FAQ

How to Seal and Stain Pressure Treated Wood Decking

Stain pressure-treated wood as you would stain any wood. Select a stain, prepare the surface, ensure the wood is sufficiently dry, …

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Should I stain or seal my pressure-treated deck?

Additionally, a sealer can provide UV protection to slow the rate at which your deck’s color fades. So while the pressure treatment process does provide a certain degree of protection, sealing your pressure-treated wood will help it to look better and last longer.

Do you need to seal or stain pressure-treated wood?

Although the treated wood doesn’t need to be protected against rot, staining it will help reduce surface cracking.

Do you need to seal pressure-treated wood deck?

Although treated wood is protected against decay and termite attack, the application of a water-repellent sealer to all exposed wood surfaces is recommended upon completion of construction. This sealer will help control surface checking (splitting or cracking) and provide an attractive appearance.

How long should you wait to seal and stain pressure-treated wood?

Before you can stain, wait 72 hours for pressure-treated wood to dry completely if has been kiln-dried at the lumber yard. You can check the board for tags and ask the hardware store staff if it’s already Kiln dried If not, it usually takes a few weeks to six months before you can stain.

Should I use Thompson water seal on pressure treated wood?

Some, like Thompson’s® WaterSeal® Waterproofing Wood Protector, recommend waiting 30 days before application on new pressure treated lumber. Other products, like Thompson’s® WaterSeal® Waterproofing Stain, can be applied immediately to new pressure treated lumber.

What is the best sealant for pressure treated wood?

Best Sealant for Pressure-treated Wood

  1. Ready Seal 515 5-Gallon – (Best waterproofing for pressure-treated wood)
  2. #1 Deck Premium Semi-Transparent – (Best water sealer for decks)
  3. Minwax 630510444 – (Best clear deck sealer for pressure treated wood)
  4. Cabot 140.0017437.007 – (Best oil sealer for treated wood deck)

How do you seal a pressure treated deck?

How long should you wait to stain a new pressure treated deck?

Pressure-treated lumber should be allowed to dry for at least six months before stain or any wood treatment is applied. A good test is to pour water on the boards. If it beads up, it’s still too wet. If the water soaks in, it’s ready for stain.

What happens if you don’t stain pressure treated wood?

Pressure-treated wood is a porous material. Without stain, any type of paint or sealant, rainwater, dew or snow can easily penetrate the decking. The wood will then swell until it dries when it will shrink again.

Can you put a sealer on pressure treated wood?

Sealers may be applied to pressure-treated wood as soon as the surface no longer looks wet. The sealer offers a degree of water repellency and color to outdoor wood without forming a thick coating on the surface. It will also allow any remaining moisture to slowly leave wood after the coating has been applied.

What is the best sealer for a wood deck?

  1. BEST OVERALL: Seal-Once Marine Premium Wood Sealer.
  2. BEST BANG FOR THE BUCK: Rust-Oleum Varathane Ultimate Spar Urethane Oil Based.
  3. PRESSURE-TREATED WOOD PICK: Thompson’s WaterSeal Transparent Wood Sealer.
  4. BEST FOR WATERPROOFING: Thompson’s WaterSeal Clear Wood Sealer.
  5. BEST WITH UV PROTECTION: Defy Composite Deck Sealer.

What is the green stuff on pressure treated wood?

The green color you see on treated wood is caused by chemical reactions that take place between the preservative components and the wood. Copper is still the most widely used element in wood preservatives and creates a green color on the wood.

Is it better to stain or water seal a deck?

Many deck companies recommend using a combination stain/sealer product, which is basically a sealer with pigment added. 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.

What is better than Thompsons water seal?

According to them, these are the nine most effective wood sealers:

  1. Thompson’s Water Seal. …
  2. Rainguard Premium Wood Sealer. …
  3. DEFY Crystal Clear Sealer. …
  4. Anchorseal 2. …
  5. Roxil Wood Protection Cream. …
  6. Eco-Advance Exterior Wood Waterproofer. …
  7. Ready Seal Stain and Sealer for Wood. …
  8. Pure Tung Oil Natural Wood Sealer.

Can you put stain over Thompson’s water seal?

There is NO NEED TO REMOVE THE THOMPSON’S TO STAIN OR PAINT THE DECK OR RAILINGS. Follow the directions, You must wait at least 30-45 days (I recommend 6-12 months) before applying another product.

How do you prepare a deck for sealing?

