HOW TO INSTALL ONDULINE CLASSIC for CLADDING
ONDULINE CLASSIC isn't just for roofs. Its corrugated profile and bitumen-saturated fibres make it an excellent external finishing coat for walls of timber leisure buildings*, offering:
Lightweight & Easy to Handle: The sheets are significantly lighter than traditional materials, making installation fast and simple, even for DIY projects.
Efficient: Made from 50% recycled cellulose fibres combined with bitumen.
Durability: Rot-resistant, rust-resistant, and high wind resistance.
Thermal & Acoustic Comfort: Reduces rain noise and provides better insulation than traditional metal sheeting.
CLASSIC for Cladding Installation Conditions
- Suitable for 'Small Detached Non-Residential Leisure Buildings' only with a maximum height of 10m.
- Ensure the existing cladding surface is in good, sturdy condition and suitable to fix to.
- Tools you will need: Hand Saw, Lubricant Spray and Safety Gloves
- Installation is possible on full cladded surface or battens.
- Cladded or timber battened surface must be a minimum of 30mm to ensure fixings do not penetrate to the inside of the building.
* Small detached non-residential buildings such as:
• Leisure outbuildings / home offices
• Agricultural buildings
• Garage workshops
• Animal housing
Not for use on buildings with sleeping accommodation.
Please note that Onduline bitumen corrugated sheets are classified as Class E under the European Reaction to Fire standard (EN 13501-1). ONDULINE CLASSIC sheets are considered combustible and should only be installed on detached leisure buildings, as listed above.
Important Regulatory Compliance
Please ensure that your building project—the sizing and location of the small detached non-residential building—is in full accordance with the conditions stipulated in the applicable national Building Regulations. Compliance with these regulations is essential for the lawful and safe installation and use of ONDULINE CLASSIC cladding sheets.
For use on roofs with a minimum pitch of 12o and a maximum slope length of 15m, or as cladding up to 10m in height – see install guide for further details.
Please consult with your building contractor to confirm suitability and for installation.
Installation Steps: ONDULINE CLASSIC for Cladding
Step 1: Prepare the Structure
ONDULINE® CLASSIC Sheets can be installed on a fully cladded surface or a timber structure.
A. FULLY CLADDED SURFACE
B: TIMBER STRUCTURE
In both scenarios A and B, ONDULINE® SCREW fixings must always have a bite of a minimum 15mm into into the timber structure as shown.
Step 2: Fix the Sheets
Ensure the sheets are fixed at a minimum 200mm separation from ground level.
If necessary, cut the sheets using a lubricated hand saw. Hold the ONDULINE® CLASSIC sheet against the existing structure. Use four ONDULINE® SCREW fixings to pin the sheet in place temporarily as show in the picture. Always fix at the top of corrugations.
Step 3: Ovelap the Sheets
Rest the second ONDULINE® CLASSIC sheet against the existing structure and use another four ONDULINE® SCREW fixings to pin the sheet in place temporarily. Overlap the sheets by one corrugation.
Step 4: Correct Overlapping
Start fixing sheets at the opposite to prevailing winds end of the roof.
Overlap the second sheet by one corrugation for a complete seamless seal.
Step 5: Fixing the Sheets
Fix the rest of the ONDULINE® fixings.
All corrugations should be fixed at the top and bottom sections. Every other corrugation should be fixed in between.
Note: Always fix the overlapping corrugation.
Step 6: Staggering the Sheets
When stacking sheets vertically, always stagger your joints for better structural integrity; do this by starting your second course with a sheet cut in half. Each row should overlap the one below by at least 100mm. Please ensure the total cladding height does not exceed the 10-meter safety limit.
Download the full installation steps below
CLASSIC for Cladding Installation Conditions
- Suitable for 'Small Detached Non-Residential Leisure Buildings' only with a maximum height of 10m.
- Ensure the existing cladding surface is in good, sturdy condition and suitable to fix to.
- Tools you will need: Hand Saw, Lubricant Spray and Safety Gloves
- Installation is possible on full cladded surface or battens.
- Cladded or timber battened surface must be a minimum of 30mm to ensure fixings do not penetrate to the inside of the building.
Installation Guide: Installing Onduline Classic sheets for Cladding
Download the full installation guide on how to install ONDULINE CLASSIC for cladding of leisure buildings, here
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ONDULINE® CLASSIC sheets are widely available to buy from a number of retailers and merchants.
Click to find a stockist or find our products online, here.