Hot Melt Roofing

Langley HM-40 system is a robust, durable and extremely fl exible monolithic, elastomeric hot-melt waterproofing system designed for both flat roofs (including ‘zero falls’) and structural waterproofing.

A fully bonded system, HM-40 is the ultimate waterproofi ng solution for protected roofs, green roofs, terraces and podium decks that carries a 40-year durability statement.

This system is for new-build projects where a protected membrane or green roof system is required. Primarily used for concrete substrates, it can also be used on plywood and for a warm (inverted) or cold roof configuration, protection can be either in the form of polystyrene insulation (warm roof), round washed pebbles, paving or a green roof.


Extremely robust, yet flexible, monolithic elastomeric waterproofng system, ideal for use as a base for a green roof.


Related Case Studies


Black Horse Lane

Contractor:  T and T Roofing Limited SYSTEM USED: HM-40 Hot Melt System Size:  2,104m² Walthamstow continues to be the centre of a large-scale modernisation and... > Read more


Whitehall Riverside Hotel (Premier Inn, Leeds)

Langley was selected to specify a roofing solution for this new inner city hotel and worked closely with the client’s architect when specifying, from inception through to... > Read more