Floor patches get expensive, so this uses the coverage printed on your specific bag.
How it works
Area × your average depth ÷ the depth the bag is rated for, then divided by the bag coverage. Adds 10% for low spots.
Before you order
- Average depth is hard to guess. Lay a straightedge across the floor at several spots and measure gaps.
- Prime the substrate when the manufacturer calls for it, or the layer may pinhole or lose bond.
- Work with a helper once mixed, since working time is short.
Common questions
How much does a bag of self-leveling cover?
A 50 lb bag commonly covers about 40 to 50 square feet at 1/8 inch, depending on the product.
Can I pour it thick?
Each product has a maximum depth. Thicker pours may need a sand extension or a deep-pour product.