Perforated Galvanised Steel Sheet - R8/T11 (8.0mm Holes / 11.0mm Pitch)

Galvanised perforated steel sheet with R8/T11 hole pattern - 8.0mm round holes at 11.0mm pitch (staggered 60° triangular pattern). Zinc-coated mild steel for long-term outdoor corrosion resistance, supplied in standard UK sheet sizes (2 x 1m, 2.5 x 1.25m) and thicknesses (1mm, 1.5mm). Suitable for outdoor ventilation, agricultural use, animal enclosures, garden screens, livestock panels, exterior cladding and any application where rust resistance matters.

R8/T11 Pattern Specification

Hole diameter: 8.0mm round, staggered pattern.
Pitch: 11.0mm centre-to-centre spacing.
Material: Pre-galvanised or hot-dip galvanised mild steel.
Coating standard: BS EN 10346 (pre-galvanised) or BS EN ISO 1461 (hot-dip galvanised).

Available Sizes & Pricing

All prices include VAT.

Outdoor & Corrosion-Resistant Applications

Galvanised perforated sheet is the standard choice for outdoor and damp-environment use: agricultural buildings, livestock pens, animal enclosures, garden screens, exterior ventilation grilles, marine-adjacent applications, drying racks, water-handling sieves, fence infill panels, exterior architectural cladding, and any space where mild steel would corrode. The 8.0mm hole size provides good visibility and air-flow for ventilation and screening applications.

Bulk & Trade Orders

For bulk and trade orders (5+ sheets or multi-pattern orders), contact us for a project quote - trade pricing is available for larger quantities. Sheets are supplied in the standard sizes shown above.

Delivery Information

Lead times are currently 3-5 working days for galvanised perforated sheets. Sheets are heavy and bulky - delivered on a pallet to mainland UK addresses. Suitable site access and someone available to assist with offloading are required.

Frequently Asked Questions

What does R8/T11 mean on a perforated sheet?
R8/T11 is the industry-standard pattern code: 'R' is the hole diameter and 'T' is the pitch (centre-to-centre spacing). So R8/T11 means 8.0mm round holes spaced at 11.0mm pitch on a staggered (60-degree triangular) pattern. This is the most common UK perforated sheet specification convention.

Why choose galvanised over mild steel perforated sheet?
Galvanised perforated sheet has a zinc coating applied before or after perforation, giving long-term corrosion resistance for outdoor and damp applications. Mild steel will rust in outdoor or unheated environments unless painted; galvanised steel will not. Choose galvanised for: outdoor screens, agricultural buildings, livestock pens, outdoor ventilation, marine-adjacent applications, animal enclosures, exterior architectural panels, and any application where the sheet will see moisture, weather or unheated conditions. Mild steel is fine for dry, indoor or paint-finished applications.

What is galvanised perforated sheet used for?
Common applications include outdoor ventilation grilles, agricultural screens, livestock and animal enclosure panels, drying racks, sieves and filters for wet processes, exterior cladding panels, garden screens, fencing infill panels, water-strainer mesh, balcony screens, machine guards in damp workshops, and any outdoor or unheated location where rust resistance matters. The zinc coating provides 10-25+ years of outdoor service depending on environment.

What's the delivery lead time?
Lead times are currently 3-5 working days for galvanised perforated sheets. Sheets are heavy and bulky items - delivered on a pallet to mainland UK addresses. Suitable site access and somebody available to assist with offloading are required.