TWP 1500 Series 1 Gallon

2 Ratings 2 Reviews

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TWP 1500 Series 1 Gallon ColorsTWP 1500 1 Gallon Stain

TWP 1500 is a Semi-transparent Oil-Based wood stain and preservative that is allowed in all 50 states.

The new TWP® 1500 formula is designed to penetrate better, dry faster and outperform the previous TWP® 500 series formula.

TWP® 1500 Series is an EPA registered wood preservative which prevents structural damage and wood decay on exterior above ground wood surfaces such as fencing, decking, wood siding, log homes, and roofing. TWP® 1500 Series resists water absorption that causes warping, cracking and splitting as well as preventing freeze damage in colder climates.

TWP® 1500 Series is a low VOC preservative with special U.V. absorbing pigments that prevent unsightly wood graying, darkening and fading. The selected mildewcides inhibit the growth of mold and mildew which assist in preventing premature discoloration.

TWP® 1500 Series will keep your wood beautiful, fresh and looking new longer. The ease of application and maintenance will allow you to enjoy your investment for years to come.

TWP 1500 Series Stain QuestionsKey Features

  • Preserves natural wood color
  • EPA registered wood preservative
  • Professional choice for all exterior wood surfaces
  • Semi-transparent stain preserves natural color
  • Sheds water longer
  • Prevents mold and mildew
  • Helps to prevent wood rot
  • Easy to apply and can be cleaned and recoated as needed
  • Helps in the prevention of warping, cracking and splitting
  • Low 250 VOC formula, compliant in 50 states
*We do not guarantee stain colors as they will vary widely depending on the wood type, age of wood, prepping of wood, and application. Small samples are available.

1500 Series and Deck Stain 1 Gallon


Have Questions on Prep and Application?

Visit our Help Site for all the answers!


Gallon Sizes: 1's & 5's
Stain Type: Semi-Transparent Oil-Based
Coverage Per Gallon: 150-200 square feet
Coats  Required: 1-2 Coats. "Wet on Wet"
Temperature: 45-95 F
Application Tools: Pad, Sprayer, Brush, Roller
Dry Time: 12-72 Hours
Cleanup: Mineral Spirits
State VOC Limits: Compliant in all States
More Info:

Product Data

TWP 1500 Series Info



Wednesday, 02 October 2019

We have used this product twice on our pressure-treated wood deck (. It applies easily and looks terrific when done. We are DIYers with limited experience with this sort of project, and had no trouble following the application directions. We had to address a lot of wood damage before applying it--severe UV damage, mold and mildew--but with the right prep, we couldn't be happier with the outcome. The second time we used it, we did over-apply a bit and had a lot of shiny excess stain after a few hours of drying. We read the tips here on the website and the next day we wiped off the excess using a light misting of mineral spirits and shop rags. Easy fix and it looks great. Never any peeling, which is just what we wanted, and it made our heavily damaged wood look better than we thought possible. I love finding a product that works as well as advertised.


Thursday, 19 October 2017

A true oil-based wood preservative that is allowed in all 50 states!

TWP Stains

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  • We will reply to your comment shortly
    Ken Drisdell · 06/22/2023
    Ken Drisdell, 6/22/23
    What is the danger if I do not wait to allow the kiln dried Batu to weather for the 6-12 months and just finish it now before adding it to the steel frame for outdoor use?
    • We will reply to your comment shortly
      TWP Stains · 06/22/2023
      It is about porosity, not how dry the wood is. Lack of penetration for new wood that has not seasoned could lead to premature failure.
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    Ken Drisdell · 06/22/2023
    Ken Drisdell 6/22/23
    Do you have to wait the recommended 4-6 weeks for weathering if you are using kiln dried wood? The plan is to prefinish Batu hardwood slats and apply them to a steel frame for outdoor use.  
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      TWP Stains · 06/22/2023
      Yes, you should wait and prep.
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    Athena · 06/22/2023
    Can i use this product on new pressure treated wood that was kiln dried, but also  colored (Prowood Duracolor)
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    Ken Drisdell · 06/21/2023
    Ken D. San Rafael CA 6/21/23
    I plan to use the TWP 1500 series to stain Batu wood slats applied to a steel frame for an enclosure wall. Is one coat sufficient for this dense hardwood? I prefer the natural mahogany color of the wood yet we need UV protection to keep it from greying. Can you suggest the bests color to accomplish this?
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      TWP Stains · 06/21/2023
      One coat. Look at the Rustic color.
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    David · 06/20/2023
    Hi. Ipe in Northern CA. Rainy in winter, sunny in summer, 80-90 deg. Wood is weathered to gray, 2 yr old, with no stain/coating. Assume clean/brighten, TWP 1500. Should I sand 40 grit, or will graying be removed in cleaning process. What should I expect for coverage, 250 sq foot? If applying with pad, do I need to back brush?
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      TWP Stains · 06/21/2023
      Just clean and brighten, no need to sand. 250 per gallon for IPE. Just one coat. 
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    Frank M. · 06/19/2023
    I am replacing all of my 35 year old redwood decking, but leaving the railing that is still serviceable. My plan is to cut then stain all boards so there is TWP coverage over the whole board. Then in 6 months or so I would strip and brighten all wood (railings and decking), hoping that the upper decking faces will have cured and after stripping be ready to swallow the new stain. Is that feasible?
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      TWP Stains · 06/20/2023
      No. New wood needs to be installed, weathered, and prepped before staining:

