TWP 1500 Stain
First, measure your wood surface to determine the square footage. TWP 1500 Series Wood and Deck Preservative covers approximately 150-300 sq. ft. per gallon. Buy a little more stain than you need just to be sure you do not run out at the end of the project.
Prior to using TWP 1500 Deck Stain, clean the wood using a brush or pressure washer along with a quality wood cleaner. Preparing the wood properly will ensure your new TWP Wood Stain will perform optimally.
Once the wood surface is cleaned it must dry for a minimum of 48 hours before ant stain can be applied. Be sure the temperature is at least 50 degrees and that dry weather is forecasted for the next several days.
Remove any leaves or debris that may have collected while the wood was drying. Wear protective gear like rubber gloves and safety glasses while completing your wood staining project. Thoroughly mix the TWP 1500 Wood Preservative using a paint stick until it is well blended. Be sure there are no clumps at the bottom of the pail. If the TWP stain has been sitting for some time, a paint store can shake it up for you.
Use plastic to protect any windows, landscaping, concrete, or siding that you do not want to stain. Begin staining the higher areas first. On wood siding, gazebos, wood shakes, and play sets start at the top and stain your way down. On wood decks, it is best to start with the railings and save the deck floor for last.
TWP 1500 Series can be applied several ways. Use a brush, stain pad, or pump sprayer to apply. With TWP 1500, the first coat is a saturation coat. It should soak in fairly quickly with the exception of new wood which may take longer. If the wood absorbs the first coat with no problem, a second coat of TWP 1500 Stain may be applied. The more stain that is absorbed the better. Apply a second "wet on wet" coat within 30 minutes of the first coat.
Be wary of over application of the stain. If you see puddles or drips of excess stain that isn't absorbing into the wood, wipe them away using a brush or stain rag. Do not stop staining in the middle of a board. Doing so can leave lap marks. Finish each board from end to end once you begin staining.
TWP 1500 Series Wood and Deck Preservative is the only wood preservative registered by the EPA. It is designed for all exterior wood surfaces. It has outstanding penetration properties and excellent UV resistance from wood graying. It has superb color retention and is not prone to cracking, peeling, or flaking. TWP 1500 Series will only fade in time and can simply be cleaned and reapplied as necessary for maintenance.
Ask a Question
512 Comments on "How To Apply TWP 1500 Stain"
My deck and pergola is only 30 days old going to clean with gemini step 1 and step 2 can I apply stain in 48 hrs ?
See this about new wood: https://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/
Must weather for 4-12 months and then be prepped. 48 hours after prep you can stain.
For cedar siding which of your products is recommended? Is TWP oil or water based?
Use the TWP 1500 Series which is oil based,
Procedures to apply 1500 on new wood spruce rail fence?
Rough cut wood on the fence or smooth? See this for some tips: https://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/
Hello, how long after application does the outdoor temperature need to remain above freezing? Thank you.
24 hours
New wood needs to weather fully exposed after install for 4-12 months and then cleaned and brightened for prep before applying the first coat. It cannot sit indoors or be stacked outside. Has to be installed. See this article for more tips: https://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/
Does the air temperature need to remain above 50 degrees round the clock as well as remaining dry for 48 hours after application for best results , or does the 50 degrees refer to only the temperature when applying it ? Thanks !
It can drop below 50 after you apply but not below freezing. Cooler temps also mean it will take a little longer to fully cure.
My deck guy put too much stain on the new deck (6 months old). It has been 5 days since. The deck has ‘wet’ looking and sticky areas all through the deck and railing. Some areas when I scrubbed with a rag, the excess stain is peeling off. So frustrated as I told him not to apply too much. What can I do about the rest of the excess stain applied? Can this be fixed??
See here: https://www.twpstainhelp.com/twp-stain-is-spotty-or-shiny/
Will try mineral spirits and hopefully it works. Thanks!
Lacquer thinner may work a little better.
How do I apply the Lacquer thinner? with a brush to the excess stain areas only? Will this remove the stain and will I have to re-apply the stain on those areas?
Use rags to apply and wipe off. Only removes the excess stain on top of the wood.
Redwood deck using TWP 1500 Stain. There are tacky areas that are not going to dry (or absorb). It has ben nearly 36 hours since I applied. And there is unevenness. How do I handle the tacky areas?
