These calculations will help you determine the square footage for the proper amount of stain and prepping supplies needed to refinish your deck or fence using TWP 100 or TWP 1500 Series.

This is intended to provide you with an approximate estimate only. Material requirements may vary according to application method, surface condition, and weather conditions.

Prepping Options

  • Gemini Restore Kit. This will be used for new, gray, dirty decks and for applying TWP over an intact older coating of TWP.
  • Restore-A-Deck Stripper and Restore-A-Deck Brightener. This is used for removing old coatings of stain. Use this if you are switching from a different brand to TWP or if you have a neglected coating of TWP that has failed unevenly.

Deck Sq. Footage

Flooring Length x width =?

Railing Length x height =?

Steps Width x Depth x #of Steps =?

Add up all 3 for the Total Sq. footage.

Fence Sq. Footage

Length x height =?

Multiply x 2 for both sides = Total Sq. Footage

If you have questions, please ask below.

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  • We will reply to your comment shortly
    Bill Thanel · 08/17/2014
    Where can I get or see sample on pressure treated wood.
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    TWP Stains · 08/05/2014
    Jay Burdette:
    I am applying the stain to a deck that is 8 years old and nothing ever applied. What should I use to clean it first? thanks

    Use the Gemini Restore Kit for prep.
  • We will reply to your comment shortly
    Jay Burdette · 08/05/2014
    I am applying the stain to a deck that is 8 years old and nothing ever applied. What should I use to clean it first? thanks
  • We will reply to your comment shortly
    TWP Stains · 08/04/2014
    Jeff Whiteman:
    Which TWP stain is the clearest? My deck is a slightly weathered yellow cedar and I would like to find something that preserves it but does not add any additional color to it.

    The Clear has no tint.
  • We will reply to your comment shortly
    Jeff Whiteman · 08/03/2014
    Which TWP stain is the clearest? My deck is a slightly weathered yellow cedar and I would like to find something that preserves it but does not add any additional color to it.
  • We will reply to your comment shortly
    TWP Stains · 07/23/2014
    Ruth V.:
    I live in Washington state near the Puget Sound. Which TWP stain/sealer is best for a new cedar fence and how long do I wait to stain it? What weather conditions are needed to apply the stain?

    If the cedar is rough sawn (fences usually are) then you can stain right away. If smooth wood like a deck, you will need to wait 4-12 months and prep first with the Gemini Restore Kit. Use the 100 Series and with temps between 55-90 with no rain.
  • We will reply to your comment shortly
    Ruth V. · 07/23/2014
    I live in Washington state near the Puget Sound. Which TWP stain/sealer is best for a new cedar fence and how long do I wait to stain it? What weather conditions are needed to apply the stain?
  • We will reply to your comment shortly
    TWP Stains · 07/17/2014
    stacey t:
    I stripped my deck over 2 weeks ago. Becuase it has rained on it several times since then, do I still need to use a deck brightner or has the stripper neutrialized with the time lapse?

    Yes you should still neutralize if you have not.
  • We will reply to your comment shortly
    stacey t · 07/16/2014
    I stripped my deck over 2 weeks ago. Becuase it has rained on it several times since then, do I still need to use a deck brightner or has the stripper neutrialized with the time lapse?
  • We will reply to your comment shortly
    TWP Stains · 07/16/2014
    Sharon Kurmaniak:
    Hi. I live in Commerce Township, Michigan. My deck is mostly in the shade. It is several years old and was last stained two years ago. It is graying. Not a lot of mold

    Sharon, probably would be best to come into our store for help:
    2388 Franklin Rd
    Bloomfield Hills Mi 48302
  • We will reply to your comment shortly
    Sharon Kurmaniak · 07/16/2014
    Hi. I live in Commerce Township, Michigan. My deck is mostly in the shade. It is several years old and was last stained two years ago. It is graying. Not a lot of mold
  • We will reply to your comment shortly
    TWP Stains · 07/16/2014
    Asher Vilensky:
    Hi. I live in Atlanta, GA. My deck is mostly in the shade. It is stripped and clean. I calculated 412 sq feet of deck + railing. How many gallons of stain-sealer do I need and which one is recommended?

    Thanks.

