Poly Waterproofing is an independent guide to polymer and spray-applied waterproofing: what each system is, where it works, where it does not, and how to tell a good installation from a bad one. We write for the people who have to live with the decision, whether that is a building owner, a facility manager, a specifier, a contractor or a homeowner with a wet basement.

What we cover

Our guides compare polyurea honestly against EPDM, TPO, PVC, modified bitumen, silicone and acrylic systems, and they go where water actually gets in:

• Roof Waterproofing: flat and metal roofs, ponding water, restoration coatings and replacement decisions.
• Below-Grade Waterproofing: foundations, basements, drainage and positive vs negative side systems.
• Decks and Structures: balconies, plazas, parking decks, stadiums and bridges.
• Ponds and Water Features: pond and koi pond linings, fish-safe chemistry and potable-water certification.
• Testing and Detailing: moisture testing, flood testing, leak detection and the details where leaks start.

We also offer free planning tools, including a material quantity calculator and a roof lifetime cost comparison, on our tools page.

Editorial standards

Our editors research every guide against primary sources: ASTM and ANSI standards, model building codes, government agencies, recognized trade associations and manufacturers' published technical data. Where we state a number, we either cite where it comes from or present it as a typical range and explain what drives it. Prices are always labeled as estimates, because they vary by region, project size and year.

We do not invent statistics, testimonials, case studies or credentials. When a question depends on a specific product, we tell you to check that product's current data sheet and installation instructions, because those documents, not a general guide, govern warranties and acceptance limits.

Guides are reviewed periodically and updated when standards, codes or common practice change. If you spot an error, tell us through the contact page. We correct factual mistakes promptly and note significant corrections in the updated article.

Who is behind the site

Poly Waterproofing is part of a network of building-products sites operated by Global Trading Partners LLC, which is associated with ArmorThane, a manufacturer of polyurea coatings. We disclose that relationship so you can weigh our coverage accordingly. Our comparisons are written to help readers choose the right system for the job, which often is not polyurea, and we link to a manufacturer only where it genuinely helps the reader.

Sponsored content and advertising

We accept advertising and sponsored articles from relevant businesses. Sponsored posts are clearly labeled as sponsored at the top of the article, paid links carry rel="sponsored", and sponsors do not get editorial control over our independent guides. Advertising never changes a recommendation. Details are on our advertise page.

Questions, corrections or project stories you would like us to cover? Reach the editorial team through our contact page, or pitch an article on the write for us page.