What is EJ171?
Detail EJ171 states all underlying movement joints in the substrate need to continue through the tile assembly. Typically, this means that in addition to honoring the substrate movement joints, the tile assembly needs additional movement joints within its assembly.
How far apart should expansion joints be in tiles?
Joints must also be formed within the tile field, every 12 to 16 feet in each direction for exterior floors and for interior floors exposed to sunlight. These are to be kept clean of mortar and grout when the tiles are set, and not created by saw-cutting after the floor is in place.
Does porcelain tile need expansion joints?
“One of the most basic and important facts an installer should know when working with ceramic (including porcelain, glass, and natural stone) tile is to always have expansion joints in place. If expansion joints are not part of the installation, failure is lurking in the shadows waiting to strike.
What are tile movement joints?
A movement joint or ‘expansion joint’ is an intentional interruption in the tile or stone surface to allow for movement in the wall or floor. Hard flooring expands and contracts so it’s important to use a movement joint for your tiling project to prevent the tiles and grout from cracking or the tiles de-bonding.
Is expansion joint necessary?
Expansion joint failure can happen for several reasons, but regardless concrete needs a buffer as it goes through the natural cycles of expansion and contraction. So, this has always been the case, and this is why expansion joints are necessary.
Do you leave expansion gap for tile?
The TCNA Handbook recommends allowing for expansion and contraction in every tile installation. In small rooms, a gap at the perimeter of the room (often hidden by baseboard or shoe molding) is sufficient. For larger areas, the movement joints will be visible.
Can porcelain tile be laid without grout lines?
Well, the short answer would be a simple no – you should not attempt to install tile without grout.
How much gap do you leave between tile and wall?
The Tile Council of North America recommends at least a quarter-inch gap between the tile floor and the walls. Never fill this gap with grout, because tile grout is not flexible. Instead, fill it with an elastic material capable of sustaining the movement of the floor and the movement of the wall.
How often do you need a movement joint in brickwork?
In order to avoid the detrimental effects of differential vertical movement between the inner and outer leaves of a wall a horizontal movement joint should be provided at no more than every third storey or 9m, whichever is the less.
How do you lay tiles without a gap?
How to Lay Tile Without Grout Lines
- Purchase rectified tiles.
- Lay out the tiles directly onto the area where you will install them.
- Mark any tiles to be cut with a pencil and straightedge.
- Take the tiles up in the opposite order you set them down.
- Press the tiles into the mortar in the same order you laid them out.
Does cement need expansion joints?
Concrete expands and contracts with changes in temperature and moisture. If not properly controlled, cracks can begin to appear. Placement of concrete control joints and expansion joints are crucial when designing and pouring concrete slabs and sidewalks.
Does all concrete need expansion joints?
Expansion joints are virtually never needed with interior slabs, because the concrete doesn’t expand that much—it never gets that hot. Expansion joints in concrete pavement are also seldom needed, since the contraction joints open enough (from drying shrinkage) to account for temperature expansion.
Do you grout tile against the wall?
When you install ceramic tile on the floor, you must take care to create an expansion joint between the walls and the tiled floor. The Tile Council of North America recommends at least a quarter-inch gap between the tile floor and the walls. Never fill this gap with grout, because tile grout is not flexible.
Do you tile the floor first or walls?
Whilst you can tile either one first, popular opinion based on experience is that is is easier to tile the walls first and then the floor, if you are tiling both in a room. This ensures that you keep the floor tiles cleaner as you won’t be doing so much work around them once they are installed.
What is the smallest grout line for porcelain tile?
1/16″
Smallest size grout lines should not be less than 1/16″. This is an acceptable space that can be properly grouted. When the space between tiles is so little like 1/32″ which is often referred to as “credit card lines” or “penny lines”, it’s not possible to fill that space all the way through the bottom of the tile.
Does porcelain tile need to be sealed?
The surface of most ceramic and porcelain tile does not need to be sealed, although some require a light application of a penetrating sealer to fill the micro pores on the surface of the tile. However, the grout joint between the tiles is usually very porous and generally made of a cement-based material.
Can you use caulk instead of grout between tiles?
Grout is only used to fill the joints between tiles, while caulk can seal seams in many spots—along baseboards and crown molding, on windows to stop leaks and drafts, and anywhere two construction materials meet, even on outdoor concrete.
Can you lay tile without spacers?
Tiling without spacers is not only extremely difficult but also time-consuming. You need to stop constantly and adjust the tiles so that you get an even layout. With a tile spacer, on the other hand, you will spend less time agonizing over the width and accuracy of your lines.
How long can you build a wall without an expansion joint?
Movement joints in internal walls are not normally necessary for single dwellings unless the walls are straight and unbroken and over 6m long, in which case the block manufacturer’s recommendations should be adopted.