TWP 100 Deck Stain Review: Is It Worth It? (Pros & Cons)

TWP 100 Series is a semi-transparent, oil-based wood stain designed for exterior wood such as decks, fences, siding and other outdoor wood surfaces. It penetrates the wood rather than forming a thick surface film. The manufacturer lists 100–200 square feet of coverage per gallon, a wet-on-wet two-coat application for most applications, and an application temperature range of 45°F to 95°F.

The biggest strengths of TWP 100 are its penetrating formula, natural-looking finish, water resistance and relatively simple maintenance. The biggest limitation is availability: its VOC formulation is not compliant in every U.S. state.

Quick verdict: TWP 100 is worth considering if you want an oil-based, semi-transparent stain that keeps more of the natural appearance of the wood. It makes the most sense when the deck has been properly prepared and you are comfortable with periodic cleaning and recoating.

TWP 100 is a strong option for homeowners who want a penetrating oil-based deck stain rather than a film-forming coating.

It is particularly interesting for homeowners working with natural wood decking such as cedar, redwood and pressure-treated lumber.

However, the result depends heavily on preparation and application. TWP itself warns that the final color can vary depending on wood species, age, preparation and application.

It is also important to check whether TWP 100 is permitted where you live because its VOC level means it is not compliant in every state.

If you are still deciding which wood is right for your deck, our guide to the best woods for decks is a useful place to start.

Products Offered by the Brand

TWP offers several exterior wood stain series, and the 100 Series is only one of them.

The main TWP products relevant to exterior wood include:

• TWP 100 Series – oil-based, semi-transparent stain for exterior wood.
• TWP 1500 Series – lower-VOC oil-based alternative designed for broader availability.
• TWP 200 Series – intended primarily for siding, shakes and shingles.
• TWP Semi-Solid Pro Series – provides more pigment and stronger color coverage.

For a deck, the 100 and 1500 Series are the most directly comparable products.

The TWP 100 Series is sold in 1-gallon and 5-gallon sizes.

TWP 100 is Oil-Based or Water-Based ?

TWP 100 is oil-based.

The manufacturer describes it as a semi-transparent oil-based stain. TWP also states that its 100, 1500 and 200 Series products are oil-based.

This is important because oil-based penetrating stains behave differently from many water-based or film-forming products.

Instead of creating a thick coating over the surface, TWP is designed to penetrate the wood.

That can be useful on decks where you want the natural grain to remain visible.

If you are comparing different finish types, our guide to the best deck stains explains some of the other options available.

Transparency and Available Colors

TWP 100 is a semi-transparent stain.

That means the natural wood grain remains visible while the stain adds color and protection.

The currently listed TWP 100 colors include:

• Clear
• Cedartone
• Redwood
• Dark Oak
• Cape Cod Gray
• Prairie Gray
• Honeytone
• Rustic
• Pecan

Color names can be misleading when comparing stain samples online.

The manufacturer specifically warns that the final appearance depends on the wood species, age, preparation and application.

For that reason, a sample test is a better way to judge the final color than relying only on a color chart.

One important point is the Clear option. TWP states that clear does not provide the same UV protection against graying as a tinted stain.

If maintaining the original color of the wood is important, a pigmented color is generally the more appropriate choice.

You can also compare different appearance options in our guide to the best deck colors for hot climates.

Recommended Wood Types

TWP 100 is marketed for a broad range of exterior wood.

The manufacturer lists uses including:

• Wood decking
• Wood fencing
• Wood siding
• Hardwood
• Porches
• Other exterior wood surfaces

It can therefore be considered for common deck woods such as:

• Cedar
• Redwood
• Pressure-treated pine
• Other suitable exterior softwoods
• Some hardwood decking

However, not every wood species absorbs stain in exactly the same way.

Dense hardwoods can behave very differently from softer woods.

For example, homeowners considering Ipe should first understand its characteristics. Our Ipe deck guide explains more about this dense hardwood.

We also cover Cumaru wood decking and Garapa decking if you are comparing tropical hardwood options.

Surface-Preparation Requirements

This is one of the most important parts of using TWP 100.

A good stain cannot compensate for poorly prepared wood.

TWP’s preparation guidance calls for the surface to be clean and able to absorb the stain.

For previously stained decks, the existing finish may need to be removed if it interferes with penetration.

For older wood, cleaning and brightening can help remove dirt, weathered surface fibers and other contaminants.

New wood also needs special attention. The manufacturer’s current guidance recommends allowing new pressure-treated wood to weather before staining, while the exact preparation can depend on the type and condition of the lumber.

The basic process is:

1. Remove dirt and contaminants.
2. Remove incompatible old finishes when necessary.
3. Clean the wood.
4. Brighten the surface when appropriate.
5. Allow the wood to dry properly.
6. Apply the stain according to the product instructions.

