When grout and water are mixed together a chemical reaction called hydration is started.
Grout crumbling between tiles.
Doesn t wet the joints before applying the grout.
Rinse the sponge frequently in clean water to get rid of the grout but remember to use a damp not wet sponge.
If there is no space between your tile and walls it will force all the pressure into your tile.
Put on safety glasses to protect your eyes from flying grout pieces and dust.
Most grout is cement based and comes in sanded and un sanded varieties.
If the width is 1 8 of an inch or smaller use an unsanded grout.
Measure the space between the tiles.
It is important to clean off excess grout from the face of the tiles with a damp grouting sponge before it hardens completely.
Use an old paintbrush to dust out the joint.
So the grout might just be evidence that the tiles are moving.
Wipe off excess grout from the face of the tiles and smooth the surface of the grout with the squeegee.
Scrape out all of the crumbling grout.
Inferior grout can be a problem.
Spread sheets of newspaper or a drop cloth over the ground in the work area if you are working on a tiled surface that is not the floor if.
This fix is only practical for interior tile floors and when the gaps between the tiles are 1 4 in.
Powdery or crumbling grout is likely to occur if the tiler.
For every application there are specific spans of tile which can be installed before a soft joint is required.
If the space is larger than 1 8 of an inch use a sanded grout.
You do not have expansion joints in your tile.
This will cause cracking grout and eventually tenting of your tile.
At most tile specialty shops you can get or order sanded caulk most floor grouts are sanded that will closely match your existing grout color.
A grout saw is a small handheld blade that fits between the gaps in tile.
Vacuum all powdered grout and grout chunks from the joint.
While this type of grout can be less expensive it is porous by nature and needs to be properly sealed to keep moisture from seeping into the grout and beneath your tiles.
Use a grout saw that has a blade with a width that will fit between the tiles you re working on.
But if the tiles were not adhered well and they re shifting that s going to break off little pieces of grout as a matter of that action of that movement.
Grout is available as sanded or unsanded.
It is this reaction that causes the grout to go from a thick paste to a hard tile joint.
The bottom of the joint and sides of the tile need to be dust free to get the best bond.
Doesn t mix the grout to a consistent thick and creamy paste.