When self-leveling compound is needed – decision criteria and next steps
Self-leveling compound makes sense on a prepared, stable surface and within the thickness range intended for a specific product. Does not repair moving or damp floors. The card organizes signals, decision criteria, safe actions and when independent judgment is needed.
In brief
The self-leveling compound makes sense on a prepared, stable surface and within the thickness range intended for a specific product. Does not repair moving or damp floors.
First determine the cause and extent, then choose the repair technology. A good fix can't just hide the symptom.
What decision do you need to make
In the topic "When you need a self-leveling compound", the decision concerns the scope of repair, the safety of further work or the choice of the right solution. It should not be based only on the appearance of the surface.
Signals to check
- visible waves, faults or deviations from the plane
- problems with the installation of moldings, doors, furniture or cladding
- uneven gaps and the need to overcompensate with glue or mass
What could be causing
- uneven surface left without measurement
- improperly set guides, incorrect layer thickness or lack of control
- deformation of the screed, development or building elements
Decision criteria
Base your decision on the activity of the problem, the scope, the condition of the substrate and the consequences of covering the defect.
- take measurements with a patch, level or laser in several directions
- note the largest deviations and places of collision
- compare the requirements of the planned finish with the actual one substrate
What to do before making a decision
- suspend the installation of cladding and structures dependent on evenness
- mark places requiring correction
- determine whether the problem is local or concerns the entire surface
How to confirm diagnosis
- Collect documentation and measurements.
- Compare at least two possible sources of the problem.
- Check material and subsequent layer requirements.
- If in doubt, order an independent assessment before disassembly.
Further actions
After confirming the cause, select the solution that removes the problem in the earliest defective layer:
- select the method to the size and type of deviation
- prepare a load-bearing substrate and make a layer of the permissible thickness
- check the surface before bonding and before the next stage
What to avoid
- compensating for large deviations with the plaster alone
- compensating for curvature with an excessive layer of glue
- assessment only by eye without measurement
Common rating errors
- decision without measurement or visual inspection
- considering each defect as purely aesthetic
- too small extent of the outcrop
- no criteria for re-acceptance
Urgency, cost and risk of deepening
When an independent assessment is needed
- deviation affects doors, installations, drains or permanent structures
- flooring is working, cracking or sagging
- major thickness adjustment or structural assessment required
What to check after the decision
- measurements in several directions are within the requirements of the next layer
- no local faults and unstable places
- assembled elements can be positioned without forcing and wedging
Frequently asked questions
How to decide on "When do you need a self-leveling compound"?
Self-leveling compound makes sense on a prepared, stable surface and within the thickness range intended for a specific product. Does not repair moving or damp floors. The most important thing is to base your decision on measurements, extent and the consequences of covering the defect.
Is the surface appearance alone sufficient for evaluation?
No. You need to check activity, extent, substrate, hidden layers, and the consequences of being covered. In case of a dispute, it is worth taking a measurement or an independent assessment.
Is it possible to start with the smallest correction?
Yes, if the test does not hide the defect and allows you to verify the technology. Do not limit the scope when the cause is deeper or the problem is widespread.
What to do after choosing a solution?
Record the scope, technology, materials, responsible and inspection criteria. Start the next stage only after confirming a stable result.