For more information, see our complete wood deck maintenance guide.

You can also see our guide to the best deck cleaners before starting the preparation process.

Coverage Per Gallon

TWP’s product information lists approximately 100–200 square feet per gallon.

Actual coverage can vary significantly.

Older, rougher and more absorbent wood may require considerably more stain than smooth, dense wood.

TWP’s additional guidance gives a more detailed estimate of roughly:

• 150–200 sq. ft. per gallon for the first coat
• 200–300 sq. ft. per gallon for the second coat
• Approximately 100–125 sq. ft. per gallon for two coats

Because deck conditions vary, it is safer to calculate your project using the lower end of the expected coverage rather than assuming one gallon will always cover 200 square feet.

Our free deck stain calculator can help you estimate how much stain your project may require.

Number of Coats

For the standard TWP 100 application, the manufacturer specifies two coats applied wet-on-wet.

The second coat is not intended to be applied after the first coat has completely dried.

Instead, the second application is made while the first coat is still receptive to additional stain.

This is important because simply applying two heavy coats at separate times can lead to over-application.

Sanded wood can be a special case. TWP guidance indicates that certain freshly sanded surfaces may require only one coat because sanding can change how the wood absorbs the stain.

Always follow the instructions for your particular wood and preparation condition.

Application Conditions

TWP lists an application temperature range of approximately 45°F to 95°F.

Weather conditions matter just as much as temperature.

Avoid staining when rain is expected soon after application.

TWP’s current guidance recommends not applying the product when rain is expected within 48 hours.

Direct sunlight and excessive heat can also make application more difficult because the stain may dry or absorb unevenly.

A practical approach is to choose a period with:

• Moderate temperatures
• Dry weather
• No expected rain
• No extremely hot surface temperatures
• Enough time for the stain to dry properly

Do not assume that a warm day automatically means it is a good staining day.

Drying and Curing Time

TWP lists a general dry time of 4–24 hours, but actual drying can vary with weather, humidity, wood condition and how much product was applied.

Over-application is particularly important.

If excess stain remains on the surface instead of penetrating the wood, drying and curing can take longer.

TWP’s guidance recommends allowing the stain to penetrate and then wiping or back-brushing excess product that has not absorbed.

The surface should dry without glossy areas.

Glossy or sticky areas can indicate that too much stain was applied.

The deck should also be allowed to fully cure before putting furniture, grills or other items back onto the surface.

UV and Water Protection

TWP 100 is designed to provide both water resistance and protection against weathering.

The manufacturer says the product helps resist water absorption and protects against problems associated with moisture, including warping, cracking and splitting.

The pigmented colors also help reduce UV-related graying.

However, there is an important distinction between water protection and making wood completely waterproof.

A penetrating deck stain is not a permanent waterproof barrier.

The wood will still experience normal outdoor exposure.

Likewise, the Clear version does not provide the same protection against UV graying as pigmented colors.

For homeowners trying to keep a wood deck looking good for many years, stain should be considered part of a larger maintenance routine rather than a one-time solution.

Peeling, Fading and Maintenance

One advantage of TWP 100 is that it is a penetrating stain rather than a thick film-forming coating.

That means it is less prone to the classic peeling and flaking associated with some film-forming finishes.

This does not mean the color will never fade.

Deck floors receive considerable foot traffic, sunlight and weather exposure, so horizontal boards normally wear faster than vertical railings.

TWP states that a typical deck may need attention approximately every 2–3 years, depending on wood type, exposure and application.

This makes maintenance an important part of the ownership cost.

If your deck already has peeling, severe weathering or damaged boards, staining alone may not solve the underlying problem.

Before refinishing an older deck, read Is My Deck Rotting or Weathered?.

If there is actual deterioration, our guide to deck repair vs. replacement can help you decide what should happen next.

Recoating Requirements

TWP recommends cleaning and recoating as needed, commonly around every 2–3 years for deck surfaces.

The exact interval can be shorter or longer depending on:

• Wood species
• Sun exposure
• Foot traffic
• Climate
• Previous preparation
• Amount of stain applied
• Whether the surface is horizontal or vertical

Do not simply add another heavy coat because the color looks slightly faded.

The deck should be evaluated and properly prepared before recoating.

If you are changing from TWP to another brand, additional preparation may be necessary. Residual stain can affect how another product penetrates and performs.

Price and Availability

TWP 100 pricing varies according to the color and container size.

The product is generally available in 1-gallon and 5-gallon containers through TWP’s online store and selected retailers.

The bigger availability issue is VOC compliance.

TWP states that the 100 Series is not compliant in every U.S. state. The company’s 1500 Series is offered as the lower-VOC alternative with broader availability.

