Best Deck Sealer for Pressure Treated Wood

Top 5 Best Deck Sealer for Pressure Treated Wood (Reviews & Buyers’ Guide 2021)

Watching one’s properties, especially those made from wood, concrete, and, masonry deteriorating due to the constant attack of elements such as moisture, temperature, and ultraviolet rays, can be disheartening.

Years of building memories with these properties can be gone in a twinkle of an eye if proper action is not taken to restore them. For this reason, the use of deck sealers and strainers has become an essential part of treating pressure-treated woods, especially the exterior ones. Deck Sealer is a clear finish that coats the surface of a deck, protecting it from moisture, ultraviolet rays, and extreme temperatures.

If you have this exterior property, you can’t bear to lose. Your next wise move should be considering getting a deck sealer among the best sealer for pressure treated-woods.

Deck sealers help you protect and save what you build. They help form a protective covering on pressure-treated wood decks in your house, yard, and gardens and wherever you have them, so they serve you better.

When used appropriately on pressure-treated wood, Deck sealer keeps decks looking smooth, shiny, and fresh-looking over the years. We have also carefully selected the top 5 best deck sealer for pressure treated wood. This best deck sealer review will walk you through the factors you should look out for before you purchase the best decker sealer for pressure-treated woods.

Choose from our Top 3

Product
Best Buy
Ready Seal 505
Editor's Pick
#1 Deck Premium
Affordable
DEFY Extreme
Image
Ready Seal 505 Exterior Stain and Sealer for Wood, 5-Gallon, Light Oak
#1 Deck Premium Semi-Transparent Wood Stain for Decks, Fences, & Siding - 2.5 Gallon (Light Walnut)
DEFY Extreme 1 Gallon Semi-Transparent Exterior Wood Stain, Cedar Tone
Prime Status
Star Rating
Size
1 Gallon
2.5 Gallon
1 Gallon
Best Buy
Product
Ready Seal 505
Image
Ready Seal 505 Exterior Stain and Sealer for Wood, 5-Gallon, Light Oak
Prime Status
Star Rating
Size
1 Gallon
Where to Buy
Editor's Pick
Product
#1 Deck Premium
Image
#1 Deck Premium Semi-Transparent Wood Stain for Decks, Fences, & Siding - 2.5 Gallon (Light Walnut)
Prime Status
Star Rating
Size
2.5 Gallon
Where to Buy
Affordable
Product
DEFY Extreme
Image
DEFY Extreme 1 Gallon Semi-Transparent Exterior Wood Stain, Cedar Tone
Prime Status
Star Rating
Size
1 Gallon
Where to Buy

Last update on 2021-07-28 / Affiliate links / Images from Amazon Product Advertising API

What are Pressure- Treated Woods?

Pressure-treated woods are woods treated with liquid chemicals by submerging them in these chemicals to prevent decay from insects and other elements like moisture and UV rays, thereby extending their life.

Does Pressure Treated Woods Need to be sealed?

Because many kinds of wood aren’t manufactured to withstand adverse actions from harsh elements such as wind gusts, UV rays, moisture, they are treated with chemicals. Yet, these pressure-treated woods still require additional treatments from sealants. 

When moisture seeps into woods, they become absorbed and evaporate on sunny days. This causes them to expand and contract over time. Intense sun rays can also cause peeling and fading of exterior decks and furniture, changing their looks. Hence, Pressure-treated woods still need to be sealed against these elements as sealing helps prevent splitting or cracking of woods and provides an attractive appearance.

Is it better to Paint or Stain Pressure-Treated Woods?

Pains are less likely to adhere to pressure-treated woods because of the chemicals. Hence experts have recommended that pressure-treated woods be sealed or stained overpainting.

Top 5 Best Deck Sealer for Pressure Treated Wood

1. Ready Seal 505 Exterior Stain and Sealer for Wood, 5-Gallon, Light Oak

Special Details:Brand: Ready Seal, Item Weight: 1 pound, Item Model Number: 505, Size: 5 Gallon, Material: ABS, Pattern: Stain and Sealer, Product Dimension: 12 x 12 x 13.8 inches, Color: Light Oak

Ready Seal 505 Exterior Stain and Sealer is another deck sealer that can be used on pressure-treated woods. It is an excellent deck sealer with great coverage.

