GSE In-Roof Precompressed Foam Sealant Strip – 5m (20 x 40mm)

The GSE Precompressed Foam Sealant Strip is a high quality, 5m grey foam strip designed specifically for roof integrated solar photovoltaic (PV) systems using GSE mounts. It sits between the flashing and roof tiles, expanding in place to create a durable, weather tight seal at the sides and top of the solar array. This helps keep water out, improves the overall weather performance of the installation, and maintains a clean, professional aesthetic under solar panels.

Why buy this foam sealant strip?

• Improves waterproofing and weather resistance at the edges and top of rooftop solar arrays.
• Precompressed foam expands to fill gaps, ensuring a tighter fit between flashing and tiles.
• Designed for use with GSE in‑roof mounting systems, giving a clean, integrated look.
• Simple to install for trade installers and MCS certified solar contractors.
• Helps reduce the risk of leaks and long term damage around the PV array perimeter.

Suitable for

• Roof integrated  solar PV installations using GSE mounting systems.
• Domestic and commercial pitched roofs with standard tile or profiled roof coverings.
• Use at the top and side edges of solar arrays to seal between flashing and roofing material.
• Installers and solar contractors looking to enhance the waterproof detail of GSE based installations.

Key features

• 5m grey precompressed foam strip (length: 5m, cross‑section: 20 x 40mm).
• Expands between the flashing and roof tiles to form a tight, resilient seal.
• Engineered for use with GSE in‑roof PV mounting components and flashing profiles.
• Lightweight, easy to handle and cut to length on site.
• Non corrosive foam material suitable for long term exposure in typical UK roof environments.
• Helps maintain a neat, concealed under array profile for a more premium finished look.

Technical specifications

Upgrade the weather tightness and finish of your GSE based in‑roof solar installations with this 5m precompressed foam sealant strip. It’s a practical, value adding accessory for both homeowners investing in solar and trade professionals who want a neater, more resilient installation around the array perimeter.