Related Clues:
- Finish protector
- Proofing agent works, though not initially, under water
- Material blocking leaks
- Slender wedge for filling a space
- Area of water left worker needing material for fixing leaks
- Leakage preventer
- Mason's gap filler
- Two animals closer?
- It stops worker going on main line
- Blubbery creature atop insect creates sticky stuff
- Excited as leant closer?
- It stops leaks from Bennett in television
- Carpenter's space filler
- Polyurethane, e.g
- Waterproofing stuff