Need Some Help With TWP Stains?

by TWP Wood Stain Help

We are here to help you with your TWP exterior deck or wood restoration project!

Key TWP Stain Tips
  • TWP is an EPA-registered wood preservative offering exceptional protection for exterior wood surfaces, with performance varying by several factors.
  • Proper preparation and application are key to maximizing durability and beauty when using TWP 100, 1500, or 200 Series.
  • When seeking help, specify your wood structure type, such as a deck, wood siding, or fence.
  • Provide the wood species, such as Treated Pine, Cedar, or Redwood, and whether it is new or older than one year.
  • Disclose any previous stain brands and types used, such as solid or semi-transparent stains, for tailored application advice.

TWP is a cutting-edge wood preservative and protectant registered by the EPA, designed to provide exceptional protection for exterior wood surfaces. However, its performance and longevity can vary based on several factors, including the type and age of the wood, how well it is prepared, and the application technique used.

To ensure the best possible results with TWP 100, 1500, or 200 Series, proper preparation and application are key. Follow recommended guidelines to maximize the durability and beauty of your wood surface, no matter which TWP series you choose.

TWP Stain Tips and Help

When asking questions please give us some information about your wood restoration project:

  • What structure is your wood? Examples would be: Deck, Wood Siding, Fence, etc
  • What species is the wood? Examples: Treated Pine, Cedar, Redwood, Ipe, etc
  • Is the wood new or older than 1 year?
  • Has the wood been stained previously with a different brand? Please specify brand name and type of stain used: Examples: Solid stain, Semi-Transparent Stain, etc.
  • Any additional info that would be useful

Once you supply us with the information, we will able to give you advice as to how to prep your wood and any needed instructions for the TWP application.

Please ask your questions in the comment area.

Thanks

TWP Stain Help Staff

 
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TWP Wood Stain Help
Written by Scott Paul I have been restoring exterior wood since 1993 and have used TWP on more decks than I can count, in Michigan weather that punishes a finish. The instructions and answers on this site come out of that fieldwork rather than off a product sheet. TWPStainHelp.com is operated by OPW LLC, the largest online dealer of TWP stains in the country.

Related TWP Stain Help Tips

 
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Charlie
2 hours ago

Humidity is staying at 50% or above for the next few days, including up to 95% at night. Is it ok to apply on new, properly aged PT pine wood (over 8 months) under these conditions?

Amee Norris
14 hours ago

I am currently restoring old oak church pews for a wedding venue in northwest iowa. They will be outdoors. I have sanded them down to 80 grit. What do you recommend doing next? We just ordered 1500 dark oak.

Amee Norris
4 hours ago

Would you recommend sanding with 120 and then washing or is 80 ok?

We are on a time crunch. Would any deck brightener/wash work?

Amee Norris
3 hours ago

Just to clarify…only 1 coat? Reading through the recommended application it said 2 coats wet on wet.

Amee Norris
49 minutes ago
Reply to  Amee Norris

The pews have been sitting outside all summer. Still suggest 1 coat?

Charlie
18 hours ago

Also in Atlanta, but my new pressure treated pine deck is completely north facing and only gets full sun in summer, so the deck boards closest to the home really don’t get any sun due to overhang. Deck was installed mid January, also with cracking in the wood.

Should contractor to put the TWP 100 down now or am I safer doing in the spring.? The Deck and railing were all cleaned/brightener 4 days ago Friday. Still seeing some green on closer deck boards. They seem to think it’s fine to do now, but I am concerned with moisture being high on my pin free meter.

Charlie
17 hours ago

So, to clarify, my pin free moisture meter readings are between 20% and 15% on this almost 9 month old pressure treated pine deck. You are saying this will be ok to stain now?

