Questions and Answers for DRYLOK 12 oz. Concrete and Masonry Etch and Cleaner

A:  gvani2 - Thank you for your question. First check if the efflorescence has caused the waterproofer to fail, It most likely has. I prefer to remove most of the efflorescence with a steel brush and scraper before using the DRYLOK® Etch solution. After scraping and steel brushing the affected areas, mix the DRYLOK® Etch per label instructions for etching and apply as directed. Do not allow the solution to dry, and do several freshwater rinses, then allow the surface to dry for a few days before applying two coats of DRYLOK® Waterproofer to the areas.

A:  BGoode - It's not required, a simple garden hose rinse will work but a pressure washer will do a better job. The key is to rinse with large amounts of water to remove any residue.

A:  JimL - Yes, see the instructions section for cleaning. (One bottle per gallon of water ratio)

A:  Michael - The cleaning footage can vary widely based on mixing strength, surface porosity, and application rate. According to the Product Data Sheet, COVERAGE (SQ. FT./US GAL.):300 sq. ft./12 oz. when mixed with 1 gallon of water (12 oz to 1-gal of water is the "cleaning" mix, mixing to the "etch" mix would be roughly 150 sq. ft. You can review the PDS at this link: https://images.thdstatic.com/catalog/pdfImages/b6/b67d27d3-8113-4f16-9f6e-7b7e66148e90.pdf

A:  Syntec2 - Please rinse the surface with clean water multiple times making sure acid does not recrystallize on the surface. You can review the product data sheet at this link: https://images.thdstatic.com/catalog/pdfImages/b6/b67d27d3-8113-4f16-9f6e-7b7e66148e90.pdf

A:  Zane - Etching products will not work on sealed or painted surfaces, you will need to remove the coatings so the acid can reach the substrate.

A:  Nadi - That is not a application we suggest this product for. Please consult with a Home Depot associate for the proper product.

A:  DSmith - Thank you for your question. Yes, DRYLOK® Etch can be used on rough or smooth masonry surfaces to aid in removing effloresence or cleaning. Please refer to label and/or product data sheet for mixing instructions based on your specific application. If you have any questions, we're here to help at www.askugl.com or 1-800-845-5227.