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Avoid failures in bathrooms and wetrooms with BAL Waterproof 1C


W


hen tiling in wet areas such as bathrooms, showers, wetrooms, pools, etc. it is vital to make the correct


product selection to avoid costly failures. Ensuring your wetroom, bathroom or shower


installation is fully waterproof is perhaps the most important part of any developer’s work, because tiles, tile adhesive and tile grout on their own will not inherently protect against water damage. Did you know that the British Standards (BS 5385) and NHBC Standards 2023 both state, that in wet areas or areas of repeated or persistent wetting, backing surfaces should be protected by a suitable tanking system. BS 5385 Part 4 states that the use of a ceramic


tile together with an impervious tile grout and tile adhesive are NOT a substitute for a tanked or waterproofed bath, shower or wet room installation. The eff ects of water damage are well known and documented. Therefore, using a suitable waterproofi ng (or


tanking) product – such as new BAL Waterproof 1C - is a prerequisite for a wet room installation, either within the building structures or ideally on the substrate surface prior to the application of ceramic of natural stone tiles. Waterproofi ng on the substrate surface is


often ideal as this ensures water is prevented from tracking through a screed for example into other areas.


HBD02_BAL_Interiors - Bathrooms_HPAdv.indd 1 In a wet room, waterproofi ng should be


specifi ed on both walls and fl oors. Available now, BAL Waterproof 1C is a


ready-mixed tanking solution that can be used without priming on most common substrates* and is ready to tile after only two hours! Formulated with fi bre-strand technology


for improved strength, it can be applied in one-coat on walls and fl oors with a brush, roller or 4mm notched trowel. No additional tapes or matting are needed


as it is crack-bridging from 2-3mm. 01782 591100 www.bal-adhesives.com


14/02/2024 15:27


Acoustic floor build-up ensures student accommodation exceeds document E standards


C


MS Danskin Acoustics has worked with acoustic consultants


Atelier


Crescendo to arrive at a floor build- up which has contributed to achieving acoustic performance significantly exceeding Approved Document E ‘Resistance to the passage of sound’ 2003 standards at new student accommodation for St Catharine’s College in Cambridge.


The accommodation provides two new houses and communal spaces for students to work and socialise. The project was designed by Cottrell & Vermeulen


and the main contractor was Conamar Building Services. Designed with sustainability in mind,


away carbon by using it as a long-term construction base and it reduces the use of concrete in floors. However, because CLT is around one third of the mass of concrete, it presents challenges acoustically.


Its sound Architecture,


the student accommodation has mass timber frames (mostly Cross Laminated Timber), triple-glazed windows and air-source heat pumps.


timber


Internal base floors are cross laminated (CLT),


which supports sustainable ethos behind the design. the CLT is increasingly used as it helps in locking


reduction index is poorer and its damping properties from impacts are also lower than concrete, therefore it requires an acoustic strategy to limit impact and airborne sound travelling through. After taking into account the BREEAM® requirements, the criteria to be met for St Catharine’s was that the airborne noise reduction must be over 48 dB DnTw and the impact noise must be measured as under 59 dB LnTw.


CMS Danskin Acoustics designed and supplied a floor/ceiling build-up using recycled materials to help improve the floor mass and enhance its impact absorbing properties. The strategy involved double REGUPOL impact isolation layers. Layers of 3 mm REGUPOL sonus eco, 18 mm Versapanel®


from Euroform ADF03_CMS_Insulation - Acoustic_Half Page Advertorial.indd 1


and 15 mm REGUPOL sonus core were used to isolate impact sound, followed by a 32 mm Smartspan, which is finished with a timber floorboard or plywood underlay with vinyl. CMS Danskin Acoustics also specified


and supplied Kinetics IsoGrid hangers, a high performance


hanger


ceilings where the maximum noise reduction performance is required.


01925 577711 www.cmsdanskin.co.uk 14/03/2024 11:33 used for suspending


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