How do you check tile bedding competency in Berbera?

A hollow sound under a floor tile means the bedding did not bond or compact across the whole tile. You cannot see this after fixing, so tile bedding competency risks in Berbera have to be checked before and during laying, not after handover. Ask the tiler to show a method statement, then watch coverage on the first few tiles and tap test once the bed cures.

What causes a hollow tile on a Berbera floor?

A hollow tile sits on voids in the mortar bed or on a bed that has debonded from the slab. Bedding is spread to a measured thickness, the tile is pressed and tapped down, and mortar has to squeeze out at the edges to prove full contact. If the mix is too dry, spread too thin, or the tile is laid without back-buttering, the bed bridges the tile instead of supporting it. On a hot slab in Berbera the mortar can also lose water fast, so working time and mix consistency need watching. A hollow tile may crack under point loads, lift at the edge, or sound dead when walked on. It does not always fail immediately, which is why the check belongs during laying.

How do you verify a tiler's claim without a local register?

Somaliland has no national tile fixing register, so verification comes from records and observation, not a certificate alone. Ask for a method statement: bed material, mix ratio, bed thickness, coverage target, joint width and curing. Ask whether the contractor has test or snag records from a recent tiling job, and if so, walk that site and tap a few tiles yourself. Ask the municipal engineer's office whether it holds any record of the contractor's completed work in the town. Watch one full tile being laid. Does the tiler back-butter, comb the bed, press and tap, and lift the tile to check coverage? General practice is to aim for full contact, but confirm the coverage target with the project's specification or engineer. A confident answer without a demonstration is unverified capability.

How do you catch the gap before the whole floor is tiled?

Catch it on a small trial area. Ask for one or two square metres laid as a sample, let it cure, then tap test every tile and lift one to inspect the bed. Check the substrate is clean, sound and primed as the specification requires. Confirm the tile is not being laid over dust or loose screed. During the main work, watch for tiles being laid on dry, stiff mortar, and for bed thickness dropping as the crew speeds up. Note the day each area is tiled so a later hollow tile can be traced to a batch or a shift. Keep a simple snag list and photograph each stage. Confirm any repair method with the engineer before tiles are lifted, because removing a tile can damage the bed around it.

What to do next

Before tiling starts, write into the order that the contractor must lay a sample area, tap test it after curing, and submit a method statement for bed mix, thickness and coverage. Then visit the site on the first laying day and tap the sample yourself. Record the result in the site file. If the answer is vague, ask two other tiling teams for a written method statement before you commit the floor to one crew.