That means homeowners should check local availability and applicable VOC rules before choosing TWP 100.

Advantages and Disadvantages

TWP 100 Pros

• Oil-based penetrating formula
• Semi-transparent appearance
• Keeps natural wood grain visible
• Good water-shedding properties
• Helps protect against UV-related graying when using a pigmented color
• Suitable for many exterior wood species
• Less prone to peeling than film-forming finishes
• Available in several natural-looking colors
• Maintenance coats are relatively straightforward when the existing finish is compatible

TWP 100 Cons

• Not compliant in every U.S. state
• Requires careful surface preparation
• Color can vary considerably between wood species
• Clear does not provide the same UV protection as pigmented colors
• Over-application can create slow-drying or glossy areas
• Horizontal deck surfaces wear faster than vertical surfaces
• Requires periodic maintenance
• Oil-based application requires appropriate cleanup

TWP 100 vs Other Deck Stains

TWP 100 is not automatically the best stain for every deck.

The better choice depends on what you value most.

Choose TWP 100 if:

• You prefer an oil-based penetrating stain.
• You want a semi-transparent appearance.
• You want to retain visible wood grain.
• Your local regulations allow the product.
• You are willing to clean and recoat the deck periodically.

Consider another product if:

• TWP 100 is not available in your location.
• You want a lower-VOC alternative.
• You want heavier color coverage.
• You prefer a water-based system.
• Your deck has an existing coating that is difficult to remove.

For comparison, we have already reviewed several popular products, including Behr Deck Stain, Sherwin-Williams SuperDeck, Thompson’s WaterSeal, Sikkens Cetol, DEFY Deck Stain and Ready Seal.

Our Cabot vs Ready Seal vs DEFY comparison is particularly useful if you want to compare several products before buying.

Best Alternatives to TWP 100

TWP 1500 Series

The most obvious alternative is TWP 1500.

It is also oil-based and designed for exterior wood, but it uses a lower-VOC formulation with broader state availability.

If TWP 100 is unavailable where you live, the 1500 Series is the first product I would investigate.

Related article: TWP 1500 Deck Stain Review: Pros, Cons and Results

Ready Seal

Ready Seal is another penetrating oil-based wood stain that is popular for decks and other exterior wood.

It is worth comparing if you want a simple application system and a wide range of color choices.

See our Ready Seal review for a closer look.

DEFY

DEFY offers water-based deck-stain options and can be worth considering if you specifically prefer a water-based product.

Our DEFY deck stain review covers the product in more detail.

Behr Deck Stain

Behr offers several deck and exterior wood coatings with different levels of color and protection.

It may make more sense for homeowners looking for a different appearance or coating approach.

See our Behr deck stain review for more information.

How TWP 100 Fits Into a Complete Deck Maintenance Plan

A deck stain is only one part of keeping a wood deck in good condition.

Before staining, check the boards for:

• Rot
• Cracks
• Splits
• Loose fasteners
• Structural problems
• Excessive surface weathering
• Previous coatings

Cleaning should also be part of regular maintenance.

If the deck is structurally sound but weathered, cleaning and refinishing may be enough.

If boards or structural components are deteriorated, repair should come before cosmetic finishing.

Our wood deck maintenance guide provides a broader maintenance routine, while our wood deck guide covers deck materials, planning and other important considerations.

Research-Based Final Verdict

TWP 100 is a strong choice for homeowners looking for a semi-transparent, oil-based penetrating deck stain.

Its main appeal is the combination of visible wood grain, water-shedding properties and a finish that is less prone to the peeling associated with some film-forming coatings.

The product also offers a useful range of natural-looking colors.

But TWP 100 is not a maintenance-free solution.

Preparation is critical. Wood condition affects absorption. Color can vary significantly from one species to another. Horizontal deck surfaces will normally require more maintenance than vertical surfaces. And the product’s VOC restrictions mean it is not suitable or available everywhere.

For me, the biggest deciding factor would be the condition and species of the deck.

If you have a properly prepared cedar, redwood or pressure-treated deck and want a natural-looking penetrating oil finish, TWP 100 deserves to be on the shortlist.

If TWP 100 is not available in your state, the TWP 1500 Series is the more practical alternative to investigate.

As always, check the latest manufacturer instructions and your local requirements before applying any deck finish.

Review basis: This review is research-based and draws on manufacturer product information, technical documentation, application guidance and available independent information. We have not personally tested TWP 100 on a deck, so the review should not be interpreted as a hands-on test.

Sources and Further Reading

TWP 100 Pro Series — Official Product Information

TWP 100 Series 1 Gallon — Official Product Details

TWP 100 Series Product Data Sheet

TWP Stain Colors — Official

TWP VOC States — Official Information

TWP Stain Comparison — Official