In the old days, Scotchguard made items waterproof. You could hold whatever you sprayed under running water and it would just bead right off. Water would never, ever stick to the fabric or item you sprayed.
Is Scotchgard good for waterproofing?
Scotchgard is certainly one of the most recognized brands for waterproofing materials. We chose the heavy duty version, since that will be the best for outdoor gear and the rugged materials we tend to utilize. This includes tents, outerwear, canvas, boat and sporting gear, canvas, and patio furniture.
Does Scotchgard work outside?
Use Scotchgard™ Water & Sun Shield on fabric patio furniture, sporting gear, boat covers, umbrellas, awnings, tarps, flags, tents, and other outdoor fabrics. In general, Scotchgard™ Sun & Water Shield can be used on patio furniture fabrics, nylon, canvas, polyester, and leather.
Scotchgard is part of a group of chemical called surfactants, which means that its particles immediately seek the surface of what ever it comes in contact with. These particles help to keep staining substances from binding with the material and creating a permanent stain.