Calculator

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
    Smew · 07/30/2017
    Which color is closest to the natural/clear.
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    TWP Stains · 06/26/2017
    J. Christianson:
    What do you mean by "wet on wet?"

    See this for tips: https://www.twpstainhelp.com/twp-stain-wet-on-wet-application/
  • We will reply to your comment shortly
    J. Christianson · 06/25/2017
    What do you mean by "wet on wet?"
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    TWP Stains · 06/12/2017
    Brandon Drury:
    I'm trying to estimate stain needed for a four-board cedar fence, standing about 50" tall. The boards are 16' x 5" x 1", and we have 360' feet total.

    Further, we have 45 treated 5" round posts. Would we be able to stain those since they are treated?

    PS - I saw the question about the cedar fence below, and mine is definitely rough sawn (not smooth at all!) What has been your experience with using the pump sprayers for TWP stains?

    Total length x height x 2 for the fence sq. footage. Let us know what this equates to.

    You can pump spray on the first coat and back brush in the second coat.
  • We will reply to your comment shortly
    Brandon Drury · 06/12/2017
    I'm trying to estimate stain needed for a four-board cedar fence, standing about 50" tall. The boards are 16' x 5" x 1", and we have 360' feet total.

    Further, we have 45 treated 5" round posts. Would we be able to stain those since they are treated?

    PS - I saw the question about the cedar fence below, and mine is definitely rough sawn (not smooth at all!) What has been your experience with using the pump sprayers for TWP stains?
  • We will reply to your comment shortly
    TWP Stains · 06/08/2017
    Chris Griffin:
    I had a new fence installed last week (Western Cedar) thats 55' long and 5' tall. I did not see any concrete guidelines but it sounds like maybe (sanding required?) power wash and stain after 3 months. Is this correct? Does new cedar tend to only require 1 or 2 coats?

    I think I will probably order 2 samples before purchasing the 1500 (required in my state) however I was wondering if you had pictures from customs posted anywhere showing the colors?

    Thanks!!

    You do not sand for prep but use the Gemini Restore Kit. New smooth wood needs to weather for 4+ months and prepped with the Gemini Restore Kit and 1 coat of stain. If the wood is rough sawn cut, you can stain now with 2 coats..
  • We will reply to your comment shortly
    Chris Griffin · 06/07/2017
    I had a new fence installed last week (Western Cedar) thats 55' long and 5' tall. I did not see any concrete guidelines but it sounds like maybe (sanding required?) power wash and stain after 3 months. Is this correct? Does new cedar tend to only require 1 or 2 coats?

    I think I will probably order 2 samples before purchasing the 1500 (required in my state) however I was wondering if you had pictures from customs posted anywhere showing the colors?

    Thanks!!
  • We will reply to your comment shortly
    TWP Stains · 06/05/2017
    ron anderson paintin:
    Can I get TWP 1500 in a semitransparent reddish tone? I’m doing a deck with an old redwood stain color on it.

    It comes in a Redwood color and a Rustic Color that are reddish: https://www.twpstain.com/twp-1500-series-5-gallon

    To use the TWP, you will need to prep by removing the prior stain.
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    ron anderson paintin · 06/05/2017
    Can I get TWP 1500 in a semitransparent reddish tone? I’m doing a deck with an old redwood stain color on it.
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    TWP Stains · 06/05/2017
    John Clark:
    Hi,
    We have 600 running feet of three-rail solid-picketed pine fence, 6 foot tall. It surrounds our group home on three sides. A band of volunteers is coming to stain the side with the rails this go-round. The fence is older, in fair shape, pressure-washed and thirsty. Will be applied by roller and brush. How much 100 Series do you recommend we order? Many thanks.

