Roofing & Cladding Screws

Compare packs of TechFast 5.5 × 25mm hex-head roofing screws with washers. Check the sheet profile, supporting material and fixing specification before choosing a pack.

GSD fixing guide

Choosing roofing and cladding screw packs

The current range contains the TechFast 5.5 × 25mm hex-head screw with washer, with three pack quantities.

Check the complete fixing specification

Confirm the sheet profile, supporting material, material thickness and required fixing length against the roofing-system and fastener instructions. Overall length is not a statement of usable fixing thickness or drilling capacity.

Do not choose a roofing screw solely because it has a washer or a self-drilling point. Suitability depends on the complete connection.

Select 10, 50 or 100 screws

The pack quantity is the number of screws supplied. Select the required option on the product page to check price and availability. Count fixings using the roofing-system specification rather than estimating from roof area alone.

Check washer seating and installation instructions. A washer does not establish a watertight result for every sheet, support or installation.

Questions before you order

Which size is in this roofing screw range?

The current listing is 5.5mm diameter × 25mm long, with a hex head and washer. Packs of 10, 50 and 100 are offered.

Will these screws fit every roofing sheet or support?

No universal suitability is specified. Check the sheet, support material, thickness and fastener requirements against the installation instructions before ordering.

Is the pack quantity the number of fixings supplied?

Yes. Select 10, 50 or 100 screws in the product options. The number needed for an installation must come from the roofing-system fixing specification.

Need help checking a size or pack? Contact GSD before ordering.