Unlike paint. which coats the surface, stains penetrate and allow the natural texture of the substrate (surface being stained) to show through. Whether you choose to accent the grain with a semi-transparent stain or mask the grain with an opaque stain, all stains provide some measure of substrate protection. This protective quality is highly important for exterior applications. Exterior stains are primarily used on wood siding and shingles, decks, outdoor structures and furniture. Before you learn about all of your available options, use these questions to start thinking about what your project needs are:
- Are you applying stain to a previously stained or painted surface? Do you want the grain and natural color of the wood to show through the stain? Are you interested in a color that is not a wood tone, such as blue or green? Is lasting performance or external appearance your primary concern? Does the surface need to be stripped, sanded or cleaned?
Quality, Type, Life and Surface Preparation
It&rsquo,s always important to buy high-quality stains or paints to protect substrates, but it&rsquo,s especially important when it comes to exterior projects. Exterior surfaces and furniture are subjected to harsh conditions day in and day out, from moisture and wind to direct sunlight and fluctuating temperatures. A good stain will last longer, saving you money and time spent on refinishing, so be sure to think about long-term benefits in addition to initial cost.
Water-Based vs. Oil-Based: Like paints, stains are available in oil-based and water-based formulas. Water-based stains offer better adhesion to surfaces that have been previously painted or stained with oil-based stain. Water-based stains are also recommended for woods that have a natural resistance to rotting, such as cedar, redwood and cypress. Oil-based stains are generally recommended for decks and other areas exposed to particularly harsh conditions. There are some newer latex/oil stains that offer benefits of both oil- and water-based stains.
- Water-based stains are breathable, so they won&rsquo,t trap moisture Oil-based stains offer better penetration and durability Some manufacturers offer hybrid stains
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