    Did you use the calculator above for total sq. footage? Use the 100 Series.
  • We will reply to your comment shortly
    Asher Vilensky · 07/15/2014
    Hi. I live in Atlanta, GA. My deck is mostly in the shade. It is stripped and clean. I calculated 412 sq feet of deck + railing. How many gallons of stain-sealer do I need and which one is recommended?

    Thanks.
  • We will reply to your comment shortly
    TWP Stains · 07/09/2014
    Jonathan Libber:
    I stained the deck with a Cabot translucent stain 4 years ago. I power washed my deck with water, and it got rid of the dirt, mildew and lose stuff. Do I need to do more prep before re-staining? If I need more prep, what do I need to do?

    You need to remove the cabot with the Restore Stain Stripper we sell and pressure wash. Once removed you will need to neutralize with the Restore A Deck Brightener. This removes the Cabot and this is vital for the TWP to work well.
  • We will reply to your comment shortly
    Jonathan Libber · 07/09/2014
    I stained the deck with a Cabot translucent stain 4 years ago. I power washed my deck with water, and it got rid of the dirt, mildew and lose stuff. Do I need to do more prep before re-staining? If I need more prep, what do I need to do?
  • We will reply to your comment shortly
    TWP Stains · 07/08/2014
    Debra Edgington"]I have a combination issue with a deck that I need some advice on, please. I replaced the entire floor of the deck but left the intact railing since it was in good repair as was a portion of the flooring but thought this was the best option for preparing my house for market. When should I apply any treatment to the pressure treated wood decking and what kind of cleaner/stripping agent could I use prior to the old existing wood to achieve a uniform look for stain and/or color to the entire deck? I live in the Gulf Coast area of the South and we typically deal with a lot of mildew and mold issues. Any help that you could provide would be very much appreciated. Thank you[/quote]
    [quote name="Debra Edgington"]I have a combination issue with a deck that I need some advice on, please. I replaced the entire floor of the deck but left the intact railing since it was in good repair as was a portion of the flooring but thought this was the best option for preparing my house for market. When should I apply any treatment to the pressure treated wood decking and what kind of cleaner/stripping agent could I use prior to the old existing wood to achieve a uniform look for stain and/or color to the entire deck? I live in the Gulf Coast area of the South and we typically deal with a lot of mildew and mold issues. Any help that you could provide would be very much appreciated. Thank you[/quote]
    [quote name="Debra Edgington:
    I have a combination issue with a deck that I need some advice on, please. I replaced the entire floor of the deck but left the intact railing since it was in good repair as was a portion of the flooring but thought this was the best option for preparing my house for market. When should I apply any treatment to the pressure treated wood decking and what kind of cleaner/stripping agent could I use prior to the old existing wood to achieve a uniform look for stain and/or color to the entire deck? I live in the Gulf Coast area of the South and we typically deal with a lot of mildew and mold issues. Any help that you could provide would be very much appreciated. Thank you

    What brand of stain and type is on the rails?
  • We will reply to your comment shortly
    Debra Edgington · 07/08/2014
    I have a combination issue with a deck that I need some advice on, please. I replaced the entire floor of the deck but left the intact railing since it was in good repair as was a portion of the flooring but thought this was the best option for preparing my house for market. When should I apply any treatment to the pressure treated wood decking and what kind of cleaner/stripping agent could I use prior to the old existing wood to achieve a uniform look for stain and/or color to the entire deck? I live in the Gulf Coast area of the South and we typically deal with a lot of mildew and mold issues. Any help that you could provide would be very much appreciated. Thank you
  • We will reply to your comment shortly
    TWP Stains · 07/08/2014
    Martin Krievs:
    I turned the deck boards over on a 12 yr old deck- look good.
    What do I do to prep before applying your 1500 series stain.. or the 100 if you so recommend.

    Prep first with the Gemini Restore Kit.
  • We will reply to your comment shortly
    Martin Krievs · 07/07/2014
    I turned the deck boards over on a 12 yr old deck- look good.
    What do I do to prep before applying your 1500 series stain.. or the 100 if you so recommend.
  • We will reply to your comment shortly
    TWP Stains · 07/01/2014
    Mary M:
    Lakefront, VT, cedar siding. Restored and stained with TWP 7 years ago. Now mildew, dirt and uneven fading. What needs to be done to get best results with TWP 1500 series?

    Prep first with the Gemini Restore Kit and a light pressure washing.