Each piece possesses its own unique characteristics, which may include natural colour variations, unique grain patterns, knots, or minor surface shakes. These features are a natural hallmark of real wood and do not affect the structural integrity or quality of the product. Timber can also react to atmospheric changes in humidity and temperature, so be sure to store the timber appropriately. See our storage guide for details.