TAMKO TWM-1 is a high-quality, trowel-grade, rubberized bitumen mastic that dries to a durable but pliable seal allowing for minor expansion and contraction.

TAMKO TWM-1 has multiple uses including finishing the edge of seams, overlaps, patches and terminations of the properly sealed TAMKO Waterproofing Membrane. This product is also suitable for use in roof flashing applications and contains additives for use in wet and dry conditions.


Also available in handy 29-ounce and 10.5-ounce tubes