 
Jim Pav
21 hours ago

Advice please with recomended wait time for TWP100 application. New pressure treated pine deck constructed end of June, 3 months.
Home is in Atlanta and deck is under direct intense sun all day. Some of the wood is already beginning to crack, fast drying. A few boards still pooling rainwater. If we wait until end of October for min 4 months, overnight temps start to fall below 50. Our reguon may expeirence more ice/snow this winter. Stain now or wait till Spring is my dilemma. Thank you.

Brad
2 days ago

I have a cedar swing set the has twp semi solid stain on it. It’s been about 2 years since it’s been stained and is due for an update. Can I just clean it and apply over the top of it? What do you recommend

Mavis L Forsey
3 days ago

Stripped my cedar deck, it’s early fall now. Humidity running 60 ish percent this time of year. Temps around 50 to 70 degrees, lower at night. Should I wait until spring to use restore a deck, let it dry then stain with twp 1520 or can I use restore a deck and let it dry for a few days then stain it?

 
Reed
3 days ago

Can the 1500 stain be used with a pump sprayer, & does it need to be diluted .

Dorian Miller
3 days ago

I have a fully exposed deck needing a re-coat. Used TWP cedartone 4 years ago. Please tell me the process for proper prepping and application.

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Mike Minor
4 days ago

We want to stain our first generation Trex deck, and were told by the Trex company that it is ok to stain. Which of your products would you recommend and do you have any tips?

 
David Latch
6 days ago

I have a 5 gallon can of 1500 I bought in May 2025. It’s never been opened and has been stored in a cool, climate controlled basement. I won’t be able to stain my deck until Jul-Aug 2027 time frame. Can I use what I have or should I purchase a new can?

David Latch
6 days ago

Will it “last” for at least 2 years after application?

Jeff Bellelo
7 days ago

I am building carport louvers made with 1×6” western red cedar boards, each 10’ long. Will be utilizing the 1500 product to stain/seal. These boards are surfaced on one side, and long edges. The other side rough. How do I apply 1500 product to these boards, brush, roller, by hand with rag?

Julie
7 days ago

I’m having a hard time deciding on TWP Cedartone or Pecan on our log home. Help!
Here’s a pic of Cedartone we just had stripped. I’m liking the idea of not such an orange tone with Pecan, but will Pecan be even darker? What’s your recommendation? Thank you!

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S Gilbert
12 days ago

HI, 2 years ago I used TWP stain with great results on an old deck I completely stripped and prepped. The stain TWP-77 250 VOC Pro Series. You tinted it for me. When I searched for same, the result were not found. What stain now is best to re-dress the horizontal boards? Deck still looks good, but some weathering is becoming apparent. And I have about 1/2 gallon still of the original; would it be okay to mix that well and simply use that? I know I’ll have to clean and use wood conditioner. Thanks.

Dan McCoin
12 days ago

Is TWP 315 light cedar still available

Amy Williams
14 days ago

We have a new dock (treated pine) and need to seal it. We do not want to change the natural color. Which of your products do you recommend? Are there any additional steps we should follow? We are in Georgia. Thank you

 
Jewel Howard
14 days ago

I LIVE IN Marietta, GA and I will be needing you to recommend a TWP semi-transparent stain to be applied to a new cedar wood fence. I want to go with a neutral color, where you can see the grain of the wood. What do you recommend. Your assistance is greatly appreciated. Thank you, Jewel Howard.

Katherine Stapp
14 days ago

Hi, I’m using the 1500 series (dark oak). Love the stain, but the guys who stripped the old paint off left sanding swirls that are now visible. They put on one coat of TWP; how long do I need to wait to do a second light sanding to get the swirls out and then restain? It’s old wood (a covered porch), I’m guessing treated pine. Thanks for the advice!

Katherine Stapp
14 days ago

ok, thank you!

