Canvas is a natural material and needs to be maintained. Exposure to UV rays and rot from moisture are two of the fastest ways to kill any canvas. You know that fresh-canvas smell? Well when it loses that smell it means it’s time to treat your top or it won’t be long for this world. Beachwood Canvas stocks Canvak, and can sell you a gallon of it. Canvak is an old-school brush- or spray-on treatment that will help extend the life of your canvas. Or, if you’d rather get something local, Janquitto suggests Scotch-Guard or possibly Thompson’s new canvas water seal.