Corte Clean Composite Deck Cleaner Reviews

Name: Corte Clean Composite Deck Cleaner
Rating: 4.84

4.8 Rating 707 Reviews

98 %

of reviewers recommend Corte Clean Composite Deck Cleaner

4.8

Based on 707 reviews

Shipping & Delivery
Delivery Methods	Courier, Postal Service
Average Delivery Time	Within 5 Days
On-time Delivery	100%
Accurate And Undamaged Orders	100%
Customer Service
Communication Channels	Email, Telephone, Live Chat
Queries Resolved In	Under An Hour

About Corte Clean Composite Deck Cleaner:

DISCATISFIED CORTE-CLEAN® CUSTOMERS (anything less than a 5 Star Review)!

PLEASE READ BEFORE POSTING A NEGATIVE REVIEW!!!

Please immediately contact Corte LLC if you are not satisfied with our proven product, which has existed for over a decade, with so many positive reviews & re-peat customers. We are a small, 1 product, family run, American made business. We will do our best to help you, as we are EXPERTS in composites & keeping them clean.

We wish to help! (415) 924-9500 X 1
Please leave a message if we fail to answer the phone.
We will call you back ASAP!

We want to make sure you not only get your composites THOROUGHLY CLEAN, we want to make sure you understand how to generally SPEND LESS TIME & MONEY, in the future, keeping composites clean. Corte-Clean® is proven to do this when used "at least twice yearly, spring & fall, or when stains appear" at the "routine cleaning" reduced "up to" 1/2 strength. If mold stains are returning, you are waiting too long to proactively Corte-Clean®, and likely wasting more time, labor and money than necessary! See how little Corte-Clean® can be proactively used to save. THis has the added benefit of being more ECO Responsible!

Corte-Clean® is the most recommended solution for deep cleaning Composite Deck, Dock & Fence of all common stains, NOT JUST those caused by MOLDS. Say goodbye to mold & mildew stains, black spots, grease, oil, rust and more with out the need to expensively purchase and laboriously use multiple non-compatible poisonous and/or corrosive to structural metal cleaning chemicals, especially those that contain oxalic acid or sodium hypochlorite, the active biocide in chlorine bleach which OSHA DOES NOT RECOMMEND FOR MOLD & science by Oregon State University has proven to be ineffective from the wood of which most composites are partially made. Don't be another sucker for "The Chlorine Bleach SCAM"!!!

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Phone:

(415) 924-9502

Email:

info@compositedeckcleaner.com

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Corte Clean Composite Deck Cleaner 5 star review on 5th June 2023

Jerry L

Anonymous

Anonymous // 01/01/2019

Sort by: Most Recent Most Recent Highest Rated Filter: None None 5 Stars 4 Stars 3 Stars 2 Stars 1 Stars Helpful

“I found out about Corte Clean from my father-in-law, who use to own a house with a composite deck. We use to order it together. I have a 12 X 14 second story Timbertech deck with stairs down to the ground level in New Jersey. It has lots of trees around it and gets mold. I take the pressure washer to it to remove them, then use Corte Clean. I do this twice yearly, in the spring and fall. I have been using Corte Clean for 10 years. The deck still looks brand new, excluding where it wasn't properly installed with proper drainage gaps.”

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Posted 4 years ago

Thanks for the order & testimonial. Please contact us next time you need Corte Clean so we can give you a discount.

Posted 4 years ago

“We get black mold spots on our composite deck. I have two types of composite decking, as we extended the deck. It's about 400 square feet total in Iowa. This is my 4th time purchasing Corte Clean. I tried some old Corte Clean and it didn't work. I noticed the date was expired from 2018. Fresh Corte Clean works pretty darn good! I just bought two more today.”

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Posted 4 years ago

Thanks for your order & testimonial today. We discounted your order by $10 to show our appreciation.

Posted 4 years ago

“We have been using Corte Clean to clean our composite deck for 10 years, mostly for mold. My son in Cincinnati uses it too. We are happy with the results.”

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Posted 4 years ago

Thank you for your order & testimonial today. We have rewarded you with FREE SHIPPING to show our appreciation.