Chuck Williams
16 days ago

Hello, my situation is 240sf 10 year old wood 2x6x8 ft. planks, 12’x20′. (Indoor/outdoor) room. Meaning I have six windows spanning 20′ that are open 90% of the time in Coastal Florida. The floor gets about an hour of morning sun if it’s out, some small puddles when the rain comes in a certain way, but the main concern is the continuous high humidity rates for 8 months straight. i want to use TWP 1500 series. What can I expect or results can I expect with the wood being 10 years old, but still very good shape no warping. Will it need more or less 1500 series stain. I’m going to be doing this project in the wintertime. 50-70 degrees and low humidity. Thank you so much for any help.

 
Debbie Smith
19 days ago

I have completely sanded the deck, which is about 10 years old, down to the wood. The top rail has white spots around knots (the knots are visible but not evident by touch. I applied 2 coats, wet on wet about 8 weeks ago. Can I put more product on now? I don’t feel it has the protection it needs.

Jason
20 days ago

Is TWP 200 Series best for cedar shake roof in CA? Should I allow roof to dry before applying stain?

 
Richard Baker
20 days ago

I need to know if 1 order 14 gallons of the redwood oil base stain if its free shipping

Michael Indiano
21 days ago

I have a 2 year old pine privacy fence that has never been treated. Using the 1530 series Natural stain, I want to apply with sprayer and brush. Do I need 2 coats and when is second coat applied? The fence has been cleaned

Jim
22 days ago

I have spent 8 hours cleaning, pressure washing and birghtening all rails and the deck itself. Now it looks like a potential of rain for at least the next two weeks. I know you recommend staining withing two weeks of cleaning. If I can’t quite make that window, what do i need to do iif it has been three weeks or a month since cleaning? I’m using the 100 series.

Last edited 22 days ago by Jim
jim
21 days ago

Perfect, Thanks.

 
Kurt
22 days ago

I have a cedar sided house, and in the past I’ve used an oil based semi transparent stain. This stain darkens considerably within a year or two. I don’t like the darkening. What can I do to keep the color the same over the years? Would a semi solid oil based stain darken less? thank you

Kurt
21 days ago

Thank you for the quick response!

Ian
23 days ago

On your 5 gallon twp metal lids, is there a PREFERRED way to pour\transfer it to a 2 gallon pump sprayer..not sure if i should just ladle it in, siphon, or buy. A 5 gallon spout top (if so..what fits)…
thanks

Alicia Ashton
23 days ago

Hello and thank you for offering a help section! We are stuck! We are trying to restore an old set of stairs on the exterior of a building. The stairs are not high traffic at all and just a 2nd emergency exit for 2nd floor apartment. They were installed over 15-20 years ago and painted with exterior paint at least twice. It is pressure treated wood. We have used a grinder and sanded almost all traces of paint off and down to bare wood, other than in tight corners and grooves where wood has expanded and paint is still stuck. We would like to get another 10 years out of the stairs before fully replacing it due to some rotting wood. I originally wanted a semi transparent stain for penetration benefits and no peeling and flaking, along with quicker reapplication next time. I am concerned with wood being older and previously painted, the wood may not absorb the stain well. Are my only options semi-solid stains or would the semi-transparent be suffice? I do not want paint again, and also trying to avoid peeling and flaking.

Alicia Ashton
23 days ago

Which product will penetrate the best to the old wood for protection from Buffalo climate and not peel or flake down the road???

Alicia Ashton
7 days ago

Hello again!
I have another project starting and seeking clarification please. Same area, Buffalo NY and this time installing a new cedar fence. We would like a semi transparent oil based stain and something to possibly keep the tone of the cedar/wood lighter in color but have UV protectant. I’m limited again to 1500 series, but I assume these color samples are shown on a different type of wood than cedar? Do you have pictures of them on cedar and which would be the lightest color on cedar with UV?

Alicia Ashton
7 days ago

Thank you very much for the help!

Alicia Ashton
1 day ago

Hello again!

Even if cedar wood is brand new, rough sawn, no stain yet…. do I need to use the Gemini step?