See this for tips: https://www.twpstainhelp.com/twp-stain-is-spotty-or-shiny/
Applied the 1st coat of TWP 1500 last weekend and had just enough stain to finish the whole deck. I want to do a second coat but now the stain is completely dry. Can I still apply a 2nd coat this coming weekend?
Also, I replaced some of the boards, so the new ones really stand out. Can I give them multiple coats to darken?
Best to wait until Spring to lightly recoat all.
The new wood will not take adtional coats right now. The TWP will not soak in.
Watched a video of TWP 1500 application on YouTube. Contractor stained three boards at a time and wiped down all three boards with a rag to remove or even out any excess. Is this approach recommended for TWP 1500?
Best to do the entire deck and if needed only, wipe down excess that does not absorb after 30-45 minutes. Saturate all oil rags in water and lay flat to dry outside.
It says above for TWP 1500 that, “It has outstanding penetration properties and excellent UV resistance from wood graying.”
Do all colors have UV resistance? If not, which colors offer UV protection?
All the colors have UV protection expect the “Clear”.
Too early. Best to wait until Spring. Prep with the a light washing.
Using 1500 for the first time on an 800 sqft. deck. To apply a second Wet coat of 1500 I will have to walk on the wet wood. Could this create any problems? Will I end up leaving shoe prints?
Thank you very much!
It will be fine. See this for tips on wet on wet: https://www.twpstainhelp.com/twp-stain-wet-on-wet-application/
TWP is a penetrating stain so it must not have soaked in fully. Back wipe to remove the excess stain. Saturate all oily rags in water and lay flat to dry outside.
TWP is a full curing stain so once fully cured, it will not track on come off.
Thank you for the quick response. I guess the confusing part is that I do not see any wet or shiny areas on the wood. That made me think it is fully absorbed.
I will start wiping it down with rags when I get home. It’s a lot of wood. Phew!
my cedar deck is prepped (2 step RAD) I will be restaining the cedar deck with TWP 1500.
My question is: what is the max time between coats on a wet on wet application. My deck is 30 X 20 and I plan on using a stain pad for application… it might take more than 10 minutes to do one coat
Thanks for your advise
Optimal time for applying the second coat is 20-60 minutes.
It can rain on it the day after applying. Try to stain within 14 days of the prep.
Thank you for the information! Have a great day!
I followed the directions for applying the TWP 1500 Dark Oak stain on my cedar deck, after stripping and then using the brightener. I love the color but on some boards their is a residue of black grit, particularly on the cedar deck chairs and lounges.
I finished applying the stain a week ago. Is there anything I can do now to remove the black grit?
There is nothing in the stain that would create or cause a “black grit” so it must be something else. Feel free to send a picture.
1. See this about new wood: https://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/
2. See above.
my deck was stained over 5 years ago with a different semi transparent stain. can I simply power wash the deck and use twp 1500 at this point.
The old coating will need to be removed first before using the TWP stains. Strippers or sanding. Brighten after.
What is the maximum moisture content of the wood prior to applying the finish?
15% or less.
Hello, can I apply TWP 100 using a roller on the deck surface?
You can but a stain pad or brush is better.
After I applied the stain I noticed the overlap showed. How soon can we apply a third coat of stain. all is dry after overnight. Can we restain today about 24 hr later?
Hello,
You should not add a third coat as it will most likely not dry correctly now. Best to wait 6-12 months, lightly clean, and apply a light coat.
If I use a stainable wood filler, will TWP stain it? Is there a specific type of wood filler I should use? Thanks
TWP will not stain the wood filler to blend. Wood filler does not work on exterior wood with semi-transparent stains like TWP.
how long can 1530 natural be stored and still be effective?
How long after application of the TWP 1500 stain can we put things back (and walk) on the deck (aka drying time)?
12-36 hours is normal. Just make sure it is fully cured and not sticky.
We used this product for the first time several days ago on our front porch. The wood was pressure treated pine and we did all of the prep work according to your instructions. It absorbed very well, almost too well in areas, but looks like it needs a second coat, can we go ahead and do this now, or do we need to wait until next year?
Best to wait since it has already started to cure.