In contrast to Rainguard 1 Gal Homeowner Gloss Sealer, Ready Seal 505 Exterior stain and steal is an oil-based sealer and stain in one. The oil-based nature of this sealant allows the texture and grain of your pressure-treated wood to remain visible. Readyseal stain and sealer is suitable for use on all exterior wood projects, including decks. 

This stain and sealer from Ready Seal have a unique formula that penetrates deeply into your pressure-treated wood to protect and preserve it against elements such as mold, mildew, and damaging UV rays. This enhances the natural beauty of your outdoor pressure-treated wooden deck. This makes this sealer among the best deck sealer for pressure-treated woods.

Besides, Ready Seal Exterior Stain and Sealer do not require a primer before application to your pressure-treated wood deck. Some quick tips that you may need before applying this deck sealer may include ensuring that the surface is clean of mildew, dust, oil, grease, and dirt, also, before staining or applying this deck sealer for your pressure-treated woods, ensuring that the wood is completely dried for about 48 to 72 hours depending on the weather condition. 

Ready Seal Exterior Stain and Sealer is eco-friendly. However, plants and vegetation can be covered with a drop cloth before application to avoid pollution. When applying multiple containers of Ready Seal sealer for your pressure-treated wood, ensure to blend for consistency.

Sale
Ready Seal 505 Exterior Stain and Sealer for Wood, 5-Gallon, Light Oak
  • Requires no primer. Ready Seal is darkest when first applied. It reaches its true color in approximately 14 days. Do not apply Ready Seal over painted or newly stained surfaces. Sealed surfaces inhibit penetration.
  • May be applied using sprayer, roller or brush onto the woods surface.
  • Requires no back brushing and will nerver leave runs, laps, or streaks.
  • Requires no wet-line application, the product will blend itself and can be applied in any temperature range for proper application.Easy maintenance - no sanding or stripping required for re-application
  • Requires no diluting or thinning prior to spray applications.

Last update on 2021-07-28 / Affiliate links / Images from Amazon Product Advertising API

Ready Seal may appear dark when first applied, but it reaches its true color approximately 14 days. You would be happy with the final color. It dries evenly with no runs or heavy or thin spots to show. You can apply this deck sealer with a brush, roller, or sprayer.

Pros

  • Ready Seal deck sealer is easy to use
  • It is durable
  • You get the best value for your money
  • It has good coverage.
  • This deck sealer lasts long
  • It does not require primer.
  • This deck sealer for pressure treated wood dries evenly
  • It is ecofriendly.
  • This deck sealer does not require back brushing
  • The long term maintenance is easy.

Cons

  • It cannot be applied over a painted or newly stained surfaces.
  • The color may fade in six months.

2. #1 Deck Premium Semi-Transparent Wood Stain for Decks, Fences, & Siding – 2.5 Gallon (Dark Walnut)

Special Details: Manufacturer: SaverSystems, Part Number: 300574, Package Dimension: 15.98 x 9.84 x 7.4 inches, Size: 2.5 gallons, Color: Dark Walnut, Finish: Flat, Material: Water Based

After using this deck sealer for pressure-treated woods to improve the appearance of a 15-year-old fence, we are happy to report this water-based deck sealer. #1 Deck Premium Semi-Transparent Wood Stain is what you should get for your pressure-treated pine, cedar, fir, redwood, and other softwoods. #Deck Premium sealer is a 2-in-1 sealant: a stain and sealer. With this semi-transparent deck sealer for pressure-treated woods, you will be building the best experience with staining and sealing your deck. 

When used on softwoods, hardwoods, and other pressure-treated woods, this deck sealant functions by adding color to the woods, sealing them to prevent damage caused by water penetration. However, #1 Deck Premium semi-transparent deck sealer, when used on hardwoods, will require more frequent maintenance coats. #1 deck Premium Semi-transparent Wood Stain prevents graying, peeling, and fading of woods.

