Waterproofing is usually applied under the screed (semi-dry or wet) in order to prevent the penetration of moisture from the underlying layers into the screed and thus protect the surface from moisture and possible damage.
Polyethylene films
Thin films of polyethylene are a simple and affordable option for waterproofing under screed. They prevent the penetration of moisture and steam from the base into the screed. This material is especially suitable for semi-dry screeds where the main requirement is to prevent moisture penetration.
Waterproofing membranes
There are several types of waterproofing membranes that are specifically designed for use under screed. These membranes usually have higher strength and damage resistance, which can be important when applying screed.
Liquid waterproofing
Bituminous materials
Bituminous rolls or tapes can be used for waterproofing under screed. They have good resistance to moisture and chemicals.
It is important to choose a waterproofing material that meets the conditions and requirements of a particular construction project. It is recommended to consult with engineers or construction specialists in order to choose the most suitable type of waterproofing and to carry out the laying process correctly before pouring the screed.
