3M Marine mildew block is a non toxics spray to be used indoor and outdoors on marine surfaces where mildew growth is a concern. After cleaning any mildew from the surfaces to be treated, spraying 3M Mildew Block creates an invisible barrier that prevents mold and mildew growth.
Specifically designed for harsh marine environments. Helps keep surfaces looking cleaner and newer longer, reducing amount of scrubbing and harsh chemicals needed to remove mildew. Ideal for above waterline applications. Works on variety of cleaned surfaces, such as carpeting, deck furniture, rub rails, sail fabric, seat cushions, showers, etc. 3M Marine also offers a stain remover to eliminate mildew stains before applying the block spray.
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Mildew Block in 16.9 fluid ounce spray bottle.
Mold and Mildew Cleaners
I'd like to know if it will work on fabric curtains? The fabric is 100% cotton and in a marine environment.
I have no idea if it will work on cotton. It has worked very well on the topsides of my wooden boat here in Georgia.
I'm not sure if you can use it on fabric. Why don't you contact 3M?
Not too sure about cotton. I used it on Sunbrella and it worked great. The underside of my top would milldue because it was closed up a lot. Applied this at the beginning of the season after cleaning the top and it was fine all season. Just a note if you use it on a top you will need to water proof the outside after cleaning and this treatment. I found out the hard way. Don
Thanks Thomas. I'm looking for something that I can spray on new curtains to prevent mold. Perhaps this is the product I need.
It worked very well on plastic and gel-coat, but I never usrd it on cotton fabric. You might try it first on a non visible area of the fabric to see how it reacts before using it on a large portion of the fabric.Good luck with it!
Thanks for the heads up on the waterproofing! Fortunately the curtains will be inside but if I should use it on a different item for outside use, the waterproofing tip will come in handy.
We live in the southeast corner of South Carolina, within a couple miles of the coast. We have a fair amount of humidity. Our screen porch faces a wet land that provides heavy shade. There is little to no direct sunlight into the screen room. The spray was effective at reducing the progress of mold/mildew on our seat cushions which are made out of sunbrella, that isn't suppose to mold. The spray reduced the frequency that we had to clean the cushions...we made it through an entire season before we had to take the covers off the cushions and clean them.
How about use in bathrooms? Shower stall?
Yes, this will work for bathroom shower stalls. Thank you.
I started using this product when it was marketed to the public for bathroom use, so yes it works there. I haven't tried it on grout, but I have used it on my ceiling to prevent mold growth from shower steam.
Not sure about that. Used it as directed on my boat top. The underside mildewed heavy by mid summer in recent years. Applied the spray this spring and no mildew through the whole season.
Worked very well on wooden topsides in Georgia for nearly two years, but I've not tried it in any enclosed spaces.
can we use this product on vinyl seats on our boat?
I have used many 3M products for over 40 years. I purchased this because I own a 25 ft Crest tri-toon pontoon boat with white vinyl seats and couches that mildew terribly. My experience with this product is that it is totally ineffective. That being said, yes, it is safe to use on vinyl boat seats.
I used it on my new boat seats no problem.
We did use it on the seats on our boat with no problems.
I used it on our new interior fabric cushions, and it has worked fine. I did not use it on vinyl, but it seems mild enough that I think you can rely on whatever 3M says it is safe for.
I use this on difficult to clean areas prone to mold and mildew such as lockers and compartments where air circulation is poor. I found it to be very effective. It is invisible when dry leaving no apparent film layer.
I've used this product for several years with good results. It helps prevent the growth of mildew on boat upholstery especially during lay up.
Lake Martin, Al
I dropper the container from less then two feet, the container split. Saved some but it seemed greasy.