SR30+ wide
1000mm cover width
PLAIN galvanised as standard, with polyester white or additional coatings available for enhanced protection in aggressive environments.
Nationwide delivery
24 hour delivery
24 hour support
A sinusoidal profile engineered for short spans, canopies and light structures. Its 1000mm cover width — the widest in the sinusoidal range — maximises coverage and minimises sheets, side laps and joints.
The 30mm depth is purpose-built for short spans (1–2.3m) with no over-specification, and the lower weight means less freight, easier on-site handling and better cost efficiency.
Watch this short video for a quick explanation!
LIGHTWEIGHT ROOF DECKING FOR SMALL PROJECTS
Efficient spanning: with a 30mm depth in 0.7mm or 0.9mm gauge, SR30+ spans reliably across common purlin spacings, reducing secondary steelwork — less install time and lower project costs.
Lightweight & flexible: just 6.66–8.57 kg/m² depending on gauge, light yet robust; 1000mm-wide sheets optimise coverage to speed up laying and cut labour time.
Long lengths: supplied up to 12m, reducing joints and improving programme efficiency.
Aesthetics & finishes: a range of colours and paint finishes can be applied to the underside for an attractive look while supporting fire safety compliance.
The clean soffit can stay exposed for an industrial feel or be adapted to internal finishes — a polyester white-coated soffit adds brightness and can remove the need for extra finishes.
Transport optimisation: the wide 1000mm sheets give large coverage per artic load, minimising deliveries and on-site storage.
Fixing efficiency: 150mm end laps and simple main-fix fasteners make installation straightforward and reliable.
FAST, LIGHT ROOF DECKING FOR SHORT SPANS
Features
Profile depth: 30mm | Pitch: 200mm | Crown: 121mm
Available gauges: 0.7mm & 0.9mm steel (S350)
Maximum sheet length: 12 metres
Typical span range: 1.0m–2.3m
Galvanised or polyester coated
Benefits
Fire Performance
SR30+ meets Class A1 Reaction to Fire, Class 1 (BS476 Part 7) and Class O in line with current Building Regulations, offering peace of mind on safety and compliance.
Corrosion Protection Options
Available in hot-dip galvanised finish (Z275) or polyester-coated systems, SR30+ provides strong durability in demanding environments.
Applications
Agricultural Buildings
Lightweight, fast-fixing roof for grain stores, livestock shelters and farm outbuildings. The shallow profile is economical and the 1000mm cover width reduces fixing points.
Light Industrial
Ideal for workshops, factories and storage sheds. The 2.3m maximum span handles typical purlin spacings with minimal deflection and excellent cost-to-coverage ratio.
Canopies & Covered Areas
Perfect for external canopies, covered walkways and semi-open structures where weather protection matters more than high strength requirements.
Refurbishment & Over-Cladding
Retrofit existing structures with a lightweight profile that doesn’t add excessive dead load. Easy to cut on site and compatible with most existing purlin spacings.
TECHNICAL SPECIFICATION
Technical
Material & Coating Options
Steel grade: S350 (minimum yield 350 N/mm²)
Gauges available: 0.7mm | 0.9mm only (no 1.2mm)
Galvanised: Z275 (275g/m² zinc dual-sided coating, 15–25 year durability)
Polyester coated: White 150g/m² Z150 base (25+ year durability, enhanced aesthetics)
Fire performance: Class 1 | Class 0 (subject to insulation and final assembly)
Span & Deflection
Typical span range: 1.0m–2.3m (based on 0.9mm gauge, deflection Span/200)
Deflection limit (default): Span/200 for most applications | Span/90 for more rigid structures
Load factor: 1.5 safety factor applied
Bearing length: Minimum 60mm on purlin
Typical purlin spacing: 1.0–2.0m centres (design-dependent)
For more information, please download our datasheet or click here.
ENQUIRY HERE
9 Gaol Lane, Sudbury, Suffolk, CO10 1JL
Monday - Friday 7.30am - 4.00pm
Saturday - Sunday - CLOSED