Likewise, this #1Deck sealer from SaverSystems is available in 5 beautiful, semi-transparent deck stain colors that allow the wood grain to show through. Each of these colors has dry to flat and natural-looking finishes that enhance the beauty of your exterior deck woods.

To add to the beauty of this wood stainer and sealer, it works on damp wood. It is also easy to apply in just 3 simple steps: Clean or Strip, Brighten, and Stain. Its application is easy, and it dries fast. 

#1 Deck Premium Semi-Transparent Wood Stain for Decks, Fences, & Siding - 2.5 Gallon (Light Walnut)
  • PROTECTS AGAINST COLOR FADE AND PREVENTS GRAYING - #1 Deck Protects Wood From Damage Caused By Exposure to the Elements. Can Be Used On Pressure Treated Pine, Cedar, Fir, Redwood, or Most Other Softwoods. Hardwoods Will Require More Frequent Maintenance Coats.
  • BOTH A DECK STAIN & DECK SEALANT IN ONE - #1 Deck Stain Is a Dual-Purpose Stain & Sealer. It Adds Color to Your Wood and Seals it, Preventing Damage Caused by Water Penetration.
  • ALLOWS THE WOOD GRAIN TO SHOW THROUGH - Available in 5 Beautiful, Semi-Transparent Deck Stain Colors That Dry to Flat, Natural Looking Finishes That Will Enhance the Beauty of Your Exterior Wood.
  • BETTER FOR THE PLANET, EASY SOAP & WATER CLEANUP - With Less Than 50 g/L VOC Content, #1 Deck Sealer Is a Better Choice For Our Planet. Clean Up is Super Easy - Just Use Soap and Water.
  • WORKS ON DAMP WOOD, MINIMIZING THE WAIT TIME BETWEEN CLEANING AND STAINING - Once Your Wood Deck Is Visibly Dry, It's Ready to Stain.

Last update on 2021-07-28 / Affiliate links / Images from Amazon Product Advertising API

We recommend that this wood sealer is used on surfaces that have weathered for at least 1 year to allow better penetration of the sealant. Also, if you need to sand the surface, coarse sanding is recommended.

Pros

  • This deck sealer from SaverSystems is easy to clean
  • It is easy to use 
  • It is easy to clean up
  • It works on damp wood
  • This transparent deck sealer has a super-fast dry time.
  • It is waterproof
  • It is odorless.
  • This deck sealer is easy to apply
  • It is water-based
  • The finish looks great on woods
  • It contains super-low VOC per liter

Cons

  • It is not great for new wood surfaces.

3. DEFY Extreme 1 Gallon Semi-Transparent Exterior Wood Stain, Cedar Tone

Special Details: Manufacturer: SaverSystems, Item Model Number: 300158, Item Weight: 8.82 pounds, Product Dimension: 7.25 x 7.25 x 7.75 inches, Size: 1 Gallon, Color: Cedar Tone, Finish: Matte, Material: Water Based

After tons of research, we discovered that DEFY Extreme 1 Gallon Semi-Transparent Exterior Wood Stain is another excellent product for deck sealer for pressure-treated woods. Hence, we have decided to include this sealer among the best deck sealers for pressure-treated wood reviews in 2021.

DEFY Extreme Semi-Transparent Exterior Wood Stain I a super high-quality stain. It is rated one of the best stains for wood, and it is straightforward to apply. This water-based semi-transparent wood stain allows the wood grain to show through the beautiful semi-transparent, natural matte finish.

DEFY Extreme deck sealer is made with quality resists that resist fading and darkening, making your deck stain lasts a season or two longer than other products. DEFY Extreme Exterior Wood Stain is excellent for staining wood decks, outdoor patio, fences, siding, playsets, furniture, and other pressure-treated woods. This sealer features tiny zinc particles in the stain that reflects damaging UV rays, thereby preventing premature graying and color loss.

Furthermore, a deck or wood stained with DEFY Extreme deck stainer is easy to maintain. It does not need sanding or stripping the surface like the #1 Deck Premium Semi-Transparent Wood Stain when it is time for applying a maintenance coat.

