Fixing and buying guide

Who this product is for

These flashings suit both professional builders and serious DIY customers installing roof windows or managing multiple roof penetrations in timber frame construction. They are appropriate for domestic and light commercial projects where reliable weatherproofing is essential.

Compatibility and sizing

The EKJ CK04 S0021E is engineered for timber frame construction systems and works in conjunction with standard roofing materials. Check that your roof slope does not exceed 30 degrees and that your total project length does not exceed 10m. The 55 x 98cm dimensions suit CK04 window sizes; verify your window model matches this specification before ordering.

• Maximum roof slope: 30 degrees
• Maximum project length: 10m
• Material: PVC construction
• Available timber grades: Oak, pine and others

What is included and preparation

Each flashing unit is supplied ready for installation. Before fitting, inspect the product for any damage in transit and ensure your roof structure is sound and level. Check that the timber frame is dry and free from debris. Confirm roof slope angle and measure your installation length to ensure it falls within the 10m maximum.

• Inspect for transit damage before installation
• Verify roof slope does not exceed 30 degrees
• Ensure timber frame is dry and clean
• Measure total project length to confirm it is within 10m limit

Timber grade selection

Choose your timber finish based on your aesthetic preference and exposure conditions. Oak and pine options are available, each offering different durability characteristics and appearance. Oak provides greater weather resistance, whilst pine offers a lighter finish. Select the grade that matches your existing roof timberwork or desired final appearance.