    600 x 6 x 2 (both sides) = 7200 Sq. feet. For the two coats applied wet on wet you will need about 60-70 gallons.
  • We will reply to your comment shortly
    John Clark · 06/05/2017
    Hi,
    We have 600 running feet of three-rail solid-picketed pine fence, 6 foot tall. It surrounds our group home on three sides. A band of volunteers is coming to stain the side with the rails this go-round. The fence is older, in fair shape, pressure-washed and thirsty. Will be applied by roller and brush. How much 100 Series do you recommend we order? Many thanks.
  • We will reply to your comment shortly
    TWP Stains · 05/22/2017
    Richard Dollens:
    How much stain for a 16x16 deck with rails and spindles around the deck. Deck has been cleaned extensively.

    Please enter your numbers into the calculator above.
  • We will reply to your comment shortly
    Richard Dollens · 05/22/2017
    How much stain for a 16x16 deck with rails and spindles around the deck. Deck has been cleaned extensively.
  • We will reply to your comment shortly
    TWP Stains · 05/16/2017
    Richard Francisco"]The deck in question is of treated pine. The wood has been exposed to the elements of Ohio since November 2016. My question is relative the need to use the cleaner prep. and pressure wash. If cleaner is required is a standard hose wash acceptable?[/quote]
    [quote name="Richard Francisco:
    The deck in question is of treated pine. The wood has been exposed to the elements of Ohio since November 2016. My question is relative the need to use the cleaner prep. and pressure wash. If cleaner is required is a standard hose wash acceptable?

    Hello, see this about new wood:

    https://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/

    It will explain the correct steps.
  • We will reply to your comment shortly
    TWP Stains · 05/16/2017
    michael reck:
    how many gallons of twp 1500 do I need to cover 1,050 sq ft

    For two coats applied wet on wet, about 8-10 gallons.
  • We will reply to your comment shortly
    michael reck · 05/16/2017
    how many gallons of twp 1500 do I need to cover 1,050 sq ft
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    TWP Stains · 05/15/2017
    Tom T:
    Our deck is pressure treated built in 1985 and located in a wooded north exposure. Get about 1 hour of direct sun per day. The last time I stained it was over ten years ago. I pressure wash it about every 2 - 3 years with a 2800 PSI 7.5HP unit. Power Washed 3 days ago and the deck still looks great. Thinking about twp101, it's bright. Deck surface 400 sf, wood walkway 130sf, and built in benches 60 sf. Last time I sealed the deck was ten years ago and I rolled it. All stain and sealer seems to be going after 3 - 4 power washings during that time. Happy with brightness and cleanliness. Do I still need additional prep? Was thinking 1 5 gallon can. Thoughts?

    Sound like your prep is good. Make sure it is clean and all old coatings are removed. For two coats, you will need about 5-6 gallons.
  • We will reply to your comment shortly
    Tom T · 05/15/2017
    Our deck is pressure treated built in 1985 and located in a wooded north exposure. Get about 1 hour of direct sun per day. The last time I stained it was over ten years ago. I pressure wash it about every 2 - 3 years with a 2800 PSI 7.5HP unit. Power Washed 3 days ago and the deck still looks great. Thinking about twp101, it's bright. Deck surface 400 sf, wood walkway 130sf, and built in benches 60 sf. Last time I sealed the deck was ten years ago and I rolled it. All stain and sealer seems to be going after 3 - 4 power washings during that time. Happy with brightness and cleanliness. Do I still need additional prep? Was thinking 1 5 gallon can. Thoughts?
  • We will reply to your comment shortly
    TWP Stains · 05/11/2017
    Alex H:
    Hi I have a red cedar fence which was stained with 1500 3 years ago. I want to do a maintenace coat the stain is still holding up good. Do I still need to use the cleaner and brightener before I re stain? Or is cleaner good enough

    Cleaner for sure, Brightener can be used as well.
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    TWP Stains · 05/04/2017
    David Mullins:
    I have a western red cedar fence that is unfinished and about 18 months old. It is six feet tall and 185 linear feet. Id like to use TWP 100 semi-transparent. How much should I order?

    For two coats applied wet on wet to both sides of the fence, you will need about 20-22 gallons. make sure to prep the wood first with the Gemini Restore Kits.