?Will or how might the Gemini restorer chemicals impact the area around the deck where I intend to plant flowers?
Nothing will harm prior to planting flowers. If flowers are already planted, prewet, cover and rinse when done.
Would you recommend using a staining pad or a Brush to apply TWP 1520?
We like stain pads the best as they allow you to “push” the TWP into the wood deeper.
Thank you. This is a new deck that has weathered for 10 months, so the recommendation is only 1 coat this year and then another coat next year? Also do you recommend wiping with a rag after applying the stain with a pad?
Yes, that is correct. One coat this year and one light coat next year. No need to back wipe.
Hi I stained my deck last year with twp 1500 and would like to restain it again this year. Can I just wash and clean the surface or do I have to clean it with the diluted beach mixture.
No, you prep with the Gemini Restore Kit. See this for more info:
Can I apply on masonary chinking as well as logs on our log home??
You can apply TWP over wood, not masonry surfaces.
A company refinished my 20 year old cedar deck in Southern California using TWP 1500. They thoroughly washed it, then the next day sanded every inch of it and applied Natural TWP 1500 the third day. It looks fantastic. However, there are a couple boards that have some wet spots on them even a few days after they have finished. How should I address this? Should I sand, and reapply the stain? How long does the gallon last when stored?
Just wipe off any excessive stain with mineral spirits and a rag. Saturate any oily rags in water when finished and lay flat outdoors to dry.
TWP, a question: We had our deck sealed Saturday by a company using TWP 1500. They started about 9am and finished about 4:30pm, Unfortunately it began raining about 8.5 hours later (around 1am in the morning). Should I be concerned?
It is most likely fine.
I have a log house and I originally treated it with 500 series TWP stain. It’s been re-stained once also with the 500 series stain. The house has been washed and prepped and I’m ready to re-stain the house. Since the the 1500 series has replaced the 500 series do I need to do anything differently?
Also, I still have about 2-3 gal of the 500 series stain left: may I mix it with the 1500 series, or are the two incompatible when mixed?
You can mix as long as the 500 is still good. Nothing different is needed to be done as the 1500 is an improved version of the 500.
You should re-prep again using the Gemini Restore Kit and pressure washing. You should always stain within two weeks of the pressure washing/prep.
Hi, we waited a little long past summer to get our deck ready. We expect a few days of dry weather coming up. However, the temperature is 70F during the day, but falls to 40F at night. Would we still be good to stain? Or with that low of 40F at night mess it all up?
No issues with these temps.
Great thanks!
Hello, We have prepped our cedar deck with the gemini cleaner and brightner. It will have been dry for 48 hrs tomorrow. We would like to stain with TWP 1500 tomorrow but there is a slight chance of rain for the day after tomorrow. It looks like we are running out of the 3 day dry spells we have been having.
if it rains within 24 hrs after staining will the stained surface be damaged?
What is the minimum window of no rain after staining one should try for.
Thank you for your helpful guidance
Typically you need about 12-24 hours of drying before the rain. Make sure that you do not over apply and the TWP fully absorbs into the wood and you should be okay.
I stripped and applied brightener to 2700′ sq ft of vertical cedar siding in Southern California approx 4 weeks ago. The color we want to use is TWP 1502 Redwood mixed 50/50 with TWP 1500 Clear. Why does stain need to be applied within two weeks, and since I wasn’t able to do that, what do I need to do now?
Within 2 weeks is mostly for horizontals as the wood will get dirty and start to oxidize. You can go longer with verticals between prep and stain. 4 weeks is pushing it though. Make sure it is clean and has not started to oxidize. If needed, re brighten all and rinse.
I stripped all the siding, but didn’t have time to put any stain on the last 1000 sq ft. It has been 2 or 3 months since it has been stripped. At this point, shouild I do anything besides re-brighten before applying the stain?
Use the Gemini Restore a Deck kit. It is both a cleaner and a brightener. Brightener alone is not enough.
Can i use the Gemini Restore Kit in my pressure washer, or does it have to be applied by hand? Thank you.
It has to be applied with a pump sprayer or scrub brush, then pressure washed off.
Thanks!
It would be best to prep all with the Gemini Restore Kit and pressure washing. Stain all after. It is normal to have to reapply again after 2 or 3 years, so it is time.