      There is no point or advantage to staining all sides of the wood. Only stain the exposed wood after the steps are followed.
      • We will reply to your comment shortly
        Frank M. · 06/20/2023
        OK, thank you. If I put the decking down and leave it to weather, can I use the stripper I need on the railings to act as the cleaner, followed with a brightener? Or do I specifically need to use cleaner, not stripper?
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          TWP Stains · 06/20/2023
          We would suggest the Cleaner over the Stripper for the new wood.
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    Elfi R. · 06/16/2023
    We have a 450 sqf redwood deck built 6 years ago that has been stained annually with penofin clear. Now we added another 250 sqf redwood deck 1 month ago. We want to switch to TWP 1500 (for Colorado). How do we prepare our old deck for the new stain? How long should we wait to stain the new addition? Do you recommend to use 1500 clear or 1502 redwood? Should we use the same stain for old and new deck? We live at 5300' altitude.
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    Eric · 06/12/2023
    Do I need to power wash after sanding or can i just apply stain then? Sanding to remove old varnish
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      TWP Stains · 06/12/2023
      Best to clean and brighen after sanding to help open up the wood grain. Do not sand finer than 80 grit.
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    Gregory Mikkelsen · 06/01/2023
    Hi, very happy with 1500 product used on deck railings (see picture). Although prep was very time consuming. Had to remove peeling urethane so many hours striping sanding and whitening. Result is worth it. 
    Buttttt, now I have to restain sun and weather beaten house. 8 years since built and looks like only one coat of something applied. 1. Should I use 1500 or the new 200 product on rough cut, sun worn pine(see picture)? 2. Same question for cedar. Some sun protected (see picture). 3. Now the dreadful prep. The hose is tall and I can't imagine how long it would take to tape windows, strip, whiten everything. Is there any option, I can't sand the rough cut pine. Can I powere wash and apply stain?
    • We will reply to your comment shortly
      TWP Stains · 06/01/2023
      Use the TWP 1500 for all wood. As for prep, it needs to be stripped and brightened to remove the old coatings. You cannot apply TWP (or any other brand) of a different brand of semi-transparent stain. To be safe, we would highly suggest getting a Boom Lift while working. It would make it so much easier as well.
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    Angelina Ramirez · 05/30/2023
    We have just recently remodeled our deck with new standard pressure treated lumber. About 30 days ago we treated the wood with Thompson's WaterSeal Clear Wood Sealer Clear Oil-Based Wood Sealant. We wanted the natural look but now realizing that this is not a good option for UV protection. We are going to purchase this product and would like to know when I apply your product can I put it directly over the sealer already on there or do I need to sand it down first or is there a product you recommend to strip it. Thanks!
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    Matt F · 04/28/2023
    I have a Yellow Cedar deck. Built Fall 2021. July 2022 I stained the deck following all instructions of Olympic Summit, Stain + Sealant, Woodland Oil, Transparent, Natural, product code 801102C. After one winter, every part of the deck that was snow covered if peeling off. After I strip and sand the deck to remove all of this stain that didn't last 12 months, should I leave it unprotected, or is there a product that would last 2+ years. We live in Fernie, BC, Canada where we get significant snow and a few thaw-freeze cycles per winter. Thanks for any suggestions of what I should use (if anything) after starting over
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    Sean Murphy · 04/27/2023
    I have a brand new fir decking on my covered front porch. Want to keep the color and look of the wood. Should I use 1500 or 1530 or a different one. Don’t really wanna stain it. Just seal it but with some Uv protection if possible   Thanks 
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      MBC · 04/27/2023
      I bought 3 samples to select the stain for my one year old deck. Natural 1530 was light and highlighted the knots and grain enough to keep it natural looking, yet UV protected. I went with it. Samples will help you make a good decision.
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      TWP Stains · 04/27/2023
      See here about new wood:

