303 Products Marine Fabric Guard – Water Repellent & Stain Shielding Fabric Spray, Safe for All Outdoor Upholstery, Simple & Easy to Use, Protectant Spray for Boats, 1 Gallon

This product (High Tech Fabric Guard 30674) works great - 100% of the water now beads up and my cloth top looks better than new !!!My Situation:The very first time my brand new, light beige cloth convertible top got wet I realized it came from the car dealer and/or factory either untreated and/or seriously under treated because water just soaked right into the cloth as evidenced by the darker cloth color when wet.End Result:After applying two coats of this product 100% of the water beaded-up and rolled right off the top. Nothing soaked in at all - zero wet spots on the cloth top. (Since the top is a light beige color any wet spots would show up slightly darker in color.) Any water that didn't roll off the top was absorbed using The Absorber 51149 sponge-cloth available on Amazon or at WalMart.Process:1) I gently cleaned my cloth convertible top using 303 Fabric Top Cleaner (303-30550). To do this I first rinsed the top with fresh water, then sprayed the cleaner on & gently scrubbed using a very soft brush (I used Star Brite Soft Yellow Wash Brush 040013 available on Amazon). A stiffer brush or too vigorous scrubbing could damage the fabric, scuffing the threads and creating a fuzzy look to the fabric. I cleaned the top in slightly overlapping areas about 18” x 18”.2) I rinsed the top and allowed it to dry thoroughly.3) Using a 2" paint brush and small container of 303 High Tech Fabric Guard 30674, I applied the Fabric Guard brushing it on in a manner similar to painting. By overlapping slightly I made certain I applied the product to every square inch of the top.4) I allowed the top to dry several hours and applied a second coat of Fabric Guard.Notes:1) When applying the clear Fabric Guard liquid with a 2" paint brush it will start to have a slightly white/foamy appearance - this will go away completely and the product will dry clear.2) After each application I noticed a VERY slight, very fine clear crystalline residue on my cloth top. You had to look very closely to see it - it had just a little bit of sparkle to it in the sunlight. This brushed off quickly and easily & probably would have blown off the first time I drove the car.3) Some reviewers seem to have issues relating to getting the product on the car itself saying it was hard to remove. I didn’t have this problem. The few times that I over-brushed or got small drops Fabric Guard on the car itself I simply gently wiped it with a soft paper towel and it didn't damage anything or leave any residual coating. It seemed to wipe off 100% with a soft paper towel.4) READ THE LABEL !!! The first paragraph covers some surfaces that you CANNOT use this product on without causing damage. These include rubber, vinyl, clear vinyl, plastics, etc. Since the product's Material Safety Data Sheet lists the contents as Petroleum Distillates, just a wild guess but prolonged contact with this product may have a solvent effect on materials such as vinyl or plastic.5) I wouldn't purchase 303 Fabric Cleaner again – I think a bucket of hot water with a scant squirt of Dawn dish detergent would do just as good of a job. Of course, you will need to completely rinse the top and allow it dry thoroughly before applying 303 Fabric Guard.6) I have no idea how long my cloth top will remain water repellant after applying Fabric Guard. I plan on doing this process every 6 to 8 months or sooner if I notice any water being absorbed by the cloth top.

I use the product with a sprayer on the sunbrella brand canvas on my boat, every 4 years, product works very well

303 products are my go-to for all fabric cleaning and protection. This 303 was easy to use and when following the instructions I ended up with a stain free, high quality, beautiful restored 23 year old canvas cover. Needless to say the color did not run or stain from this product and I have full confidence the UV Protection will help keep this cover in good shape for many more years. Couldn't be happier as a new cover of this quality would cost over $4K. This cover came out looking so good my neighbors thought it was brand new.

Bought this 22 year old convertible a year ago. Didn't look like the top had ever been weather treated, although the car's mostly been garage-kept. Cleaned it once with 303 Products' 30571CST Tonneau Cover and Convertible Top Cleaner, then liberally applied 303 Products' Marine Fabric Guard with a spray bottle and allowed it to dry in the sun for 2 days. Photo is after a spring rain storm came through 3 days after applying the Marine Fabric Guard. Couldn't be happier! Will be repeating this process every spring from now on.

Seems like a great product, but after so many terrible comments about the spray bottle, I decided to get my own instead. For the price of an empty spray bottle, I instead bought a whole bottle of not-to-be-named glass cleaner (see disguised picture!), which sprayed the whole project perfectly. Plus, I still have a ton of 303 in the cheaper-by-the-ounce refill for later (they say it keeps for at least two years, but I still may need to make some friends to help use it all up). Just need to be sure to properly rinse the sprayer well and get all of the water out before using. I rinsed the sprayer again after the 303 treatment, and it seems ready to go again for all of the leftover product.As to masking my Jeep for the soft top treatment, I just used old sheets as shown - no need for tape as you can just tuck it in under the top and door edges. Plus, of course I removed the soft top windows for separate treatment with a soaked cloth. No risk of getting it on the clear plastic and ruining the windows that way. In the end, after 24+ hours of curing in this summer's Texas Heat, the water beads up nicely as seen in the last photo. Only time will tell how long this lasts, but I'm thoroughly happy so far. Just Four Stars though, until they can see fit to provide such a basic thing as a decent spray bottle.