Movement joints are filled with material that allows for contraction and expansion.
Floor tile expansion joint.
According to the tile council of north america a body that helps set standards for tile installations when installing outdoor tile there must be an expansion joint every 8 feet to 12 feet in each direction.
Tile expansion joints tile doctor ceramic porcelain and stone tile expands and contracts with thermal and moisture changes in the environment.
Bridge 11 23 2011 expansion and movement joints in tile floors.
Learn all about expansion joints here.
Traffic areas require a sealant with a shore hardness of 35 or greater.
An expansion joint is in the substrate for instance in concrete.
If you tile over an expansion joint then you need to honor that joint in the tile as well.
I can t recall how many times people have told me they heard a loud crack in the night and when they investigated they found that a large area of their tiled floor had lifted an inch or two off the substrate beneath it.
Movement joints are an integral part of any tile assembly and must be incorporated within the tile field at doorsills and at transitions to walls and other restraining structures to allow movement of the assembly and prevent stresses that can damage the system.
For floor applications urethane neoprene or polysulfide are most often used in traffic areas and silicone sometimes where traffic is not a concern.
Floor expansion joint covers for both thermal and seismic applications our floor to floor and floor to wall floor expansion joint systems allow 6 way movement or 4 way movement whilst the surface fixed products generally cover 2 directional movement.
It s quite common to see controlled breaks in concrete and those are usually expansion joints.
The term can be interchanged readily with movement joint without losing any meaning.
It allows for movement in the tile.
Schluter systems prefabricated movement joint profiles protect tile edges and prevent sound bridges and surface water penetration resulting in a permanent maintenance free installation.
According to the ntca national tile contractors association reference manual an expansion joint is a joint through the tile mortar and reinforcing wire down to the substrate by integrating these stress relievers into the tile assembly expansion and contraction takes place without compromising its integrity.
Latham standard loc strip hard flooring expansion joints are capable of absorbing extension and compression equivalent to 16 or 20 of the undeformed width of their elastic neoprene cores.
Thus 12mm joints can be compressed to about 10mm and extended to about 14mm 6mm compressed to about 4 75mm and extended to about 7 25mm.
It is recommended that you err on the side of caution and use the smaller measurement.
A movement joint is in the tile only.
It defines a narrow gap deliberately created through a tile installation which allows a slight movement of the installation itself to occur after its completion without sustaining any damage.
