Kelmore LevelMore Pro vs F. Ball STOPGAP 1200: Which Levelling Compound Should You Choose?
Posted by Yasmin Ilarionos on 28th Jul 2026
Kelmore LevelMore Pro vs F. Ball STOPGAP 1200: Which Levelling Compound Should You Choose?
Choosing the right levelling compound is an important step in creating a smooth, stable subfloor ready for new floor coverings. Whether you're preparing a domestic renovation or a commercial project, selecting the right product can help improve installation efficiency and achieve a high-quality finish.
Two popular options are Kelmore LevelMore Pro and F. Ball STOPGAP 1200. Both are two-part, moisture-tolerant levelling compounds designed for internal subfloor preparation, but they offer slightly different features depending on the needs of your project.
At a Glance
|
Feature |
Kelmore LevelMore Pro |
F. Ball STOPGAP 1200 |
|
Product Type |
Two-part levelling & smoothing compound |
Two-part smoothing compound |
|
Application Thickness |
2–20mm |
2–10mm (up to 30mm filled) |
|
Walk-On Time |
Approx. 90 minutes |
From 60 minutes |
|
Ready for Resilient Flooring |
From 3 hours |
From 4 hours |
|
Suitable Over Adhesive Residues |
✔ |
✔ |
|
Primer Required on Many Substrates |
✔ |
✔ |
|
Suitable Below Surface DPMs |
✔ |
✔ |
|
Protein Free |
✔ |
✔ |
Always refer to the latest manufacturer technical data sheets before installation.
Why Choose Kelmore LevelMore Pro?
Kelmore LevelMore Pro has been developed to provide a fast, reliable solution for smoothing and levelling internal subfloors prior to installing resilient floor coverings. Suitable for a wide range of substrates, it combines rapid drying times with excellent flow characteristics, helping installers achieve a smooth finish with minimal effort.
One of its key advantages is that resilient floor coverings can be installed from 3 hours, helping to keep projects moving where time is critical. It can also be applied from 2mm to 20mm in a single application, making it suitable for both minor corrections and larger areas requiring additional build-up.
LevelMore Pro is also supplied with Kelmore's innovative liquid pouch packaging, which uses less plastic than traditional rigid bottles, helping to reduce packaging waste without compromising performance.
Combined with its moisture tolerance, suitability over many existing adhesive residues and compatibility beneath surface damp proof membranes, LevelMore Pro offers a practical solution for a wide variety of flooring projects.
How Does STOPGAP 1200 Compare?
- Ball STOPGAP 1200 is another well-established two-part levelling compound used across the flooring industry. Like LevelMore Pro, it is moisture tolerant, suitable over many existing adhesive residues and designed for preparing internal subfloors before installing floor coverings.
The main differences lie in application depth and installation times. While STOPGAP 1200 is applied between 2mm and 10mm as standard, it can be extended to 30mm by adding aggregate. Kelmore LevelMore Pro, however, can be applied up to 20mm without the need for aggregate, making it a convenient option for many projects requiring deeper applications.
Although STOPGAP 1200 reaches walk-on hardness sooner, LevelMore Pro allows resilient floor coverings to be installed approximately one hour earlier, helping installers complete projects more efficiently.
Which Product Should You Choose?
Both products are high-quality levelling compounds suitable for professional flooring installations. However, if you're looking for a product that offers rapid floor covering installation, greater application depth without added aggregate and environmentally conscious packaging, Kelmore LevelMore Pro is an excellent choice.
At Floormart, we stock the full Kelmore subfloor preparation range, including LevelMore Pro, LevelMore Contract, LevelMore Absolute 30 and Kelmore Feather, providing professional solutions for every stage of floor preparation. Explore the Kelmore range today or contact our team for advice on choosing the right product for your next installation.