Movement
Joints - Location
BS 5385: Part 1 1995 Section 3 Design Clause 3.5 Movement
Joints 3.5.2 Location
In detailing the location of movement joints in tiling
the designer will normally specify they are positioned
in the following locations ……(b) where tiling
abuts other materials ……(e) where stresses
are likely to be concentrated, for example at changes
of alignment.
BS 5385 : Part 4 : 1992 Section 2
Clause 6 Damp and Wet Conditions 6.3
In installations where contact with water is only
intermittent, and the installation has an opportunity
to dry out between periods of use, e.g. in domestic
showers, the following points should be noted.
.....(d) Movement joints may be required
and should be considered at design stage. (e) Special
attention should be paid to sealing the gaps between
wall and base, particularly where the installation
is located on a suspended floor.
Comment: It is clear from the British
Standards guidelines that tiles terminating and abutting
a bath or shower tray ledge in a typical domestic
shower is a Movement Joint
.