303® Fabric Guard 128 oz. (Gallon)
SKU: 501100
67 Available  - More Coming 08/20/2022
Shipping Restrictions


Recommended by the maker of Sunbrella® Marine and Upholstery fabrics to restore water repellency and stain-protection properties.

303® Fabric Guard keeps fabrics fresh, soft, colorful and breathable, all while adding a powerful coating to repel water and prevent serious stains. Use this spray to keep outdoor covers and patio upholstery clean and free of blemishes. You can even spray it on the seams of your convertible top to prevent wicking. When applied to clean and dry fabrics, 303 Fabric Guard restores lost water and stain repellency to factory levels. Extend the life of your outdoor fabric and keep it looking like new longer with regular application of Fabric Guard. Gallon size covers up to 600 square feet.

Please Note: The manufacturer of 303 Fabric Guard recommends this product be used outdoors or in well ventilated spaces.

Applications include: marine canvaswork, boat cushions, patio cushions and furniture, patio umbrellas, awnings, protective covers and more. Use 303 Fabric Guard for powerful outdoor protection on Sunbrella fabric, acrylics, polyesters, nylons, cotton duck canvas, auto and truck interiors, campers, RVs, tents, convertible tops, awnings, outdoor furniture and more. Do not use Fabric Guard on vinyl, clear vinyl, zippers, plastics, rubber, fiberglass or imitation suede.

Usage Directions: Fabric Guard is flammable; keep the product and your treated fabric away from heat, sparks or open flames until dry. Do not smoke when applying 303 Fabric Guard. Spray until your fabric surface is evenly wet, overlapping sprayed areas, but do not saturate. Immediately wipe up any overspray before it dries.

NOTE: You should expect reduced coverage when applying Fabric Guard with a paint roller or brush. Apply to fabric above 70°F/21°C, and apply the product in full sun for a quicker drying and curing time. The treated material must be protected from rain and dew until completely cured. CURING: 12-24 hours dependent on temperature and type of material. If all of these steps are performed correctly, the material will be water-repellent at this point. You will need to reapply Fabric Guard depending on the fabric's exposure to sunlight and weather conditions. To test if the fabric needs to be re-treated, pour water on the fabric; if water soaks in and does not bead and roll off, time to re-treat. COVERAGE: 320-600 sq. ft. depending on material and application method.


  • Fabric protector spray that strengthens and restores lost water repellency to outdoor and marine fabrics.
  • Safe for use on outdoor synthetic and natural fibers.
  • Protects against water-based and oil-based stains.
  • Does not alter fabric color, breathability, feel or flammability.
  • Made in the USA.


Sale Unit: EA
Certifications: California Prop 65 Compliant
Brand: 303 Products
Size: 128 oz
Coverage: 40-75 square feet per 16 fluid ounces, (no soaking required), depending on material and application method; 320-600 square feet per gallon
Dry Time: 12-24 hours, dependent on temperature

Shipping Restrictions

Flammable items can ONLY be shipped Ground to the 48 contiguous United States.


Offline viewing of PDF documents requires Adobe Reader.

Download Adobe Reader >


303 High Tech Fabric Guard Demo on Boat Cover


Overall Rating : 4.83 12 Reviews

0 Reviews
0 Reviews
0 Reviews
Page 1 of 2
Gerald Tokasz
Verified Purchase

Did the job, thank u

Patrick Norton
Verified Purchase

I used 202 Fabric Guard on my spray skirt for my whitewater kayak. It kept the water out of my kayak which made it easier to paddle down a whitewater river.

Verified Purchase

Water flows right off after treatment.

David Lorick
Verified Purchase

Great product!

Verified Purchase

Great stuff.... beat it up on the fabric like mercury! lol

Trish Thomas

Great product

This is the first time I've tried this product and it works great. I did some research and found it to be highly recommended by other boaters. Application was really easy, just spray on and let dry, it works immediately. Now our bimini top is keeping us dry again.


keeping dry

great product this is the third time i have ordered this


great company

I purchased fabric guard to use on gazebo covers you can't beat this product, in addition the ordering process is simple and smooth, delivery was on time and sailrite always follows up to make sure the customer is happy


Good service

I'm very impressed with sailrites shipping and customer service. I'm new to upholstery, and am quite impressed with the quality of everything I've bought. Thank you sailrite.


This is the answer to your waterproofing needs!

This has become my "go-to" product! It works fantastic! It smells nice. It's easy to apply. I have used it for my outdoor umbrella over my table, a canopy, all my outdoor cushions including a futon cover. I have been using it for 2 years and recommend it to my friends!

Page 1 of 2


We're located in Indiana and would be happy to answer your calls Monday-Friday, 8am-5pm EST.

LOCAL: (260) 244-4647 | TOLL FREE: (800) 348-2769