GRP Bonding Gutter, also know as a 'secret valley', gives a weatherproof seal between adjacent roofs. It will join any combination of double lap or interlocking Slates, along with clay and concrete Tiles, with minimum disturbance to the adjacent roof.

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Bonding Gutter is a lightweight and flexible product, used on a daily basis by roofing & building contractors, and would be recommended as a stock item.The packs should be stored flat, on a smooth, clean, dry surface; under cover and protected from sunlight.