This waterproof patch and seal spray stops leaks and prevents water seepage by sealing out water, air, and moisture. It is suitable for oil-based paint and latex paint. The price drops from $17.99 to $12.90 to $11.48 when you clip the $1.42 off coupon on the product page. Shipping is free for prime members or on orders over $25.

Clip the $1.42 off coupon on the product page