 
Ron
24 days ago

I have a 17 year old cedar deck that is @530 sq ft. with railings on two sides. It was power washed and stained with Olympic semi,+transparent stain two years ago. I started to sand it down. I’m planning on going with the twp1501, cedar semi-transparent stain.y questions are:
1. How much stain do I need?
2. Can I just continue to sand it down,or do I need to get the stain stripper?
3. Do I need to get the stain stripper booster?
4. Do I use a brighter before or after I sand it?
Thanks, Ron

Louis
26 days ago

Does TWP 1500 have sun inhibitors like aluminum oxide or UV protection?

Julie
26 days ago

Will be stripping and restaining our log home/decks this month. Currently home has TWP100 Series Cedartone. Love that color/natural looking matte cover. Our current log person recommends Series 200 stain because it’s a heavier/longer lasting stain and he uses that more than the 100 Series on log homes. (We live among trees, so we’re more concerned about mildew than UV protection.)
I’m also wondering if the Series 200 will look thick/shiny on logs rather than have a more natural appearance as the 100 does.
Also not sure if 100 or 200 better for decks. We plan to use same stain for our home and decks.
One more thing, do either of these soak more into wood than the other for better protection or is penetration same for both?
Thank you for your input!

 
Mike
27 days ago

What is the approximate coverage per gallon for the 1500 series? Two year old pressure treated pine deck. Never had any stain or coating applied.

Dennis Stumpf
28 days ago

What stain in the 100 series would I use to maintain yellow cedar look?

Walt
29 days ago

I have a two-story deck that was stained by the previous homeowner using Cabot semi-transparent, the last time 3 1/2 years ago. It is badly weathered, north-facing, in northern Indiana with hot humid summers and very cold wet winters. I plan to use the TWP semi-solid to try to cover the badly weathered wood. I’m not sure how to approach preparation. It seems like I have extremes from badly weathered to heavier application. I’m also seeing green mildew. Which prep products should I use? Is sanding discouraged because I have some pretty rough spots- so if I need to sand, when do I do that and how? How do I deal with the underside? Appreciate the help.

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Walt
29 days ago

Great. On the underside, it has been stained previously. Since it has to breath, do I strip and brighten and stop there or just let it be as-is? Thanks again.

Walt
29 days ago

Couple of other questions. You recommend applying the brightener immediately after stripping while wood is still wet. However, if I need to sand, wouldn’t I need to let the wood dry to sand? Do I brighten the dry wood after sanding? Also, how should I remove the sanding dust? Thanks again.

Walt
8 days ago

I finally had a nice day to try and strip the deck. I used the Restore A Deck stripper, booster, and thickening gel. Looking at the results, it seems the previous owner either painted over or really over-applied the stain. I sprayed stripper mix, let it sit for 30-40 mins, scrubbed, and then power washed. I skipped the brightener step since the old was still there. What’s next? Do I need something stronger? Do I still need to use brightener before doing anything else?

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Mary Kiernan
1 month ago

Sanded and stained cabin with TWP100 8 years ago. We Reapply every 2 to 3 years. Cabin is in Wyoming, 8000 feet, full sun and wind. Ready to re-stain west side. This is what it looks like, after cleaning. My husband thinks we need to re-sand. The stain on here is TWP 100. Can we reapply or do we need to resand?

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Sheila
1 month ago

Installing a cypress T&G exterior soffit and interior ceiling in coastal GA. We’d like to maintain the warm color of the wood over time. What TWP product do you recommend and should we stain all sides prior to installation?

Sheila
1 month ago

Thank you!

Lindsay O'Keefe
1 month ago

Pressure treated pine deck and stairs installed 16 years ago. Deck is in forested shade in temperate rain forest of North Carolina: 40-60″ rain/yr. I’ve used boracare as a preservative in recent past. 1. Can I use TWP 1500 clear in this situation. 2. The wood never truly dries out, will the stain go into the wood?

