Download here our 'All you need to know about the bituminous underlay' guide
The strength of a bituminous waterproofing system lies in its dual-layer structure.
Due to the variety of underlays, a crucial link is always laid between the underlying roof components and the top layer. This guarantees the architect’s creativity and the fitter’s implementation flexibility in all  circumstances. As a result, this layer demands the necessary attention.
Find out everything you need to know in our guide!
- How do you determine the most suitable underlay?
- What are the installation conditions?
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