Hot bitumen to finishing caulked underwater plank seams.
Comes in chunks.
The pitch must be heated to liquid (approx. 180°C) and squeezed into the hull seams.
We supply in blocks (in cardboard boxes).
Please download our instructions No. 8 "caulking" (only in German, we regret) at "Downloads & Information" below.
Must not be used for deck seams, as it may soften in full sunlight.