Posted 4 years ago

“My husband and I installed a TimberTech composite deck to replace the old rotted out wood deck on our condo in Ohio. We didn't want to have to sand, paint and seal anymore. We were looking for less maintenance. To our surprise, mold showed up, so we bought a pressure washer to clean it. Using it was a lot of effort and didn't get the deck clean! Additionally, we were worried about permanently damaging the expensive decking, as so many of our neighbors have done. Most are now black with mold. Their decks look awful and they cover them with rugs. I called TimberTech and they recommended Corte Clean. I am very happy with the product. We have now been using it for 3 or 4 years. It works so well, I sold the power washer because I no longer need it. I am very happy with the product and the way it cleans.”

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Posted 4 years ago

Thanks for the testimonial & order today! We have given you free shipping to show our appreciation. Please tell your HOA of Corte Clean.

Posted 4 years ago

“I've had a TimberTech deck for 12 to 15 years. I bought it at Heartville Hardware here in southern Ohio. It gets black and green mold because its on the shady side of the house. The first time I used Corte Clean, I was sold. The deck looked like new. It also works great on my concrete driveway.”

Helpful Report

Posted 4 years ago

Thanks for the testimonial, especially with the concrete, & your order today. We applied FREE SHIPPING to your order to show our appreciation.

Posted 4 years ago

“I used Corte Clean for the last 10 years. The absolute best composite cleaner on the market. Last year i didn't plan ahead and the local stores were out, so i tried another product. Big mistake. I ended up online and ordering the REAL DEAL Corte Clean. I clean the deck twice a year because it looks so awesome and makes it look new again. Thanks Again for such a great product.”

Helpful Report

Posted 4 years ago

We apologize for your local store being sold out, as we can't force retailers to make sure Corte Clean is in stock. Hopefully you let them know of your results with the other product vs Corte Clean. We thank you for buying direct online. Unfortunately, you had to clean your composites twice; wasting your time & money. Since you already bought it, contact us next time you need it and we will give you a discount. Thanks for the testimonial & your business!

Posted 4 years ago

“We have an expensive large Fiberon Horizon PVC coated deck we installed approximately a decade ago here in Kentucky. It's actually 3 decks, on 3 levels, with stairs handrails, balusters, etc., around 400 square feet total. It is the textured decking that looks like wood with deep grooves that traps dirt and derbies. It gets real dirty and difficult to clean. I tried another product, but it excessively bleached and permanently damaged the deck! I can still see where I used it today, which makes me mad. I called the manufacturer, Fiberon, and they recommended Corte Clean. It is awesome! It is easy to use. You can see it work. We have been using it ever year since we found out about it. I use to buy it locally but now buy it directly form the website. I don't mind this, as it is fresher & works better. As long as we own this deck, and live in this house, we will be using Corte Clean to keep our deck clean. God bless you.”

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Posted 4 years ago

Thanks for the Testimonial! You WIN FREE Corte Clean. It ships tomorrow.

Posted 4 years ago

“We have used corte clean for years and have always been pleased with it! And we always clean our deck twice a year because our rear of the house faces north and cedar trees around it. Glad to see we can still order on line.. sincerely Bill”

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Posted 4 years ago

Thanks for the testimonial! We are happy to be open & shipping during the Coronavirus outbreak. While people are being smart & staying home, most seem to be doing household chores. It's the perfect time to clean & enjoy your composite deck.

Posted 4 years ago

“I have a 2,500 square foot TimberTech composite deck in Toronto Canada. I installed it in 2015 or 2016? No one told me it got moldy when I bought it, especially on the north side of the boat house! I tried the sodium hypochlorite chlorine bleach based products. Don't waste your time! After doing a lot of research on the internet, I finally found Corte Clean. It was the only website that explained the problem as it relates to the wood fiber tannin's and molds. This was the deciding factor in going with Corte Clean. Unfortunately, there wasn't a retailer near me, so I drove approximately 2 hours, each way, to the 84 Lumber in Buffalo, NY. They only had 2 bags of Corte Clean or I would have bought more!!! I took them home & used them. The label directions are crystal clear. This is the only product that works. I know a lot of people with composite decks and will be recommending this product. I just ordered 8 more to complete the job this spring. Thanks Corte Clean!”

Helpful Report

Posted 4 years ago

Thank you for the testimonial & order today! For your effort in purchasing our product & review, we reduced your order cost today by $97.46 and included a FREE bag of Corte Clean. Hopefully this pays for the fuel you used on the drive to get our product & the extra Corte Clean can be used this fall to keep your TimberTech clean.

