Fixing and buying guide

What this product is and who needs it

These flashings are specialist roof sealing components for timber-framed buildings where two roof planes meet or where flat and pitched sections join. They are essential for roofers, builders, and experienced DIY installers working on new builds or roof repairs. If you are installing a new roof, replacing damaged flashing, or sealing roof valleys and hips, this product prevents water penetration at high-risk junctions.

Compatibility and sizing

The 55x98cm size is designed for standard roof pitches and typical construction layouts in UK residential and light commercial timber-framed buildings. Before ordering, confirm your roof configuration matches the intended applications: valleys, hips, ridges, or flat roof combinations. Check that your existing roof structure and covering materials are compatible with plastic flashing installation. If your roof pitch or junction dimensions differ significantly from standard layouts, measure carefully or consult your roof design specification.

• Suitable for pitched and flat roof applications
• Designed for valleys, hips, ridges, and flat roof combinations
• Brown wood finish matches standard roof coverings
• Durable plastic construction resists weathering and UV exposure

What is included and pre-installation checks

Each flashing is a single 55x98cm component ready for installation. Before fixing, inspect the product for damage and ensure your roof structure is clean, dry, and free from debris at the installation point. Check that the roof substrate is sound and level enough to receive the flashing properly. Verify that all necessary fixings and sealants are available separately, as these are not typically included with the flashing itself. Confirm roof coverings and surrounding materials are prepared and ready for integration with the flashing.

Installation and fixing

These flashings are installed at roof junctions to create a weather-tight seal between different roof planes or sections. Installation requires careful positioning to ensure water runs away from the junction and does not pool. The plastic construction is durable but must be fixed securely according to your roof type and local building regulations. Work should be carried out by experienced roofers or builders familiar with flashing installation on timber-framed buildings. Ensure all fixings are corrosion-resistant and appropriate for plastic components, and apply suitable roof sealant to create a complete weather-tight barrier.