Your cart is empty.

DRYLOK Coverage Area Calculator

How much DRYLOK® do I need?

1. Enter the dimensions of the surface to be coated, rounded up to the nearest foot. If you’re coating more than one surface, like a multi-level deck, run this calculation for each separate area and add the results together.

2. Enter the number of windows and doors (if none, enter 0). The formula is based on a window measurement of 3’x5’ and a door size of 3’x7’.

3. Select a product.

4. Click the CALCULATE button.

Total Square Feet:
First Coat:
Second Coat:
Third Coat:

To achieve a deeper color and bring out a soft sheen, apply a second coat.

All products listed here are available in gallons, some also come in 5 gallon containers, and others are packaged in pints (8 pints = 1 gallon) and/or quarts (4 quarts = 1 gallon). The number of coats recommended is intended to provide the best possible coverage and meet warranty qualifications, if applicable. This calculator was designed to generate an approximation of the amount of product required and should only be used for estimating purposes. The amount may change depending on the application, the condition of the surface, and other variables. If you have questions about our products or would like to discuss your project, please call our Customer Service Team at 1-800-272-3235 (Monday-Friday, 8am-5pm Eastern) or email

Also, don’t forget to share your success stories on social media and tag us with #DRYLOKWATERPROOFER. We’d love to see your handiwork!