The Dos and Don’ts of Sealing the Deck

  1. DO wait 30 days before sealing a new deck.
  2. DON’T confuse paint, stain, and sealant.
  3. DO repair, wash, and sand your deck before sealing.
  4. DON’T apply sealant to damp or frosty surfaces.
  5. DO use proper tools and technique for sealing a deck.
  6. DON’T disregard temperature and time of day.

How do you apply deck sealer?

Do you need to seal pressure treated wood after staining?

If you want to showcase the natural wood grain and color while ensuring a higher level of protection, consider a clear sealant to protect the surface. A product that combines stain and sealer adds both protection and pigmentation, but sealants are not recommended to be used on top of stained wood.

How long do u have to wait to stain treated wood?

On average, you’ll want to wait 4 weeks to 6 months before staining the wood. This is largely dependent on how humid your area is and how your wood was treated.

How do you finish pressure treated wood?

Do you need to sand a 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.

Is sealing a deck necessary?

For most decks, sealing once each year is a good rule of thumb. Depending on the condition of your deck this can be adjusted, but keep in mind that you should never go beyond three years maximum before re-sealing and staining.

How do I stain my new deck for the first time?

Stain New Deck 1-2 Months after Install.

  1. Not the most common approach but can be done if you prep properly.
  2. Apply a wood deck cleaner and thoroughly scrub and or pressure wash lightly. Neutralize with a wood deck brightener. …
  3. Apply a deck stain that is "thin" in viscosity.

When Should I seal my deck?

When Should I Reseal My Deck? You should reapply wood sealer at least every three years. In many cases, you need to seal a wood deck once a year. The more foot traffic and sun exposure your deck gets, the more often you need to apply deck sealant.

How do you weatherproof treated lumber?

The easiest way to protect your treated wood underground is to seal pressure-treated wood with an all-weather wood sealer. This, of which, you can apply one coat of the sealer with a pump garden sprayer. Allow about two hours for the first layer to dry and soak into the wood grain.

How do you prepare a wood deck for staining?

How-To Prepare a Deck for Staining

  1. Thoroughly sweep the deck to remove all leaves and other debris.
  2. Liberally apply cleaner using a roller or pump sprayer (wear protective equipment to avoid contact with skin and eyes). …
  3. After 15 minutes, work the cleaner into the surface using a stiff synthetic-bristle brush.

Why does stain peel off my deck?

Deck stains will generally peel for two basic reasons: over application and poor adhesion. This is simple — too much stain on the surface of the wood. With deck stains, specifically with semi-transparent finishes, more is not better. You only want to apply as much product as the wood can easily absorb.

Do you seal or stain wood first?

Once you’ve chosen a sealant strength, apply it to the end grain before you stain. Sand off any sealer that gets on the face of the board before you stain.

What is the difference between green and brown pressure treated wood?

Brown timber is a traditional dark brown coloured wood, which follows the same pressure treated process as green timber to extend the timbers life but the only difference is to achieve the brown colour, a brown dye is added to the copper preservative mix.

What is the difference between green treated and pressure treated wood?

Green timber has a naturally-pale, wooden colour but you will also note a slight green tint or fleck caused by the pressure-treating process. The chemicals used in pressure treatment are copper based which react with both the sap of the timber and the air and then oxidise, creating green flecks on the surface.

How do you keep pressure treated wood from turning gray?

ULTRAVIOLET PROTECTION If you’re looking to maintain the original color of pressure-treated wood longer, you will need to not only clean your deck periodically, but also apply a water-repellent finish with an ultraviolet stabilizer. The stabilizer will not prevent eventual discoloration, but will slow the process.

Which is better oil based or water based deck stain?

Water-based stains require a little more time and effort than oils, but it pays off with significantly greater durability. Oil based stains are easy to apply and take less effort, but they will not last nearly as long as a water based stain.

How do you apply Thompson’s water seal and stain?

Which deck stain lasts the longest?

In general, an oil-based deck stain will last the longest, but it also depends on the type of wood, the weather conditions, and how long the deck has gone unprotected before staining.

Does Cabot stain have a sealer in it?

Features. Cabot Waterproofing is an advanced-technology silicone sealer that provides unsurpassed waterproofing protection to a multitude of surfaces.

How long does Thompson water seal last?

4 years

If applied correctly, Water Seal will last up to 4 years. This is dependent on conditions such as orientation of the wall and local climate.

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