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Mastic asphalt is a DPM (damp proof membrane). It has been successfully used as a damp proofing membrane for over 100 years. Some of the buildings which this historic material has protected include iconic landmarks such as ‘The Tower of London’, ‘Buckingham Palace’ and ‘Canterbury Cathedral’.
What makes mastic asphalt an especially attractive damp proofing membrane is it is totally seamless and can form around the most complex of details such as soil vent pipes, plant machines and stair balustrades. Additionally, it is carbon zero rated and 100% recyclable. This makes mastic asphalt an environmentally friendly damp proofing membrane.
Mastic asphalt is an excellent damp proofing membrane which should last more than 20 years if maintained correctly. The correct maintenance of a mastic asphalt damp proofing membrane will vary depending upon the application of the asphalt. This is because a mastic asphalt damp proofing membrane is suitable for a range of applications including asphalt flooring, steps, and roofing. For example, typical maintenance of a damp proofing membrane on an asphalt roof would be the application of solar reflective paint every 3-5 years, annual roof surveys and repairs to any defective areas of the asphalt roofing system.