DEFY Extreme 1 Gallon Semi-Transparent Exterior Wood Stain, Cedar Tone
  • WATER-BASED SEMI-TRANSPARENT WOOD STAIN – This environmentally friendly, water based deck stain allows the wood grain to show through with a beautiful semi-transparent, natural matte finish. It's great for staining wood decks, fences, siding, playsets, outdoor patio furniture, and more.
  • FORTIFIED WITH ZINC NANO-PARTICLE TECHNOLOGY– It’s like sunscreen for your wood. Tiny zinc particles dispersed throughout the stain reflect damaging UV rays, preventing premature graying and color loss.
  • EXTREMELY DURABLE, QUALITY THAT LASTS – DEFY Extreme wood stains are made with the highest quality resins available that have better resistance to fading and darkening. The result is a quality semi-transparent deck stain that typically lasts a season or two longer than competitive products. Keep your deck, fence or siding looking great for longer by using DEFY premium wood stains.
  • EASY TO MAINTAIN – When it’s time to do a maintenance coat, there’s no need to sand or strip the surface again. Simply brighten the wood with DEFY Wood Brightener and apply a single maintenance coat of DEFY Extreme Wood Stain.
  • 100 VOC COMPLIANT - Ships to all states including California

Last update on 2021-07-30 / Affiliate links / Images from Amazon Product Advertising API

All necessary is brightening the wood with DEFY Wood Brightener and applying one maintenance coat of DEFY Extreme Wood Stain. DEFY Extreme deck sealer is best used on a cloudy day or when it will not receive direct sunlight until it dries for desirable results

Pros

  • This deck sealer is durable
  • It reflects damaging UV rays.
  • This sealer resists fading and graying
  • It is easy to maintain
  • The maintenance coat needs no sanding or striping
  • It is easy to clean with soap and water
  • It is easy to apply

Cons

  • It cannot be applied under direct sunlight.
  • The stain may not last long.

4. Rainguard 1 Gal Homeowner Wet Look High Gloss Masonry & Wood Acrylic Sealer Protects Decks, Porches, Patio’s, Walkway’s, Pavers. For use on all types of Concrete, Brick, Masonry, Wood, and Stone Surfaces.

Special Details:Manufacturer: Rainguard International, Item Model Number: TPC- 0201, Item Weight: 10 pounds, Product Dimension: 4 x 7.5 x 11.5 inches, Size: Gallon, Color: Clear, Colorless, Style: Ready-to-Use, Finish: High Gloss Sheen, Material: Acrylic, Installation Method: Hand Pump Sprayer, Low-Pressure Airless Sprayer, Item Package Quantity: 1

This deck sealer, Rainguard Wet Look Gloss Sealer, is a durable water sealer used on concrete, wood, acrylic, brick. This gloss sealer can be used as a deck sealer for pressure-treated wood, as it protects, seals, and beautifies the surface of your deck. It leaves you with a stunning glossy wet look even after it is completely dried.

Rainguard, 1 Gal Homeowner Gloss Sealer, is a challenging and durable water sealer. When applied to your treated wooden deck, this deck sealer has excellent adhesion on your decks and can resist flaking after many years. It is long-lasting, and I can guarantee its durability for 5 years.

Moreover, it has a non-yellowing effect when dry. With its superior outdoor performance, it is one of the best wood sealants for outdoor woods. It can resist ultraviolent damage when used on outdoor woods. It features a water-repelling ability so that your wood deck does not wear down.

In addition, this deck sealer is 100% eco-friendly. It is a water-based sealant, and it has a low VOC. It has a low odor and, it is safe to apply indoors. You can apply Rainguard 1 deck sealer for treated woods with a hand pump sprayer or low-pressure airless sprayer.

