Calculated result
4bags
Bags to mix
Formula
FLOOR-SLU-001bags = ceil(L × W × depth × (1 + waste) ÷ bag yield)
1.25 ft³
Pour volume
1.375 ft³
Volume including waste
120 ft²
Floor area
Flooring calculator
Self-leveling calculator
Self-leveling calculator publishes formula FLOOR-SLU-001 version 1.0.0.
By Feroz Shiekh · Formula FLOOR-SLU-001 v1.0.0 · Internal QA complete · Planning only — not a supplier quote
Formula
FLOOR-SLU-001v1.0.0Project inputs
Enter field measurements. Imperial lengths take feet and inches. Unit conversion happens before the reviewed formula is applied.
All values can be refined when you edit the estimate. This tool does not replace field verification or local requirements.
Self-leveling calculator publishes formula FLOOR-SLU-001 version 1.0.0. Self-leveling floor calculator for bags from area, pour depth and the bag yield printed on the sack. Waste, rounding and the rate you type stay on the sheet so a quote letter can still explain the number. Add the line to an estimate. Planning takeoff only — not a code approval and not a live supplier price.
- Formula FLOOR-SLU-001 version 1.0.0 is the arithmetic on this self-leveling calculator page and on the quote letter.
- Flooring takeoff: Self-leveling bags from floor area, pour depth and the bag yield printed on the sack. Waste and purchase rounding stay visible inputs, not hidden constants.
- Add the self-leveling calculator result to an estimate, then send a quote letter — an old letter still explains itself.
- You type the unit rate. Construclytic does not fetch supplier prices for this flooring tool.
- Planning takeoff only. The self-leveling calculator is not a code approval, mix design, or PE stamp.
Transparent cost view
No dummy crew rates. Totals stay at zero until you type a material or labour rate. Pick a currency — badges, inputs, and totals follow.
Costs use the carton or square-foot rate you type. Construclytic does not fetch store prices. Underlayment, grout, thinset and labour stay companion lines.
How this calculator works
A transparent self-leveling underlayment takeoff.
Feroz ShiekhWritten by Feroz Shiekh · founder
Floor area times pour depth, divided by the bag yield printed on the sack, after waste, rounded up to whole bags.
FLOOR-SLU-001 is a volume pour: area × depth ÷ the bag yield printed on the self-level sack, after waste. Thinset is a trowel-coverage bag on a different page. Mortar yield is the wrong sack.
Worked example. Example: a 12 × 10 ft floor at ⅛ in, 0.40 ft³ bag yield and 10% waste rounds to 4 bags.
- 1. Measure the floor that will receive the pour, not the room including cabinets you will float around.
- 2. Depth is the average. Low spots eat extra — that is the waste field.
- 3. Thinset and grout stay tile companions.
Field notes that change the number
- Measure the floor that will receive the pour, not the room including cabinets you will float around.
- Depth is the average. Low spots eat extra — that is the waste field.
- Use the yield on the self-level sack. A 50 lb planning figure of 0.40 ft³ is a start, not a brand.
Common mistakes
- Using the thinset calculator for a pour.
- Using a mortar bag yield.
- Ordering from net volume and skipping the spare bag.
Need the broader workflow? Read the flooring planning guide.
Questions
Questions about self-leveling underlayment
Is this thinset?
No. Thinset is a trowel-coverage bag. Self-level is a volume pour.
Can I use a mortar bag yield?
Use the yield on the self-level sack. Mortar and SLU are different products.
What is the formula ID?
This self-leveling calculator publishes formula FLOOR-SLU-001, version 1.0.0. The ID stays on the result and on the estimate line.
Is this engineering advice?
No. The self-leveling calculator is a planning takeoff. Construclytic is not a registered engineering or contracting firm. Field checks, codes and product data still sit with you.
Does Construclytic fetch live supplier prices?
No. Costs on the self-leveling calculator use the rate you enter. Construclytic does not fetch live supplier prices.