A synthetic rubber with properties which resist ageing from heat, sunlight and ozone. It has excellent gas impermeability and toughness and remains flexible at low temperatures.

Butynol® is manufactured by combining the petroleum gases isobutylene and isoprene at the extremely low temperature of –100°C. (Rubber Technology–Morton)

Butynol® is marketed by Ardex as a warranted roofing, decking and tanking product and fixed by their trained and experienced approved Applicators.