The sealant used in expansion joints should achieve a minimum shore a hardness of 35.
Ceramic tile expansion joint detail.
Latasil or urethane sealant placed over a closed cell foam backer rod.
Available in clear bronze finish.
To help protect your tile from future damage you ll need to include expansion joints into your installation.
Recognizing that tile is a facade movement joints are needed to eliminate stresses that can occur between the substrate and the tile due to differing amounts of expansion and contraction.
Where should movement joints be placed.
An expansion joint is needed at least every 10 linear feet and an expansion joint at least 1 4 wide is needed around the perimeter of the installation if you re meeting to a solid surface or a wall.
Tcna s handbook mandates a soft movement joint every 20 25 feet 6 7 6 m for interior installations closer if exposed to sunlight and moisture and every 8 12 feet ba 2 4 3 6 m for exterior exposure installations ej171 09.
Possibly the best type of expansion joint material that can be used is a flexible silicone e g.
Schluter systems prefabricated movement joint profiles protect tile edges and prevent sound bridges and surface water penetration resulting in a permanent maintenance free installation.
Height to match tile stone or wood thickness.
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.
Over any isolation or control joints in the concrete.
If you tile over an expansion joint then you need to honor that joint in the tile as well.
It is important to note this detail for both ceramic tile and stone applications recommends a movement joint be placed at one or both ends of the tile bridging the underlying crack as recommended by the membrane manufacturer.
Manufacturer ceramic tool company.
It allows for movement in the tile.
It is best to achieve a two sided bond only to the flanks of the open joint in the tile.
An expansion joint is a strip of flexible material in this case caulk that lets tile expand and contract with changes in temperature.
It s quite common to see controlled breaks in concrete and those are usually expansion joints.
Here s where to put expansion joints.
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.
An expansion joint is in the substrate for instance in concrete.
A movement joint is in the tile only.
Anywhere tile meets a vertical surface like steps or the foundation of your house.
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.
