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Key considerations for a watertight wet room design


easier to keep clean and a fantastic way to open up space, making it especially great for those with limited mobility. Furthermore, wet room systems are not limited in sizing, like shower trays often are, so they are also a great solution for awkward or tight spaces such as loft bathrooms or alcoves. Whether you are considering the jump to wet rooms or just looking for inspiration, wedi - the leading manufacturer of wet room solutions since 1983 – offers valuable insights on perfectly executed wet room installations. Wet rooms are a big project to take on and it is extremely important to be aware of the British Standard (BS) requirements and of the limitations


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et rooms give the impression of greater space along with a feeling of luxury. They are


of popular materials. According to BS 5385 Part 1 “materials that are subject to movement from changes in moisture content should be avoided”. Therefore, timber sub-oors, plywood and other wood-based sheets or boards are not suitable for tiling in wet, frequently damp, or high humidity areas.


THE PRINCIPLE OF WET ROOM DESIGN IS THAT THE ENTIRE SPACE IS ‘TANKED’ OR WATERPROOFED BEFORE TILING. Substrates should always be protected with proper tanking such as with waterproof sheet membrane, applying a paint-on liquid wall membrane or with a completely watertight tile backer board. “Traditional tanking of a wet room is a multi-step process which entails seeral layers of waterproofing to ensure an excellent seal. Commonly


used tilebacker boards such as cement boards, gypsum boards, magnesium oxide and expanded polystyrene (EPS) boards require additional waterproofing. On the contrary, wedi tile backer boards made of extruded polystyrene (XPS), are 100% waterproof and hence no additional tanking is required. What’s more, they are also coated on both sides with a glass fibre mesh reinforced cement coating to allow for direct tiling and so, priming wouldn’t be required either. Additionally, our boards can also be directly bonded to stud frames, so there is no need for mechanical fiing that would entail laborious sealing steps oer the penetrations. Our industry famous versatile wedi 610 adhesive sealant takes care of not only the waterproof adhesion to frames, but also of the bonding and sealing of wedi


09/05/2023 10:24 may/jun 2023


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