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Self-leveling underlayment coverage by brand and product

Coverage per bag and allowed pour thickness for each self-leveling underlayment we have checked, taken from the manufacturer's technical data sheet. Open a product to calculate bags for your own floor.

Coverage per bag at the data sheet's reference thickness. Last column: bags to buy for 100 sq ft plus 10% waste at 0.25 in (or the product's default thickness if 0.25 in is outside its range).
ProductBagCoverage per bagThickness rangeBags for 100 sq ft
ARDEX K 15
ARDEX		55 lb (25 kg)30 sq ft at 0.25 in (2.8 m²)0.25–1.5 in4 (at 0.25 in)
Custom LevelQuik RS
Custom Building Products		50 lb (22.68 kg)23 sq ft at 0.25 in (2.1 m²)0.125–1.5 in5 (at 0.25 in)

2 products. Real coverage depends on the tile, the substrate and your technique; each product page explains how its numbers are worked out.

Calculators

Sources