How we decide latex is needed
We use a straightedge and spirit level across the room to find dips, ridges and slopes, then compare that against the tolerance the chosen floor finish needs. Rigid finishes like large-format LVT and click products are far less forgiving of unevenness than carpet, so the same floor might pass for one finish and fail for another.
What goes wrong on an unlevelled floor
- Rigid click floors rock or 'tent' at joints over dips and high spots.
- Adhesive coverage becomes patchy over an uneven surface, weakening the bond.
- Underlay compresses unevenly, leading to premature wear patterns.
- Skirting and door bars sit awkwardly where floor height varies across a room.
Preparation before latex goes down
- Removing old adhesive, paint or contamination the compound won't bond to.
- Priming the surface to control absorption and improve adhesion.
- Checking moisture levels in the base floor, since latex won't fix a wet slab.
Finishes it enables
Levelling compound is generally used as a step before glue-down LVT, rigid-core SPC, engineered wood and tile-look products where flatness genuinely matters. Carpet is more forgiving and often doesn't need it unless the floor is badly out.
Fife reality: mixed-age extensions and older cottage floors
We see plenty of Fife homes where an extension floor meets an original room at a slightly different level, or where old quarry tiles and patch repairs have left an uneven surface underneath. Latex is often the practical fix that avoids more disruptive structural work, provided the underlying floor is sound and dry first.