Waterproof the a.b.e. way DIY PRODUCT SELECTOR GUTTER LEAKS bituseal plastic – General purpose bitumen mastic sealer. super laykold spray and seal – Waterproofing in a spray can. super laykold – A rubberised bitumen waterproofing that holds water. super laykold tape – A peel and stick waterproofing tape. abe PU liquid rubber – High performance PU liquid applied waterproofing membrane.