Redpath sealant (used for the overlapping Redpath gutter design), or general sealant use. Supplied in applicator tubes to fit a standard Caulking Gun. Grey, 300ml cartridge.
Gorilla Gutter Solvent industrial grade cleaner dissolves grease and dirt and fast evaporation.
With a clean rag, wipe the solution across the top and underside surface end of the gutter.