Posted 4 years ago

“The composite deck had been in place for 10+ years and never cleaned. It was it pretty bad shape!! We used the Corte Clean on a cloudy day so we could allow it to soak for the recommended time without drying out. The deck isn't perfect, but the difference is AMAZING. Very little scrubbing, very little effort and the deck looks so much better. We truly were not sure what to expect as this deck was in bad shape. Still a little more work to do, but I believe with another cleaning this Spring, it will look GREAT. Very pleased with the results. FTM: Dover Delaware”

Helpful Report

Posted 4 years ago

Thanks for the testimonial! Their is good reason the Corte Clean label directions state "Works best in direct sunlight between 65 to 85 F.", especially to clean a neglected 10+ year old composite deck in pretty bad shape! The key to success isn't the time Corte Clean is allowed to work, but using it in the correct conditions & carefully following its label directions. Your deck would have likely turned out perfect, if this critical label direction was followed, especially if you didn't skip the final label direction which states “When Corte-Clean® no longer turns dirty or discolored, it can be diluted & allowed to dry on weathered composite surfaces. Corte-Clean® is designed to continue to clean any time it receives moisture. A white residue may remain until thoroughly rinsed (use a brush if necessary). Thoroughly rinse composite prior to using.)” The best way to thoroughly rinse is to apply before it rains and let the natural moisture complete the job. If it doesn't, re-apply. Perhaps this is all the remaining "work" you need to do? Once thoroughly Corte Cleaned and exposed to the sun for weathering issues even out, which generally takes 6 to 8 weeks, your composite deck should look "perfect." Don't forget to proactively Corte Clean your composites, at the reduced "routine cleaning" strength, "at least twice yearly, spring & fall, or when stains appear" if you wish to generally spend less time, labor & money keeping your composites clean. Please let us know if you have any further questions.

Posted 4 years ago

“Corte clean did a fantastic job cleaning my deck. Although I still had a few residual stains after cleaning, they were much lighter than they had been and overall the results were better than I had ever achieved in the past 15 years of owning the deck. My primary concern was black mildew stains that were almost completely eliminated. The mildew staining under my grill mat was so improved that I got rid of the mat. Grease stains were reduced but required other cleaners to get to my satisfaction. I wouldn't give Corte clean five stars for its cleaning ability and the great customer support I received. The reason I gave the product for stars was because there are a couple matters you need to keep in mind when using Corte clean. Corte clean insists that you follow the instructions carefully. This means af fair bit of prep work and also that you apply the product during the appropriate weather conditions. In my area, which is Maryland, having the necessary warm weather without rain, so it can be a challenge. so it's a waiting igame to be able to clean the deck. Also, application of the product is not as simple as spray and wash it off. It requires care where you put it down, protecting plants around the deck, and scrubbing the deck well while it's still wet. It will take time but the results will be worth it.”

