Mastic asphalt has been used as a structural damp-proof for over 100 years.
A lot of the pavements and staircases in and around London and home counties are covered in asphalt. Mastic asphalt is a great product as it is totally seamless and can be formed around almost any shape. As an upstand detail against a building the asphalt is tucked into the chase line or terminated with render or a separating flashing with 150mm in heights. The height will allow for ‘splash back’, this happens when the rain hits the floor and can create a damp spread up the wall.
The colour of the asphalt once the sun has bleached and drawn the bitumen out of the mastic asphalt, it will turn grey in colour, this colour change blends in with a lot of the buildings and creates a ‘heritage’ look.
As a product asphalt will create a high-level damp course that will last in excess of 20 years; the product is a lot more robust than a lot of other products on the market as this product has over 100 years of tested service.
For more interesting information about mastic asphalt please read more of our blog posts. An index of all our blog posts covering all aspects of asphalt can be found by clicking on the following link: Mastic Asphalt Blog.