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Wood stain does go bad, but it will last in the can for between three and six years, provided you use proper storage techniques. Storing wood stain in open containers or in extremely low or high temperatures will cause your wood stain to become unusable much more quickly. Water- and latex-based wood stains typically last for just two to four years, while oil-based wood stains can last for three to six years.

If you’re deciding between limewash versus whitewash, know that both have a chalky matte appearance. Limewash is made from lime, water, and sometimes pigment, while whitewash consists of lime, water, white chalk, and binders (though you can get a similar look with watered-down white paint). Whitewash has fewer options for color customization, and it sits on surfaces instead of being absorbed into them, which can trap moisture. Whitewashing costs less—about $1.40 to $4.20 per square foot.

If you paint a vinyl fence, it will likely stick to it for only a brief amount of time. This is because vinyl is not a porous material, so it's not an ideal surface for holding paint. Initially, paint will stick to your fence, but it will eventually peel off. Applying primer before painting your vinyl fence will help paint last longer. Certain primers are well-suited to vinyl, which means you can paint vinyl siding with the proper preparation.

DIY is possible but presents risks of uneven surfaces or improper adhesion; professionals offer expertise to ensure a lasting finish.