Helpful Report

Posted 5 years ago

Thanks for the review! Once thoroughly Corte Cleaned, you likely have weathering issues caused by stains blocking the sun from evenly bleaching or fading your composite decking. Only the sun can weather these issues out, as Corte Clean isn't designed to bleach/fade beyond what occurs naturally by exposure to the sun, like other products. Color variations caused by items & stains blocking the sun is extremely common on a 15 year old composite deck where Corte Clean hasn't been used before. If the "black" mold "stains" (mildew looks silky white till it drys out and looks powdery white, therefore this likely isn't the problem staining your composites) & grease/oil stains weren't completely eliminated, you didn't completely Corte Clean your composite deck and must "repeat" the Corte Clean application process as stated on its label directions. Corte Clean is a cleaning chemical product and you MUST follow its label directions, or it will likely fail, especially when cleaning a 15 year old composite deck where other products have been previously used that can exacerbate cleaning problems, especially if they contain sodium hypochlorite. If your deck is a 15 year old mess, the "prep work" is incredibly important! You should be able to get it 85% to 95% clean with a brush & water alone, then let it "thoroughly dry", for several days to a week or more so the black mold stains can "thoroughly dry" (so they no longer look like a black oil drip). It is extremely important to have the "necessary warm weather" of 65F to 85F to allow composites to expand, the pours to open, grease & oil to solidify, so Corte Clean can clean those stains that are deep set or below the surface while cleaning the wood & recycled plastic from which most composites are made that can feed fungi. Corte Clean definitely "works best in direct sunlight" , especially to initially clean a "15 year" old composite deck that likely has exacerbated mold & grease/oil/etc. stains, which were likely exacerbated from the previous use of other products. One must "protect areas & items not intended to be cleaned." It is always a good idea to additionally protect any plants, shrubs and "Water plants before & after use." It sounds like you skipped the Corte Clean label direction where it states "Water magnifies stains. If stains are still visible, repeat application process. Composites that have tough stains, been neglected or previously cleaned other products and/or sealed may require several applications & additional Corte Clean" by using other products. Hopefully you did not skip the final Corte Clean label direction which states "When Corte Clean no longer becomes dirty or discolored, it can be diluted & allowed to dry on weathered composite surfaces. Corte Clean is designed to continue to clean any time it receives moisture. A white residue may remain until thoroughly rinsed (use a brush if necessary). Thoroughly rinse composite prior to using." The best way to thoroughly rinse is to allow the natural moisture from rain or snow to do the job. Had you done this, you'd have likely noticed any stubborn stains going away as your composites received moisture & the Corte Clean is allowed to continue to work. Moving forward, we'd suggest using Corte Clean at the reduced "routine cleaning" strength "at least twice yearly, spring & fall, or when stains appear, should you wish to generally spend less time labor & money keeping your composite deck thoroughly clean while preventing new stains. Initially, for the next year or two, we would suggest using Corte Clean more proactively to make sure your composites are thoroughly clean. Example" Winter, Spring, Summer & Fall. Get in-front of cleaning issues! Proactively using Corte Clean is the key. Had Corte Clean been proactively used, as it was designed & intended, for the past 15 years, you likely wouldn't have had these problems. Please call if you wish to thoroughly discuss.

Posted 5 years ago

“I live in Tampa Florida and have an EverGrain composite deck, which was installed years ago. I, like everyone else, get black mold stains. I have tried all the cheap products sold at Home Depot and Lowe's. Most just excessively bleach the color of the deck and don't get rid of the mold or last. I then tried Spray & Forget with no results. I called the company and they told me it would take up to 6 months to work. I told them I didn't want to wait till after Christmas for my deck to be clean or buy the company. I then tried Once and Done, which only lasted for a minute. Needless to say, I had previously used Corte Clean and you get what you pay for. I just ordered more and won't be again wasting my time or money with anything else.”

Helpful Report

Posted 5 years ago

Thank you for the testimonial & order. We have discounted your order by $4 and given you free shipping saving you another $6, for a grand total of $10 for taking the time. We love repeat customers that write reviews, especially after trying other products in-between. Chlorine bleach or other sodium hypochlorite based biocides are scientifically proven to exacerbate mold problems while excessively bleaching/fading/weathering composites beyond what composite manufacturers disclose, especially when used in direct sunlight when most clean their composites. Additionally, most notice black or red rust stains caused by corrosion to structural metal decking hardware which require another expensive laborious non-compatible cleaning chemical to clean, which can release toxic poisonous gas when cleaning porous composites; one after the other. This has been the #1 biggest complaint in the composite decking industry for those manufacturers that recommend sodium hypochlorite against OSHA recommendations for cleaning mold. Unfortunately, corrosion is irreversible and it is our understanding that the use of corrosive cleaning chemicals can void structural metal decking hardware manufacturer warranties of screws, nails & joist hangers while making decks unsafe, especially when under load from people. This is currently the #1 safety issue facing those owners, manufacturers & retailers that continue to ignore. This is literally likely the ticking time bomb in the composite decking industry. The other products you mention, most don't want to wait or experience the same results. Owners generally end up having to buy other products to clean grease & oil and/or rust & tannin stains most commonly from the BBQ or leaves & pine needles. Unfortunately, these chemicals too aren't generally compatible. We have been bringing awareness to these issues with owners, retailers, distributors & manufacturers since the mid 2000's.

Posted 5 years ago

“Tried a couple other products that were just bleach. I was surprised after using Corte Clean the first time that it brought the color back.”

Helpful Report

Posted 5 years ago

Thanks for pointing out that Corte Clean can help restore the color to composites where chlorine "bleach" or other sodium hypochlorite biocide based "products" have been previously used & taking the time to write this testimonial. The use of sodium hypochlorite to clean molds, against OSHA recommendations, because it is scientifically proven to exacerbate the problem, not only generally excessively bleaches/fades/weathers composites beyond what is generally disclosed by manufacturers, it can dangerously corrode structural metal decking hardware such as screws, nails & joist hangers. This is the #1 safety problem in the composite decking industry which no person, employee or company should continue to ignore.