Thanks you. I am relieved that I don’t have to strip the parts that are still looking good!
2 year old cedar deck. Previously stained with TWP 1500 last year. I cleaned and brightened per instructions with RAD. It has been raining non-stop for a week and humidity between 50 and 60%. How dry does the wood have to be? Is there a moisture meter reading? Just leaving a carboard box outside it gets “wet” from humidity.
Needs to dry for 48 hours after a heavy rain. Humidity should not change this. Moisture level below 15%
Stained my deck this week using 1503. Like a newb, I was so excited to get started that I didn’t mix the stain, and just went to town. Result = the first railing I did is a lot lighter than remainder of deck. What’s the best way to solve this? Thanks.
Best way would be to strip and start over. Use the Restore A Deck Stripper kit.
Would I not be able to leave it alone and reapply in say 12 months?
If you do not remove and reapply over, there is no guarantee that it will even out. It will be easier to remove in 12 months.
with backbrush
What nozzle tip do you recommend for TWP 1500 series staining log home?
The wider the fan, the better.
I applied 2 wet-on-wet coats of TWP this morning to half of my deck but waited to do the other half until the evening because of sun and temperature. Although rain was not forecast, it began raining as I finished putting on the first coat to the other half of the deck. It has been raining off and on ever since. I am not sure what to do now since half the deck has 2 coats and the other half has only one coat. I’m also not sure how the rain will affect it. Any advice is appreciated.
Let the rain water dry off and assess the deck. You may need to strip and start over on the second half of the deck where it started to rain. Problem is that it is very hard to strip half a deck without affecting the other half. The whole deck may need to be stripped and brightened to ensure it all dries and applies properly with an even appearance. You can upload pictures if you would like.
Pictures before and after I wiped the rain up. More rain is now forecasted for this afternoon. Thanks for your help.
No pictures
Trying again.
It is still wet so hard to tell. Is the “black” old stain that did not come out when prepped? It might be best to just leave as is and address it next year. It will be much easier to fix after some weathering and besides the “black” in the wood, it does not look that bad.
Yes, the black is old stain. I sanded the deck to take off the old stain (it was not TWP), but not all of it came out and I didn’t want to sand it down too far. If I wait til next year, what would I need to do then? Thanks.
Strip and brighten with the Restore A Deck Kit for the prep.
I just applied you 1502 stain to my redwood deck today. Finished around 3:30 and it is currently 7:45. Some areas are still shinny and when I attempt to wipe off access it has become gummy and dry. How should I clean these shinny areas off at this point?
Use mineral spirits and rags to remove the over applied stain that has yet to dry fully. Make sure you wipe down the entire deck. Saturate all oil rags in water and lay flat to dry in the sun.
The mineral spirits didn’t really seem to take off the shine or extra stain. The shinny spots are not really sticky any longer but still very shinny. Stain looks very un-even. I applied using a garden sprayer then brushed the boards right after applying to smooth the stain. Any other suggestions?
Just leave alone and let it sit. Most likley the shine will go away over time and will even out. Your only other option would be to remove all and start over.
I want to add a second coat, but I let the first coat dry. The wood still looks thirsty. The first coat was very generous. What should I do? Any way to get a second coat on?
Not right now. It may not take and could dry shiny or sticky. Best to wait until Fall or next Spring. Lightly was and apply one coat.
Thanks
We just resided our mountain home with board and batten. The board is new rough sawed fir and the batten is new cedar .Can you advise us on how to best prep the siding before using TWP 1500.
If it is rough wood then you do not need to prep. Just go ahead and stain.
The cedar batten is not rough. What should I do with it? Will what I do to it affect the rough fir?
Since most of the wood is rough we would leave it and stain. Make sure the wood is fully dry.
I need advice please. My painter stained a new deck with TWP and didn’t do a good job, he applied one coat and it’s very uneven. It’s been already a month and now he wants to apply another coat and he thinks he can even it out, is that possible?
No we would not suggest this. See this about new wood: https://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/
Can I thin TWP 1500 for the first coat?
No that would not be a good idea to thin the TWP.
Hello, stain after 48 hours of prep or heavy rain. Try to stain within 2 weeks of the prep. Makes sure to sweep or blow off any dirt.
Perfect – thank you!