Deks Fast Flash 5m x 370mm - Self Adhesive Roof Flashing for Roof Integrated Solar PV

Deks Fast Flash 5m x 370mm is a high performance, lead replacement flashing designed specifically for roof integrated solar PV installations. Engineered from a specially formulated polymer rubber reinforced with an aluminium mesh, it offers exceptional flexibility, durability and a clean, low profile finish that blends discreetly with most roof coverings. Ideal for in roof systems such as Sol Fit and GSE, this self adhesive flashing simplifies waterproof detailing around roof penetrations and PV arrays while eliminating the need to handle traditional lead.

Why buy Deks Fast Flash 5m x 370mm?

• Fast, tool free installation: The fully self adhesive backing allows quick, secure bonding to the roof deck, reducing labour time by up to 50% compared with conventional lead flashing.
• Weather and UV resistant: UV and ozone proof construction ensures long term performance in all UK climates, with a specified replacement guarantee of up to 20 years when installed to manufacturer guidelines.
• Lead free and eco friendly: A sustainable alternative to lead based flashing's, helping projects meet environmental standards without compromising on durability or weather tightness.
• Flexible and easy to work with: The polymer rubber/aluminium mesh composite conforms easily to complex roof profiles, ridges, hips and around PV module edges, even on close pitched profiles.
• Low visual impact: Supplied in a sophisticated black finish that blends unobtrusively with most modern tile and slate style roofs, maintaining the aesthetic of roof integrated solar arrays.

Suitable for

• Roof integrated solar PV systems, including Sol Fit and GSE in roof mounting solutions.
• Sealing large roof penetrations where standard pipe boots or Dektites are not sufficient.
• Providing continuous waterproof borders along the bottom or top edge of PV arrays instead of traditional metal capping.
• Most common roof coverings such as concrete tiles, clay tiles, fibre cement, metal and slates.
• Roofs with a minimum pitch of 5°, typical of many domestic and light commercial properties across the UK.

Key features

• 5 metre long roll, 370 mm wide - ideal for continuous flashing runs along solar PV arrays or roof penetrations.
• Self adhesive backing that bonds directly to clean, dry roof decks and battens, eliminating the need for additional fixings or tapes in many applications.
• Polymer rubber core reinforced with aluminium mesh for strength, tear resistance and excellent pliability over complex profiles.
• Black finish designed to match the appearance of common dark coloured roof materials and integrated PV components.
• Can be painted with 100% acrylic low sheen exterior paint if required, for colour matching or protection where water may run from copper or bitumen onto the flashing.

Technical specifications

The Deks Fast Flash 5m x 370mm roll is supplied ready for site use and is especially suited to both domestic homeowners and trade installers looking for a faster, safer and more professional alternative to traditional lead flashing for roof integrated solar PV and other roof penetration detailing.