 
Jinny Moorehead
1 month ago

I stained my pine siding with 101 TWP stain 6 years ago. It now needs maintenance. The stain penatrates differently on different places. Some places stain darker than others. Would Gemini Restore Kit sove my problem?

Mark Evans
1 month ago

I am looking at the TWP 100 semi transparent stain for my 1 year old cedar fence. Will a regular pump up sprayer work or do I need a different applicator?

Marty
1 month ago

I’m staining Doug fir glulam beams and new pine soffit with twp semi solid stain. Do I need to use the cleaner and conditioner prior to applying the stain?

 
Edgar
1 month ago

I just installed a new cedar shake roof. Can I stain it right away or do I have to wait 4-12 months. Also what twp product would you recommend? I wanted a dark brown stain if possible. Thank you in advance for any help that you can provide.

Hope Wagner
1 month ago

My deck is 10 months old and is pine should I stain in the fall or wait until spring? We usually have asian beetles in September and October so I was worried about them getting in the stain as it cured.

Jim
1 month ago

I used TWP100 on my deck about 5 years ago and at that time I used the RAD stripper and brightener. I ordered my new batch of stain today with the cleaner and brightener. I think I have some of the stripper and brightener left from the previous application. Can I go ahead and use that to get a jump on the cleaning process? I don’t feel like it is really necessary to use the stripper this time but I don’t really know the difference between the RAD stripper and the RAD cleaner.

 
Tim
1 month ago

I have a new porch build and while I let the pressure treated wood dry/weather, I am looking at stains. The poles are pressure treated southern pine and the rest of the frame is just southern pine boards. I am not wanting a orange finish and also nervous to go dark because of the dirty/splotchy looking finish on pine.
My question is, can you mix something with a grey tone to wash out the yellow but then add a little warmth with a pecan or cedartone? Thoughts on best way to finish this type of wood to get a semi even tone without looking like a solid paint?

Tim
28 days ago

Thanks for the reply. If you don’t mind, I ran some tests on test boards then went to the real 6×6 pole to test. Not loving the results except for 2 indoor stains. My question is, based on the image, do you have any recommendations on how to achieve the Special Walnut look, or possibly a little lighter? Here is an image:

  1. Top stain – 2:1 semi-trans dark mulch (2) and acorn (1) – too grey/muddy
  2. 2nd from top – Acorn (out)
  3. 3rd from top – 4:1 semi-trans dark mulch (4) and acorn (1) – 👍 this one is ok out of the outdoor stains
  4. 4th from top – semi-trans dark mulch – too orange
  5. 5th from top – pre-stain alone on half, then pre-stain and Special Oak (indoor) on half – 👌 This is my favorite
  6. Bottom large stain patch – Special Oak only. I like this but may be slighyl dark, if i could lighten. – ✌ this is my second favorite.

Before ordering a TWO product, do you have a suggestion of some of your colors that are outdoor and could achieve something closer to the special oak?
Any thoughts on what you think would be best on a large scale? Hard for me to get a good idea from such small text areas. Attached is also an image of the posts and face frame I will be staining. It is a fairly new build (6mo). It is dry, treated SYP that has been sanded. Inside is getting a ceiling and no stain.

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Michelle hammer
1 month ago

The house washers cleaned my 7 yrs old deck with sodium hypochlorite . They did not do under the rails and a couple other areas so there is still some (failing) finish in parts. We originally treated the deck with TWP 1516 rustic oak. I read that I need to apply oxalic acid to neutralize the sodium hypochlorite and then sand the deck then finish. What are the correct steps and is there a way to fix the damage without sanding ? If I have to sand do I have to do anything else before applying the TWP rustic oak ?

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Debbie Smith
1 month ago

I had a person come in and stain a pergola with the 1500 series. He missed some places and I suspect didn’t keep it stirred. If I want to stain it again, how long do I have to wait?

 
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