![]() One will need a canvas preservative, paint brush and a ladder to accomplish the task of waterproofing. Several methods of canvas tent waterproofing are available, which will keep the tent free from leaks for some period of time. No matter how durable the tents are, they will eventually leak during the rains. People who camp in canvas tents, need to waterproof their tents. The waterproofing treatment does not affect the fabric’s other qualities. One should ensure that the waterproofing procedure is carried out in a well-ventilated place, preferably outdoors, as the treatment involves fumes, which are not appropriate to be inhaled. Brushing petroleum sealant onto the canvas is also another way of waterproofing. If the water seeps into the canvas, then the coat was not enough and needs to be sprayed again. Once the canvas is dry, it can be checked by tossing it in a bucket of water. The canvas needs to be cleaned thoroughly and then evenly sprayed with the fluoropolymer-based product. ![]() A fluoropolymer-based product is the best for acrylic canvas. How to Waterproof Canvasįor acrylic canvas, silicone treatment is not recommended as silicone is incompatible to it. The only negative factor is its high cost. On the other hand, the acrylic canvas is a tight-weave fabric, which breathes stands up to ultraviolet radiation, snubs mildew and resists staining. Condensation causes the fabric to become wet, eventually leading to mildew. The vinyl-coated fabric, unlike the traditional cotton canvas does not breathe, and needs to be ventilated. However, cotton canvas has a special affinity to mildew, thus it has been replaced by either woven acrylic or vinyl-coated polyester. The cotton fibers in the cotton canvas swell, when they get wet, thereby sealing the weave. Cotton canvas has been the popular waterproof canvas fabric for a long time. Raw canvas has water-resisting properties, however, if the canvas is not waterproofed, water will seep through it, resulting in mildew build up.
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