Rainguard 1 Gal Homeowner Wet Look High Gloss Masonry & Wood Acrylic Sealer Protects Decks, Porches, Patio's, Walkway's, Pavers. For use on all all types of Concrete, Brick, Masonry, Wood and Stone Surfaces.
  • Protects, seals and beautifies surfaces with High Gloss, "Wet look" clear acrylic finish
  • Tough, durable, water sealer for concrete, wood, brick resists flaking with excellent adhesion
  • Non-yellowing, resists UV damage for superior outdoor performance
  • Micro-Lok technology provides a breathable, tough, durable, long lasting sealer with a 5 Year Labor and Material Warranty available
  • 100% Eco-Friendly - Water Baed, Low VOC, low odor, safe to use -apply 1 coat with hand or airless sprayer

Last update on 2021-07-28 / Affiliate links / Images from Amazon Product Advertising API

Rainguard 1 Gal Homeowner Wet Look High Gloss Masonry & Wood Acrylic Sealer can be used on porches, patios, decks, walkways, stone pavers, and oil-stained fences, and so much more.

Pros

  • It is easy to apply
  • It is durable
  • This wood deck can be used on all types of concrete, bricks
  • This deck sealer repels water
  • It has a low odor
  • It has low VOC
  • No primer is needed
  • This deck sealer from Rainguard has a non-yellowing effect.
  • It is safe to use

Cons

5. Thompson WatersealTH.042851-16 Semi-Transparent Waterproofing Stain, Woodland Cedar.

Special Details: Manufacturer: Thompsons WaterSeal, Part Number: 042851-16, Item Weight: 5 pounds, Product Dimension: 6.53 x 4.19 x 10.25 Inches, Item Model Number: TH.042851-16, Color: Woodland Cedar

This is another excellent deck sealer for pressure-treated woods that can be used for exterior purposes. It is a complete outdoor wood protector. Thompson Waterseal Semi-transparent Waterproofing Stain is a beautiful blend between paint and a stain. This decker sealer seals and colors well, allowing water that pours or spills on sealed surface beads up rather than absorbed by the wood. This prevents water damage. 

Thompson Waterseal TH.042851-16 Semi-Transparent Waterproofing Stain is also made with advanced polymers that resist fading colors. The sealant also resists mildews and ultraviolet damage to sealed deck surfaces. This stain can last up to 4 years on decks and 4-6 years on fences and siding. 

This semi-transparent deck sealer from Thompson Waterseal, when used as directed, is easy to apply and produces effective results. It is an excellent protection for your decks as the water-resistance holds up well even in a very wet climate. Before application, we recommend decks or woods are washed.

THOMPSONS WATERSEAL TH.042851-16 Semi-Transparent Waterproofing Stain, Woodland Cedar
  • Prevents Water Damage
  • Advanced Polymers Provide Fade Resistant Color
  • Coating Resists Mildew and UV Damage
  • Applies to Freshly Cleaned Damp or Dry Wood
  • Exceeds Industry Standard ASTM D-4446 for Waterproofing Wood

Last update on 2021-07-28 / Affiliate links / Images from Amazon Product Advertising API

You can use Thompson Waterseal TH.042851-16 Semi-Transparent Waterproofing Stain on fences, decks, outdoor furniture, and exterior woods. It is available in 5 different colors you can choose from for your exterior wood projects.

Pros

  • This deck sealer is worth every penny
  • It does not chip
  • It is easy to apply
  • It is easy to clean up
  • It has great coverage
  • This stain dries up quickly
  • It doesn’t require double coating.
  • It is durable

Cons

  • This wood deck sealer can’t be applied using a spray
  • The color may be misleading

Features to look out for in a Deck Sealer before buying the best Deck Sealer for your Pressure Treated woods- Buyer’s Guide

  1. Sealant, Stain, or Both: Deck sealants come as a sealant, stain, or both. A sealant is usually a clear liquid, while a stain usually contains some color. For pressure-treated woods, sealants and stains come as clear liquid, semi-transparent liquid, and solid colors. Your preferences should be determined by the wood material you want to seal.
  2. Strength of Sealer: Sealers have different strengths. Your choice of a deck sealer should be determined by the conditions your wood deck is mainly subjected to daily. Premium versions of sealants are best suited for woods subjected to harsh conditions for maximum protection and durability.
  3. Age of Pressure Treated Woods: Some sealants like #1 Deck Premium Semi-Transparent Wood Stain for Decks, Fences, & Siding work best with an old wood surface to better absorb the sealant. The sealant should be formulated for your type of pressure-treated woods.
  4. Ease of application: The best sealant should be easy to apply and clean up. Some may require a roller, a paintbrush, while others may be compatible with a hand pump sprayer or low-pressure airless sprayer.