Posted 5 years ago

“We have a large Trex composite deck and, over the years, tried pretty much every cleaning product out there, with less than satisfactory results. We tried Corte Clean this year and found it to be the only product which could "get the job done" with regard to removing both black and green mold and other stains. Our deck has gone from unsightly to looking "like new", simply by following the Corte Clean directions and applying the product at the recommended intervals. Corte Clean is a product which does exactly what the manufacturer states it will do. We'll never even consider using anything else.”

Helpful Report

Posted 5 years ago

Thanks for the Corte Clean TREX testimonial! We hear this from so many Trex owners that have wasted so much time, labor & money, especially those products recommended by the Trex Company with all the known problems. Perhaps the Trex Company will listen to an owner like you? Please call next time you need some Corte Clean, as we would like to offer you a discount for taking the time to write this.

Posted 5 years ago

“I have a Trex composite deck in Ohio on the back pouch that is 5 X 10 with steps that has been installed for 5 years and been using Corte Clean spring and fall to keep it clean. It has worked very well. I buy it at 84 Lumber.”

Helpful Report

Posted 5 years ago

Thank you for the testimonial & purchasing Corte Clean at 84 Lumber! Unfortunately we can't "verify" purchases made at any of our retailer partners, other than our website. Thank you for pointing out that proactively using Corte Clean "spring and fall keeps it clean". This is the key to keeping composites clean, especially those caused by mold in a moist environment such as Ohio. The more proactively composites are generally initially Corte Cleaned, the longer they generally stay clean.

Posted 5 years ago

“I have a Nexwood composite deck with white vinyl railing that was made in Canada. I installed it in 2004. The manufacturer no longer exists. It is approximately 18' X 25' raised above the ground with two platforms and lots of steps. My deck was a mess! I barbecue on it year round, including the winter. It had grease, oil, rust, mold... You name it, it was stained. I was about to replace the deck, as it was that bad. I thought nothing would get it clean. I bought Corte Clean last year and couldn't believe how well it worked. It did take some time to clean, however that was to be expected, as I worked small sections. Honest to god, it now looks brand new. I just bought more about a month ago to keep it clean this fall and/or again in the spring.”

Helpful Report

Posted 5 years ago

Thanks for the testimonial & pointing out Corte Clean not only cleans mold stains, but grease, oil, rust, etc. Most do barbecue on composite decks resulting in these stains that need to be cleaned. We will give you a discount next time you need Corte Clean for taking the time to write this review.

Posted 5 years ago

“Our Timbertech deck was installed in MN in 2007. It began to get black mold. Perhaps the ash trees around it had something to do with it? I used Corte Clean for the first time last year. It really cleaned it up. I have ordered more today to do a fall cleaning.”

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Posted 5 years ago

Thank you for the Testimonial! We have given you FREE SHIPPING for taking the time to write it. This is a $6 discount on your single order.

Posted 5 years ago

“I have been using Corte Clean for years to clean the veranda made of Trex on my house. This product removes the barbecue grease and oil, rust from the cast iron bench, in addition to the mold. Not only does it work on the decking, but on the vinyl siding and cedar roof shingles to clean mold. I put it on in the spring and fall, especially the fall on the north side of the house. The rain and snow rinses it. It makes these items look like new.”

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Posted 5 years ago

“I have Trex decking installed in 2009. It gets mold. I have tried many other products. Corte Clean works like magic. It is the only stuff that works.”

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Posted 5 years ago

Thank you for your testimonial & order today! We have discounted your order by $8. Please enjoy a beverage, on us, once you Corte Clean your Trex deck.

Posted 5 years ago

“I have Trex in Connecticut and been using Corte Clean for 4 or 5 years to clean green mold. This is a great product.”

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Posted 5 years ago

Thanks for the testimonial & order for 2 Corte Clean 2000A bags today! We discounted your order by $39.99 or gave you a bag for FREE! Please buy someone special, something special, with the money you saved.

Posted 5 years ago

Corte Clean Composite Deck Cleaner is rated 4.8 based on 707 reviews