Basement Waterproofing Liner & Sealant Calculator

Estimate masonry waterproofing paint and vapor barrier rolls for basement walls.

Interactive Material & Cost Estimator

Coverage Rate Mode • Gallons / Rolls

1. Select Project Area Shape

Length (Feet)

Width (Feet)

Waste / Cut / Compaction Buffer

2. Select Package / Unit Size

Price / Unit ($)

Contractor / Bulk ($)

Delivery ($)

Estimated Material Needed 1,200 sq ft (+10% buffer)

Net + Buffer Area 1,320 sq ft 1,200 base sq ft

Coverage Per Package 500 sq ft per unit (5-gal pails)

Total Units / Packages to Buy 3 5-gal pails

Waste Buffer Included +10% included

Estimated Project Material Cost 3 5-gal pails

Retail Package Total $447.00 Before local sales tax

With Delivery / Bulk $447.00 Direct store pickup

Instant pre-calculated material estimates for common US residential project sizes before compaction buffer:

Typical US Project	Area	Depth	Volume	Weight	Store Bags
Standard Basement (140 ft perimeter × 8 ft walls)	1,120 sq ft wall	2 Coats	22 Gallons (Four 5-gal pails)	250 lbs	4 pails masonry paint + 3 buckets cement

Paint Gallons = (Basement Perimeter × Wall Height × 2 Coats) ÷ 100 sq ft per gallon

Calculates heavy-duty elastomeric masonry waterproofing paint and hydraulic cement patch required for leaky foundation walls.

Masonry waterproofing paint applied to the interior basement wall is negative-side waterproofing, resisting water pressure trying to push inward.

Yes, specialized masonry paints bond to damp concrete, but active flowing water must be plugged first with hydraulic cement.