When Should I seal my deck?

Depending on the type of wood your deck is made of, you may have to wait anywhere from three months to a year for the fibers in the wood to open up. If your deck is older, you should consider resealing your deck every 12 to 18 months. The season : Many sealing products work best in certain temperature ranges.
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What time of year should I seal my deck?

Summer is generally the best time to waterproof your deck because it gives you the opportunity to clean it thoroughly and seal it properly without worrying about rain. It takes about two to three days for a deck to completely dry out after sealing and you'll need up to six days for it to be fully functional again.
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How long should you wait before staining or sealing a new deck?

New wooden decks should always receive a coat of paint or stain. Generally, all new decks should dry out for at least 30 days before stain or paint is applied. Although a finish can be applied immediately after construction, more work is involved, so it's best to let the wood fully dry before finishing.
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At what temperature can I seal my deck?

For clear sealer, the deck surface and air temperature must be above 50 degrees Fahrenheit during application and drying time. For deck stain, the deck surface and air temperature should be between 50 and 95 Fahrenheit for application and drying.
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When Should I seal my pressure treated deck?

A newly built deck that uses pressurized wood will need time to dry completely before a sealer can be applied. The chemicals used to treat the wood leave moisture behind, and depending on the climate, it can take anywhere from a few weeks to a few months until it's dry enough to seal.
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When to Seal or Stain a New Wood Deck



How long should you wait to seal pressure treated wood?

Following construction, most manufacturers of stains and paints recommend a waiting period – from a week to two months – before applying a finish to treated wood, if the project was built with lumber that was not kiln-dried after treatment (KDAT).
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Is it better to stain or seal a deck?

Although a wood stain is more expensive than a sealer, it can last up to 5 times longer and looks more professional. So you certainly get your money's worth. Here at DeckMaster™, we recommend using wood stains for your deck and fence maintenance.
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Do I need to sand deck before sealing?

Once dry, these wood fibers can remain raised and may cause splinters. For this reason, light but thoroughly sanding your wood deck is a necessary step before staining or sealing. This crucial step will ensure that your refinishing job gives great results.
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Should I seal my deck before winter?

The Right Temperature

When fibers expand, water can seep inside and freeze, causing even more damage. Sealing your deck before the harsh winter season can protect against this wear-and-tear and prevent the need for more work to be done in the spring.
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What time of year should I stain my deck?

The best time to stain your deck is either the spring or the fall. If you stain your deck in the summer, make sure you do it out of the direct sunlight. Applying a deck stain in direct sun will cause the stain to dry to quickly and can result in premature stain failure.
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What happens if I stain pressure-treated wood too soon?

If you stain pressure-treated wood too soon, the stain will be unable to fully penetrate the wood, and you will not get the protective benefits of the stain. What is the best stain for pressure-treated wood? An oil-based stain is the best for pressure-treated wood.
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How long will a deck last without stain?

Which material lasts longer? A deck made of untreated wood can last anywhere from 10 to 30 years. Decks made of treated wood and composite materials can last as long as 50 years.
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What temperature is too cold to stain a deck?

Avoid the Cold

If you're staining your deck in the spring or fall, wait for a day with highs above 50 degrees Fahrenheit. Also, make sure freezing temperatures aren't in the forecast for that night. If it drops below 32 degrees Fahrenheit before the stain has thoroughly dried, it can hinder the curing process.
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Is it better to stain a deck in the fall or spring?

Because stain requires a dry deck for a secure application, a week of dry fall weather is ideal for staining your deck than in summer or spring humidity. More specifically, the moderate temperatures of early fall are optimal for staining, as the later fall weeks may bring colder days that are too chilly for your stain.
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How much does deck sealing cost?

Cost to Seal a Deck

Sealing a deck costs $906 or typically between $551 and $1,293. You'll pay $0.75 to $4 per square foot for both materials and labor. Labor alone makes up 50% to 75% of the total price. Cost factors include regional worker rates, complexity, size, prep needs and accessibility.
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How long after power washing can you seal a deck?

Sand Your Deck Before Sealing

After you've pressure washed your deck, you'll need to wait for it to completely dry. Sometimes, this can take as long as 48-hours. Once it's dry, you'll want to sand your deck lightly. This is necessary to remove any splinters or fuzzy patches that pressure washing can cause.
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Should you treat a new deck?

Brand new decking needs to left alone to weather naturally so that all the pre-treatment has eroded, ready to be oiled. We recommend you wait around six months for it to be fully eroded. Once you've waited for the coating to erode, treat your new decking as normal with oil or stain.
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Can you seal a deck in cold weather?

Don't seal a deck below 50 degrees.

You don't want to begin the sealing process until you can safely guarantee the temperature will remain above 50 degrees for at least 48 hours.
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What is the best way to protect a new deck?

The only way to protect your deck successfully over time is to apply a deck preservative. There are sealers, stains and paints on the market especially designed for deck use. Aesthetically, they look very different, but they protect wood and composite decks from moisture damage, fungus growth and ultraviolet light.
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Do I need to seal the underside of my deck?

It is not necessary to stain the underside of your deck for protection from the elements, especially if you use pressure-treated wood, which helps keep wood-boring insects out.
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What is the best wood sealer for decks?

  • BEST OVERALL: Seal-Once Marine Premium Wood Sealer.
  • BEST BANG FOR THE BUCK: Rust-Oleum Varathane Ultimate Spar Urethane Oil Based.
  • PRESSURE-TREATED WOOD PICK: Thompson's WaterSeal Transparent Wood Sealer.
  • BEST FOR WATERPROOFING: Thompson's WaterSeal Clear Wood Sealer.
  • BEST WITH UV PROTECTION: Defy Composite Deck Sealer.
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What happens if you don't seal stained wood?

What happens if you don't seal stained wood? If you leave stained wood without a sealer on top, it will gradually lose its moisture content and dry out. Over time, the wood may look dull and lifeless as the stain wears out due to the lack of wood sealing and protection.
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Do you need to apply a sealer after staining a deck?

Applying a clear sealer or polyurethane over a deck stain will cause more problems than it is worth. If you want a clear finish then you can strip off any old stain and start fresh with bare wood. Then you can apply a clear sealer if that is the look you are going for.
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Is Thompson's water seal better than stain?

The advantage of this, they say, is the sealer provides additional protection against water and weather damage, while the stain helps reduce fading from UV rays. Sealers should last at least a year, with some lasting up to three years.
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