A water-based sealer is easier to clean than an oil-based sealer.

  1. Water Resistance: The best deck sealer should have the ability to resist water or moisture as water is the most critical enemy of woods. When water comes in contact with the wood surfaces with the best sealant, it will make water bead up, preventing absorption.
  2. Eco-friendly: A biodegradable wood deck sealer is a better option than a non-biodegradable sealant. When using a non-biodegradable sealant on exterior deck surfaces, a drop cloth can be used to cover nearby vegetation.
  3. Low or no VOCs: Pressure-treated woods are already embedded with chemicals. Choosing a low or no VOCs sealant is a great choice, especially for extensive pressure-treated woods. This is to prevent you from inhaling toxic fumes.
  4. Fast Drying Time: A fast-drying sealer should be chosen over a slow-drying sealer. A fast-drying sealer allows you to coat as many times as you want, quickly preventing you from inhaling harmful VOC fumes. It is also great in cases of unpredictable weather conditions over the next few days.

Final Verdict – Best Deck Sealer for Pressure Treated Wood

Ready Seal 505 deck sealer is the top best decker for pressure-treated wood in this 2021 review. It is an excellent product with great coverage. However, a bit expensive, this deck sealer is just great for your pressure-treated woods because it goes on quickly and dries evenly without leaving any runs or spots to show. It is easy to apply, and you would be happy with whatever color you choose. This deck sealer would exceed your expectation. 

The only con we have about this product is that it may fade off and because the stain is transparent, any mold, blemish, or discoloration will show through it. Also, of the 5 deck sealers for pressure-treated woods reviewed here, it is the most expensive, but you would be a customer for life if you try this once.

#1 Deck Premium Semi-Transparent Wood Stain for Decks, Fences, & Siding – 2.5 Gallon (Dark Walnut) is our second best deck sealer for pressure-treated woods. Do you have a 20-year-old cedar deck, or do you not feel like replacing any boards? This excellent water-based deck sealer will work great on your old deck with splinters and raised boards. Being water-based, it is effortless to apply on a deck with a roller or stain stick. You would like this stain and even buy more. 

However, this deck sealer is best used on surfaces that have been weathered for at least 1 year to allow more penetration. #1 Deck Premium Semi-Transparent Wood Stain for Decks, Fences, & Siding is beautiful and easy. No regrets whatsoever!

Based on use and research like the other products, we have ranked DEFY Extreme 1 Gallon Semi-Transparent Exterior Wood Stain as the third position in the best deck sealer for pressure treated wood reviews in 2021.

DEFY Extreme deck sealer allows rainwater to bead up like no other product. This product holds up very much better. It does not peel, and fading is very minimal. However, areas most exposed to sunlight may no longer bead water after about six months. Defying all this, this DEFY Extreme deck sealer is a great product; you would say goodbye to oil-based stains!

We rank Rainguard 1 Gal Homeowner Wet Look High Gloss Masonry & Wood Acrylic Sealer as the fourth-best deck sealer for pressure-treated woods. This deck sealer is budget-friendly and, at the same time, of good quality.

It is easy to apply and can be used on all types of concrete, brick, masonry, wood, and stone Surface to protect decks, porches, patios, walkways, pavers, etc. The only drawback we have with this product is that it isn’t glossy as advertised. For use on 

Thompson Waterseal TH.042851-16 Semi-Transparent Waterproofing Stain is the last pick for this best decker review. This sealer has excellent coverage and may not even require a second coat. One coat is all you need, and it is super easy to apply. It is a tremendous one-season waterproofing deck sealer for pressure-treated woods. Hence, it requires a yearly renewal application.

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