      If you want UV protection then you must use a tinted stain color. 1515 Honeytone is the lightest tint.
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        Jeff Wilson · 05/15/2023
        would there be any application or drying issues with using 1515 Honeytone for a first coat. And then 1500 Clear for the second coat of wet on wet.  would like some UV protection, but not all the color 
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    Dustin · 04/23/2023
    Is your Black Walnut the same as Dark Walnut? My builder listed TWP Dark Walnut Gel Stain on our spec sheet. Need to re-stain deck and wood on house from original TWP stain in 2018 but cannot find “dark walnut” on your site. Thx!
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      TWP Stains · 04/23/2023
      There is no such thing as TWP Dark Walnut Gel stain. Never has been.
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    Rob · 04/15/2023
    I want to stain my Ipe deck in Upstate New York.  What product and color should I use?  
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      TWP Stains · 04/15/2023
      Most use the Rustic 1516 color. Just one coat. 
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    Gigi · 04/11/2023
    Should I apply a different UV sealant over TWP for a deck that get full sun?
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      TWP Stains · 04/11/2023
      No. You cannot apply a sealer over a deck stain. 
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    Skip K · 04/05/2023
    I have a 20+ year old PT deck located in southern Ohio that I have used TWP  1530 on for the past 10+ years.  I need to recoat it (2 years since it has been stained) and I intend to use the Gemeni Cleander and Brightener before recoating and will be recoating with TWP 1530.  My question is when do you consider sanding necessary?  My deck boards have been sanded several times in the past and currently show no signs of splintering.
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    Eric · 03/22/2023
    I have a covered porch that is smooth wood. It is previously covered with varnish and looks like indoor floors would except on the stairs that are now peeling. I used twp on my back deck and want to do it on the porch too. Am I able to do that if it’s super smooth wood that’s more like a floor than a deck? There is no space between boards. I was going to sand the varnish off but would the wood be too smooth to accept the stain?
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      TWP Stains · 03/23/2023
      Sand with 60-80 grit paper to remove the varnish and then final prep with the Gemini Restore Kit. One coat of the TWP only.
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    MBC · 03/21/2023
    I have a new 3 level deck that has weathered for 12 months now. It has grayed so we will use Gemini Restore Kit to clean and prep. House is Taupe in color and deck railings are white. Coastal location with lots of sun on 2 upper decks most of day. Which series do you recommend I use?
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    Lisa · 03/17/2023
    Can the TWP 1500 clear deck stain be customized with a tinted color?  If so which tint is best to mix into the clear deck stain?
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      TWP Stains · 03/17/2023
      No, that is not possible.
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        Tom LA · 04/04/2023
        You can mix any color 1500 series with the 1500 clear. I mixed the 1503 with the 1500 using 3 gallons of 1503 with 1 gallon of 1500. Installed the mix on western red cedar fence in 2018 and it is still one of the best looking fences in my neighborhood. You cannot mix 1500 series with 100 or 200 series product. Side note: Using clear will lighten the color you use but the clear has no real UV protection that is in the tint. TWP does not customize colors. Find your ratio by mixing small amounts, 3 tbs to 1 tbs and apply to same wood as on deck or fence before apply to installed deck or fence. My fence is 7 yrs old and lost some color so my ratio on touch up will be maybe 2/2. PS The fence has seen 5 or 6 state hurricanes and I live near the Gulf of Mexico.
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    Mike · 02/26/2023
    I need to reseal my pergola made from Doug fir and western red cedar.  I sealed it in 2016 with 1500 in dark walnut.  What is the proper prep for this?  I plan on pressure washing.  Anything else?