How do you check tile movement joints in Qardho?

A tile movement joint is a deliberate gap in a tiled surface that lets the tiles and the background move without cracking. On a Qardho project, checking tile movement joints competency means asking for the joint layout, the sealant product data and a recent completed floor, then walking that floor with the client before any fixing starts.

What does a movement joint actually do?

Tiles, screed and concrete all move with temperature and moisture, and a movement joint gives that movement somewhere to go. In a hot, dry inland climate the surface can warm and cool sharply between day and night, so a large tiled floor without joints can build up stress until a tile or the screed cracks. General practice is to divide large fields of tiles with joints at set spacings recommended by the tile or adhesive manufacturer, and to place joints at changes of background, at perimeters, and where a new slab meets an old one. The correct spacing, width and sealant depth depend on the tile type, the substrate and the movement expected, so confirm them against the project specification or the manufacturer's written instructions. Ask the supplier for the sealant data sheet and confirm the joint width it allows.

Why does a claim without evidence fail in Qardho?

A verbal claim that joints are understood proves nothing, because the failure appears months later as cracked tiled surfaces. A tiler can be genuinely skilled at laying tiles and still not know how to set out a joint layout, because joint design is a different task. In many markets the tiler is paid per square metre, so a joint that takes time to form and seal is easy to leave out. The client may only see the finished surface, which looks correct until the first hot season or the first wash-down. The gap is not dishonesty by default; it is a missing document, a missing drawing and a missing inspection. Ask the contractor which joints will be formed, where, and who will inspect them before grouting.

How do you verify tile movement joints competency in Qardho?

Set the check before work starts, because joints that are omitted cannot be added later without lifting tiles. Do these in order:

• Request a joint layout drawing for each tiled area, showing joint positions, widths and sealant type. Ask who prepared it and against which manufacturer instruction.
• Ask for the sealant and adhesive product data sheets, and confirm the sealant is the correct type for the joint width and for the expected movement.
• Ask to visit a recently completed tiled floor by the same team, ideally one that has been through a hot season. Look at the joints, not the tiles: are they straight, continuous, clean and sealed?
• Ask the site supervisor to show the inspection record for joints before grouting, or agree on a hold point where you or your representative inspect and sign off before grouting continues.
• Ask the municipal engineer's office whether it keeps records or requirements for tiled floors in commercial buildings in Qardho, and follow whatever the project specification states.

If the contractor cannot produce the layout or the product data, treat the joints as unverified. That is not a conclusion about the team; it is a gap you can close by paying for a joint layout or by writing the joints into the scope with a hold point. For a wider floor, ask the engineer to confirm joint spacing in writing rather than relying on a rule of thumb.

What to do next

Before you sign or release the next payment stage, send the contractor a short written request: the joint layout drawing, the sealant data sheet and one address of a completed tiled floor you can visit. Check what your contract allows before you change any payment stage. If the documents do not arrive, ask the project engineer to write the joint locations and the pre-grouting inspection into the scope.