This calculator will help you determine the proper amount of stain and prepping supplies needed to refinish your deck using TWP 100 or TWP 1500 Series.

 

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

 

You will get two prepping results. You need one, not both options:

  • First will offer the Gemini Restore Kit. This will be used for new, gray, dirty decks and for applying TWP over an intact older coating of TWP.
  • Second is the 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.

 

If you have questions as to which to use, please ask below.

 

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  • We will reply to your comment shortly
    joe sebes · 04/24/2015
    I have 880 square ft. deck pressured treated pine deck. It is 20 years old has been sanded down to natural wood removing previous layers of latex opaque stain.
    Is this prepped enough and how many coats of 1500 needed and how many gallons required.
  • We will reply to your comment shortly
    TWP Stains · 04/23/2015
    rick gilbertson:
    looking at restaining exterior walls and washing and staining roof shakes.if you could send me a direct number to disscuss product to use I am located in Canada but client is located in u s . thank you rick gilbertson rg painting

    Phone numbers are in our contact link:
    http://www.twpstain.com/contact/twpstain
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    TWP Stains · 04/23/2015
    Roy Wong:
    Where am I able to purchase twp1500 in Vancouver, Canada?

    Hello, TWP 1500 and 100 are not allowed in Canada.
  • We will reply to your comment shortly
    Roy Wong · 04/23/2015
    Where am I able to purchase twp1500 in Vancouver, Canada?
  • We will reply to your comment shortly
    rick gilbertson · 04/22/2015
    looking at restaining exterior walls and washing and staining roof shakes.if you could send me a direct number to disscuss product to use I am located in Canada but client is located in u s . thank you rick gilbertson rg painting
  • We will reply to your comment shortly
    TWP Stains · 04/19/2015
    JTP:
    We will be recyling old redwood decking by planing first. So, this will be old wood but with a new surface. Do i prep as old wood with open pores, or do I have to go through the wetting cycles of new wood? I plan to seal before applying the decking so treating as old wood is much easier.

    You should treat this like new wood and not pre stain but let weather and prep before staining. Please read this:
    http://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/
  • We will reply to your comment shortly
    TWP Stains · 04/19/2015
    Mark Shipp:
    My 25 year old pressure treated pine fence has never been cleaned or stained. It is being power at this moment. The cleaner is using an industrial strength liquid sodium hypochlorite solution under low pressure to pre-wet, then powering it off. n It is looking great. do I still need to use the whole Gemini prep kit, or just the brightener/neutralizer? How long will it need to dry before Applying the TWP 100?

    You can just brighten as long as the wood is cleaned well. Stain after 2 days of drying.
  • We will reply to your comment shortly
    JTP · 04/19/2015
    We will be recyling old redwood decking by planing first. So, this will be old wood but with a new surface. Do i prep as old wood with open pores, or do I have to go through the wetting cycles of new wood? I plan to seal before applying the decking so treating as old wood is much easier.
  • We will reply to your comment shortly
    Mark Shipp · 04/18/2015
    My 25 year old pressure treated pine fence has never been cleaned or stained. It is being power at this moment. The cleaner is using an industrial strength liquid sodium hypochlorite solution under low pressure to pre-wet, then powering it off. n It is looking great. do I still need to use the whole Gemini prep kit, or just the brightener/neutralizer? How long will it need to dry before Applying the TWP 100?
  • We will reply to your comment shortly
    TWP Stains · 04/17/2015
    richlife :
    I've previously used TWP 100 and 1500 series on my deck. A contractor has said to use the 200 series. Can you explain why he would choose this (I see that it has more pigment)? Is the coverage the same (100-200 sq ft)?

