Sheets From box profile to anti-condensation and GRP roof lights — our complete range of steel roofing solutions delivers strength, durability and a professional finish for every project across the UK.
AS 33/1000
Box Profile
Roofing Sheet
Our AS 33/1000 Box Profile roofing sheet is a strong, durable and cost-effective solution for cladding industrial, commercial, agricultural, and storage buildings. Designed for external wall applications, this high-performance steel cladding system provides excellent weather protection while delivering a clean and professional finish.
Manufactured from high-quality coated steel, our box profile sheets feature a deep ribbed profile that increases structural strength and rigidity — ideal for large wall spans on warehouses, workshops, factories, garages, and farm buildings.
Deep ribbed profile increases structural strength and rigidity — ideal for large wall spans on industrial and commercial buildings.
Effective 1000mm cover width ensures efficient installation and maximum coverage per sheet, reducing installation time.
Durable coated steel protects against corrosion, harsh weather conditions and UV exposure for long-lasting performance.
Minimal upkeep required — no painting or treating needed. Simply install and enjoy years of reliable protection.
| Profile Depth | 33mm |
| Cover Width | 1000mm |
| Sheet Thickness | 0.5mm — 0.7mm |
| Material | High-quality coated steel |
| Installation | Vertical or Horizontal |
| Custom Lengths | Cut to size on request |
Need?
Use our free online calculator to get an instant estimate for your Box Profile roofing sheets — no account needed, no commitment required.
No Moisture.No Drips.
No Worry.
Factory-applied fleece backing that captures and holds moisture until conditions allow it to safely evaporate — keeping your building, livestock and equipment perfectly dry.
Alpha Steel's anti-condensation roofing sheets are specially designed panels that prevent moisture build-up on the underside of metal roofs. During temperature changes, standard metal sheets can cause condensation to form — which may drip onto stored goods, equipment or livestock.
Our sheets solve this problem by incorporating a factory-applied absorbent fleece backing. Ideal for agricultural buildings, warehouses, garages, workshops, carports and industrial units.
A simple three-step process that keeps your building dry and protected year-round
During temperature fluctuations, standard metal sheets cause moisture in the air to condense on the cold underside of the roof.
Our factory-applied absorbent fleece backing immediately captures and holds the moisture before it can drip onto stored goods or equipment.
When conditions allow, the captured moisture safely evaporates — maintaining a consistently dry and protected interior environment.
Built-in protection for livestock, goods and equipment
Built-in fleece backing designed to absorb and hold moisture until conditions allow safe evaporation.
Absorbs and releases moisture effectively, preventing dripping onto stored goods, equipment or livestock.
Strong, high-quality coated steel offering excellent weather resistance and long-term durability.
Long lifespan with minimal upkeep required, saving time and money over the lifetime of the roof.
Building Dry?
Use our free online calculator to get an instant estimate for your Anti-Condensation sheets — or speak to our team for expert advice tailored to your project.
Bring Light
Into Your
Building.
Glass-Reinforced Plastic roofing solutions designed to brighten even the darkest corners of your warehouse, shed or industrial unit. Seamlessly integrates with our box profile and corrugated steel sheets.
Strength, energy efficiency and natural light — combined
- Weather resistant — rain, hail, wind
- Grime & dust repellent properties
- Easy cleaning & maintenance
- Applicable for many projects
- An energy saving solution
- Well priced & affordable
- Aesthetically pleasing
- Protective against UV light
- Boosting mood & productivity
| Material | Glass-Reinforced Plastic (GRP) |
| Sheet Thickness | 1.5mm |
| Profile Options | Corrugated & Box Profile |
| Light Transmission | Clear / Translucent |
| UV Protection | Special protective film included |
| Custom Lengths | Cut to size on request |
| Integration | Seamless with steel roofing sheets |
Our GRP Roof Lights are designed for seamless integration with our steel box profile and corrugated roof sheets. Created and shaped identically to the steel sheets, they slot in perfectly with no gaps or modifications required.
Our steel sheets are available in a wide range of colour options — blend the transparent lights with various designs, creating a complete aesthetic whole.
With GRP Roof Lights you save on energy — natural light streams into even the deepest nooks of your warehouse, allowing you to spend less on artificial lighting while uplifting the ambiance of your workspace.
Brighten large storage facilities and reduce reliance on artificial lighting throughout the working day.
Provide natural light for livestock and farm storage without compromising on roof integrity.
In — For Less.
Use our free online calculator to get an instant estimate for your GRP Roof Lights — or contact our Bolton team for expert advice on integrating roof lights with your steel sheets.
Ready to Order?
Use our online calculator for an instant sheet estimate, or contact our team in Bolton for expert advice and a personalised quote.
Get Your
Instant
Quote.
Use our online calculator to get an accurate sheet estimate in minutes — no waiting, no hassle. Fast, precise and completely free.
Let's Talk
About Your
Project.
Our team is based in Bolton and available Monday to Saturday. Whether you need advice, a custom quote or a delivery estimate — we’re here to help.
Box Profile
Steel Roofing
Sheets
Answers to the most common questions about our AS 33/1000 Box Profile roofing sheets — from installation to longevity and finishes.
A Box Profile sheet is a steel roofing panel with a trapezoidal ribbed profile. Our AS 33/1000 has a 33mm rib height and a 1000mm effective cover width, making it one of the most widely used roofing profiles in the UK for industrial, commercial and agricultural buildings.
With proper installation and maintenance, our Box Profile sheets can last 25 years or more. Plastisol-coated sheets come with a 25-year guarantee, while Polyester-coated sheets carry a 15-year guarantee — both offering excellent long-term value.
Box Profile sheets have a flat-topped trapezoidal rib that provides a cleaner, more modern industrial appearance and greater structural rigidity. Corrugated sheets feature a traditional wave-form profile that is slightly more flexible. Both are suitable for roofing and cladding, though Box Profile is generally preferred for larger commercial and industrial spans.
Yes — our AS 33/1000 Box Profile sheets are suitable for both roof and wall applications. They can be installed vertically or horizontally for wall cladding, delivering the same weather protection and professional finish on facades as they do on roofs.
For roofing, fixings should be applied through the crown of the rib at every purlin. For wall cladding, fix through the pan (trough) of the sheet. Always use the correct self-drilling, self-tapping screws with EPDM washers to ensure a watertight seal. Contact our team for project-specific fixing guidance.
Our Box Profile sheets are available in a wide range of colours including Anthracite, Graphite Black, Olive Green, Leather Grey and White. They come in three coating options — Galvanised, Polyester (gloss or matt, up to 15-year guarantee) and Plastisol (textured leather-grain finish, up to 25-year guarantee).