The Goal

We started with the goal of creating a cleaner that actually worked for cleaning composites, especially as it relates to common black mold stains. We had previously used common brand name deck cleaners, other cleaners, chlorine bleach and home remedies we found on the internet or that were recommended by composite manufacturers (thank god we did not poison ourselves) with little if any success in an attempt to clean common black mold staining. They did not get the composites clean. We found that most cleaners only made mold staining and other common staining issues worse, especially when repeatedly used, as the mold generally rapidly returned & other stains deeply saturated, exacerbating the problem! After some basic research, we quickly discovered the primary problem was the recommendation & use of sodium hypochlorite, against common mold remediation science & multiple other cleaning chemicals which generally broke down stains, but did not remove them, allowing them to deeply saturate, making them generally more difficult to clean. We were horrified of the dangers of accidently mixing non-compatible cleaning chemicals, in the pours of most composites, after becoming sick cleaning one composite manufacturers composite decking, by following their cleaning chemical recommendations & noticing the corrosion these corrosive cleaning chemicals caused to structural metal decking hardware!

There Had To Be A Better Solution…

We then spent the next few years traveling around the United States, cleaning composite decks with different formulations, that were developed by several reputable chemical engineers, with over 40 years of designing & manufacturing cleaning chemicals (one who actually owns a TREX® deck) that biologically/chemically/scientifically understood the many problems sodium hypochlorite, oxalic acid & phosphate based products cause, in an attempt to resolve claims related to cleaning issues for a major composite manufacturer, when their customers & employees could not get & keep composites clean, especially after repeatedly using sodium hypochlorite to clean common black mold.

The Birth of Corte-Clean®…

Eventually, we developed a proprietary, more eco-responsible & non-corrosive to structural metal cleaner that resolved most common composite staining issues, especially those caused by black mold! When composite owners started telling us how much longer their composites were staying clean, of all common stains, contacting us & asking “where can we purchase your cleaner”, especially after trying multiple other products, we formed Corte LLC, named our cleaner Corte-Clean®, after the town of Corte Madera, California & began selling it. We would like to thank all the people & companies, especially Ronald Kaplan, Bart Kelley & Kyle Lancaster at the Trex® Company, Joe & Doug Brooks/Jim Precht/Flo Sanchez at AERT/ChoiceDek®, Bill Ross/Rick Lappin/Tammy Sanders at Fiber Composites LLC/Fiberon®/Veranda®, Chip Herr at TimberTech®, Correct Deck®, Boise®  and so many others that have supported & encouraged our efforts, which helped us to prove our product for cleaning & routinely keeping composites clean, of all common staining issues. What we didn’t count on was Corte-Clean® working too well, cutting into companies profits by eliminating rapidly returning cleaning issues & the routine sale of multiple high margin cleaning chemicals. Thankfully the internet blossomed, allowing us to sell direct online to end users & through honest retailers, that wish to help composite owners, not profit as much as possible.


Our mission is to continue spreading the word about Corte*Clean® to composite owners & helping customers solve their cleaning issues.

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