    The 200 Series is for Shakes and Shingles. Better to use the 100 or 1500. It does not have more pigment but more solids.
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    Rich Beaudry · 04/16/2015
    I've previously used TWP 100 and 1500 series on my deck. A contractor has said to use the 200 series. Can you explain why he would choose this (I see that it has more pigment)? Is the coverage the same (100-200 sq ft)?
  • We will reply to your comment shortly
    TWP Stains · 04/12/2015
    tim meyer:
    Please help us determine what products we need.
    We have a 1100 sq ft green treated deck that was stained over 10 years ago. We need to strip the old stain, address the black mildew areas and re-stain. Do we need a cleaner, stripper and brightener? Our main goal is durability and longevity. We live in Minnesota so the environment is harsh.

    You need the RAD Stripper and Brightener for the prep. You do not need the cleaner. Use the 100 Series.
  • We will reply to your comment shortly
    tim meyer · 04/12/2015
    Please help us determine what products we need.
    We have a 1100 sq ft green treated deck that was stained over 10 years ago. We need to strip the old stain, address the black mildew areas and re-stain. Do we need a cleaner, stripper and brightener? Our main goal is durability and longevity. We live in Minnesota so the environment is harsh.
  • We will reply to your comment shortly
    TWP Stains · 04/06/2015
    Mark Shipp:
    I live in Cookeville, TN 38501 (between Nashville and Knoxville) I have a privacy fence, built with pressure treated 5/4 decking boards for the verticals, up for about 12 years. It never been stained or painted, or washed. I plan to use a Wagner sprayer that will feed directly out of a bucket to apply the stain,thenback-brush. I have about 3,588 square feet, that is cleaning and staining both sides. I'm thinking maybe the Redwood color stain. (1)what do I need to clean with, and how much will I need? (2)Which stain is the best for me to use, and how much will I need? (3)What is the total cost of everything I will need to get from you? Thank you, Mark

    Prep with the Gemini Kit. You will need about 4 of the kits for this amount. Use the 100 Series and you will need about 25-40 gallons for 2 coats applied wet on wet. The large difference in amount is based on how dried out your wood is. All prices are on the links above.
  • We will reply to your comment shortly
    Mark Shipp · 04/06/2015
    I live in Cookeville, TN 38501 (between Nashville and Knoxville) I have a privacy fence, built with pressure treated 5/4 decking boards for the verticals, up for about 12 years. It never been stained or painted, or washed. I plan to use a Wagner sprayer that will feed directly out of a bucket to apply the stain,thenback-brush. I have about 3,588 square feet, that is cleaning and staining both sides. I'm thinking maybe the Redwood color stain. (1)what do I need to clean with, and how much will I need? (2)Which stain is the best for me to use, and how much will I need? (3)What is the total cost of everything I will need to get from you? Thank you, Mark
  • We will reply to your comment shortly
    TWP Stains · 04/03/2015
    Fern Cottage:
    16x24 deck
    Iron rails but wood corner posts (10)

    About 400-500 total sq. feet.
  • We will reply to your comment shortly
    Fern Cottage · 04/03/2015
    16x24 deck
    Iron rails but wood corner posts (10)
  • We will reply to your comment shortly
    TWP Stains · 04/03/2015
    Jason Mac:
    I want to dip 600 2x6x8' fence boards. How many gallons do you think I will need to do this??

    AND will I need a second coat if they are dipped?

    Jason, please supply us with a total sq. footage of the wood for all sides. In addition is this wood smooth or rough sawn? If rough sawn you can do this. If smooth you cannot. Please read this about new wood: http://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/
  • We will reply to your comment shortly
    Jason Mac · 04/02/2015
    I want to dip 600 2x6x8' fence boards. How many gallons do you think I will need to do this??

    AND will I need a second coat if they are dipped?
  • We will reply to your comment shortly
    TWP Stains · 03/26/2015
    Barry Behrens:
    I have a 14x20 ft shed that is 1-1/2 years old. The outside walls are 8ft with a 11in overhang and gable roof. It has rough 4in vertical grooved plywood (similar to T1-11) with a very light dry stain. I plan on staining on darker color. How should this be prepped and how much stain?

    What is the total sq. footage of wood that is being stained? If you have an older stain then you will need to remove that with the RAD Stain Stripper and Rad brightener when done.