MOVEMENT JOINT LOCATION
If possible, movement joints within the structural concrete shell should be avoided unless there are any over-riding reasons for them.
Older pools could have movement joints within the pool shell, but these might be a potential source for water leakage.
Movement joints in tiling will be necessary and should be incorporated as outlined in BS 5385: Part 4. Movement joints should not come to a “dead end” and should be sited as follows;
a) In the pool lining around the perimeter at the junction of the base and sides of the pool tank.
b) At vertical corners and at any change of plane in the bottom
c) Intermediate movement joints should be inserted down the sides and across the bottom in a continuous loop at 6 m intervals.
N.B Intermediate joints are not required for mosaics.
d) In older pools, where structural movement joints were incorporated, these should be continued through to the tiling finish.
e) Joints should coincide with the structural junction of the pool shell and the surround slab and where pool surround tiling abuts walls, drainage channels and other features.
N.B. Movement joints for pool hall walls and intermediate joints for the pool surround should be incorporated as outlined in BS 5385: Part 1 and BS 5385: Part 3.
SEALANT JOINTS IN SWIMMING POOLS
Epoxy based sealants and high polymer content polysulfide sealants are recommended.
High performance one-part silicone sealants designed for use in swimming pools and underwater applications are also available. The sealant selected should not only accommodate the movement in the tiling but also resist the chemical attack due to chlorine and other additives used in the water and in cleaning agents.
Sealants used in swimming pool tanks and surrounds should be fit for purpose and need to
resist the effects of chemical treatments used in swimming pools and to vandalism, both of which need to be considered particularly in public swimming pools.
TECHNICAL ADVISORY SERVICE
For free expert guidance on the use of BAL products, or any aspect of ceramic tiling with BAL products, contact the BAL TECHNICAL ADVISORY SERVICE on 01782 591120.
THE BAL 25 YEAR GUARANTEE
BAL products are supplied with a 25-year product guarantee. For further details and/or copies please contact the Company’s marketing department.
The customer must verify the suitability of any information, opinion, recommendation or advice (“information”) provided by the Company for the particular application for which any goods are intended to be used and the Company accepts no liability (whether in contract, tort or otherwise) whatsoever for any loss, damage or expense arising from the misuse of any information it supplies, nor for the use of any information in or for applications which are unsuitable or inappropriate. Building Adhesives Ltd operates a continuous research and development programme and reserves the right to alter or to update information from time to time.
“Note: Any advice, opinion or information is given to assist the use of the Company’s products on the basis that the user will ensure its suitability for the application intended. In particular the Company cannot accept liability for loss or damage which may arise from incorrect use of its products or from poor workmanship. The Company operates a continuous research and development programme and reserves the right to update information without notice.”
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Articles in this section
- TN 01.23 - Use of Cement Based Products in Warm Weather
- TN 02.23 Tiling to Asphalt Floors
- TN 03.23 - Use of Primers and Bonding Agents
- TN 04.23 - Ceramic & Natural Stone Floor Tiling to Heated Sub-floors
- TN 05.23 Tiling A Small External Patio & Ground Floor Terrace
- TN 06.23 Common Issues With Grouting
- TN 07.23 Deflection of Sub-Floors and Rigid Finish
- TN 08.23 Screed Drying Times
- TN 09.23 Types of Movement in Tiling Installations
- TN 10.23 - Heavily Trafficked Floors & Hard Wheeled Traffic