Understanding Self-Levelling Compound Quantities
Calculating the exact amount of self-levelling compound needed for your project is straightforward once you know the coverage rates. It’s always wise to purchase a few extra bags to account for unforeseen circumstances or slight over-application. Self-levelling compounds are typically available in either 20kg or 25kg bags, which are standard across various brands and formulations.
Types of Self-Levelling Compounds and Their Coverage
Self-levelling compounds can be mixed with either latex additives or water, and their coverage rates vary accordingly. When mixed with latex, the coverage often comes in a 20kg bag, averaging around 3m2 at a 5mm thickness. When mixed with water, the typical packaging is a 25kg bag, with similar coverage under the same thickness conditions. It is important to note that these figures are approximate and can vary based on manufacturer specifications.
Important Note
If you are uncertain about the specific coverage of your chosen self-levelling compound, always consult the manufacturer’s data sheet. A general rule of thumb is that one 20kg-25kg bag usually covers an area of approximately 3m2 at a 5mm thickness.
Coverage for Self-Levelling Compounds Mixed with Latex
- Ultra ProLevel Flexible Two Part Leveller – 20kg bag – covers about 2.4m2 at 5mm thickness
- Mapei Latexplan No Ammonia – 20kg bag – covers approximately 3m2 at 5mm thickness
- Arditex NA – 20kg bag – covers roughly 3m2 at 5mm thickness
Coverage for Self-Levelling Compounds Mixed with Water
- Sikafloor 125 Level Latex – Coverage varies; check manufacturer data
- BAL Level Max – 25kg bag – covers about 3m2 at 5mm thickness
- Mapei Ultraplan Renovation Screed 3240 – 25kg bag – covers approximately 3.5m2 at 5mm
- Setcrete Latex Floor Levelling Compound – 20kg bag – covers around 2.3m2 at 5mm
Calculating Floor Area
Before estimating the amount of self-levelling compound needed, accurately measure your room’s dimensions. Measure the length and width of the space in meters (m), then multiply these two to determine the total area:
Floor Area (m2) = Length (m) x Width (m)
For example, if your room measures 4 meters by 4 meters, then:
4m x 4m = 16m2
Self-Levelling Compound Calculation Method
Let’s consider Arditex NA as an example. It comes packaged in a standard 20kg bag, which covers about 3m2 at a 5mm thickness. To determine the number of bags required, simply divide the total floor area by the coverage per bag:
Bags Needed = Floor Area (m2) / Coverage per Bag (m2)
For a room measuring 24m2, the calculation would be:
24m2 / 3m2 = 8 bags
It’s prudent to purchase a few extra bags—say, 10 in total—to account for any over-application or thickness variations. Always remember that increasing the thickness reduces the coverage proportionally. If you plan to pour the compound at 10mm instead of 5mm, you will need approximately twice the number of bags.
Additional Tips for Accurate Calculation
- Measure your room precisely to avoid underestimation.
- Purchase extra bags—about 10% more than your calculated requirement—to prevent running out mid-project.
- Adjust calculations if you intend to pour at a different thickness; thicker layers require more material.
- Remember, actual consumption may vary slightly due to surface conditions and mixing consistency.
By following these guidelines, you can ensure you buy the right amount of self-levelling compound, avoiding waste and ensuring a smooth, level floor finish.