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Why Chlorine Bleach or other sodium hypochlorite based products is Not Smart for Cleaning Composites!

Corte LLC freely admits that sodium hypochlorite based products generally appear to quickly bleach out mold, on most composites, the first several times used. Don’t be fooled! The following photo is an example of what a composite deck looks like when sodium hypochlorite, the active ingredient in chlorine bleach, and common deck cleaners generally designed to clean “wood” of “mildew”, which is not common on composites, has been repeatedly used. Notice how the sodium hypochlorite no longer bleaches out the mold stains. Notice how the composites are turning solid black, and no longer spotting, becoming deeply rooted and infested in the composite, while it feeds off of the tannin from exposed wood fibers. The sodium hypochlorite sterilizes the composite of everything except the mold, making it a perfect environment for mold spores to grow when they receive moisture. Perhaps this explains why so many composite manufacturers that have routinely recommended chlorine bleach or other sodium hypochlorite based cleaners for cleaning common black mold, have ended up with so many unhappy customers. The left side of the below photo shows how water magnifies mold stains, which have been exacerbated by the routine use of products containing sodium hypochlorite. The below photo shows how Corte*Clean® will clean these stains when sodium hypochlorite no longer bleaches out the mold stains. This photo represents a classic example of why sodium hypochlorite should never be recommended or used to clean composites of mold stains.

CORTE-CLEAN_CHOICEDEK_-1_WORKING

Left side of picture shows a mold stained composite deck exacerbated by the previous routine use of sodium hypochlorite. Right side of Photo shows Corte*Clean® cleaning this deck.

Sodium Hypochlorite is scientifically proven to exacerbate mold issues. This is why those that ignore science, & recommend or use sodium hypochlorite to clean mold, generally experience the rapid Return of mold stains! This is the #1 complaint in the composite decking industry.

 

Why sodium hypochlorite isn’t smart for mold cleaning.

    • Kills plants grass surrounding composites.
    • Off-Gasses chlorine smell when used and after being used.
    • Causes Corrosion to Structural Metal Fasteners & Connectors, the #2 biggest issue in the decking industry, which leads to rust stains around metal fasteners, such as screws or nails which is expensive to remove with another cleaning product, which is not compatible with sodium hypochlorite.
    • Need to purchase and use other expensive products for specific stains such as grease, oil, rust, tannin stains, etc. which are not compatible with sodium hypochlorite.
    • Doesn’t eliminate “tannin bleeding” which can feed funguses such as mold.
    • Scientifically proven to exacerbate mold issues, resulting in its rapid return, leading to the #1 complaint in the composite decking industry.

Composite cleaned with chlorine bleach.

Same composite deck/spot after being Corte Cleaned! Composite is wet with water.

Chlorine bleached. The composite is still wet after being rinsed with water. See the black mold stains?


Same composite deck (as above photo). Composite is wet with water. Water magnifies stains on composites. Will you be another victim of what is commonly known in the scientific community as; The Chlorine Bleach Scam?

Same composite deck approx. 2 weeks later. Composite is dry. See the mold returning?


Same composite deck. Composite is wet with water. Water magnifies stains on composites. Will you be another victim of what is commonly known in the scientific community as; The Chlorine Bleach Scam?

Same composite deck. Composite is wet with water. Water magnifies stains on composites.


Same composite deck/spot after being Corte Cleaned! Composite is wet with water.

Same composite deck after being Corte Cleaned! Composite is wet with water.

Here is a testimonial/review of a sodium hypochlorite based product that proves the point by a composite deck owner, however, this deck likely doesn’t have “mildew” but rather common black mold stains.

Mildew spots – September 16, 2013

JimC – Review provided by Lowes (through Google Shopping)

September 16, 2013

I have Trex decking. I have to clean it once or twice a year to get rid of mildew spots, which are getting worse and worse and harder to deal with. The folks at Trex recommended the [sodium hypochlorite] product. It made the spots better, but certainly didn’t get rid of them. I still have a “leopard pattern” deck.


Perhaps it is because this product was originally designed and labled to clean “wood” of “mildew”, not plastic/wood composites of common black mold stains?

Trex® with mushrooms attached to the wood fiber & feeding off the tannins. Failure to thoroughly Corte*Clean® the wood of which most composites are partially made of tannins, to eliminate “tannin bleeding” feeds funguses. This deck had only been previously cleaned with sodium hypochlorite.

 

JimC – Review provided by Lowes

September 16, 2013
I have Trex decking. I have to clean it once or twice a year to get rid of mildew spots, which are getting worse and worse and harder to deal with. The folks at Trex recommended the OXXXXXc product. It made the spots better, but certainly didn’t get rid of them. I still have a “leopard pattern” deck.
Perhaps it is because this product was originally designed to clean “wood” of “mildew”, not plastic/wood composites of common black mold stains?
Corrosion to structural metal decking hardware, the #1 risk unsuspecting composite owners face...
Examples of corroded structural metal decking hardware…
Trex® decking, only cleaned with SODIUM HYPOCHLORITE FOR 15 YEARS. Not only is it MOLD INFESTED but notice the CORRODED SCREWS! It doesn’t take a genius to know that ignoring metal decking hardware manufacturer disclosures of “corrosion risks” of “cleaning chemicals” isn’t smart! If yours look like this, PLEASE have your decking inspected for corrosion by a professional and replaced if necessary.
 Deck_sodium_hypochlorite_mold_trex_
deck_collapse_sodium_hypochlorite_mold

Why is Corte-Clean® Better?

It is developed exclusively for cleaning composite decks, docks, and fences of stains caused by Mold & Mildew, Grease, Oil, Rust, BBQ and just about anything else staining a composite surface.

  • Less expensive than purchasing & using up to 5 other time consuming cleaning products for specific staining issues such as; mold, grease/oil, rust/tannin stains, etc.
  • No need to add expensive chlorine bleach.
  • Biodegradable.
  • Up to an 12 month shelf life if stored in dry, cool, area out of direct sunlight.
  • Non-Corrosive to structural metal decking hardware.

CORTE-CLEAN_SIMPSON-STRONG-TIE-02

Photo of galvanized Simpson Strong-Tie® & Swan® Stainless steel screw, most commonly used in the constructions of composite decks.  These items were soaked in Corte*Clean® at maximum strength until all water has evaporated. Don’t try this with sodium hypochlorite and watch the metal dissolve. What do you think happens with sodium hypochlorite when used routinely “Spring and Fall”? NOT SMART!

Corte*Cleaned. Notice no black or red corrosion around screws.

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2 Fifer Ave #120, Corte Madera, CA 94925, US

CORTE*CLEAN® is the proven solution for cleaning and inexpensively routinely maintaining composites of all common staining issues including mold & mildew stains, black spots, grease, oil, barbecue, tannin, leaf, pine needle, chalk, berries, sunscreen, olive oil, citronella candle oil, peanut butter, red wine, pet food, hard water, grass, ground in dirt, clay, brick, flower pot, rust, grime, green slime and most other stains that saturate the porous surfaces of most composites.

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