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
    Phil Sprute · 08/05/2015
    i have a 3600 sqft cedar shake roof in the Seattle area. How many gallons of the cedar tone TWP do I need)
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    TWP Stains · 08/05/2015
    Linda Pierce:
    I have a 1622 square foot pine 2 x 6 deck. We put Ace brand oil based stain on it when we first put the deck up two years ago and the stain did not take.. we left it so now have graying wood along with some mold and some remaining stained areas. We live in a desert climate.. low humidity with high heat and lots of sun.. and cold winters. I would like to put two coats on this time around.. what will we need?? thanks..

    Prep first to remove all old Ace stain with the Restore A Deck Stripper and pressure washing. Brighten the wood after the stripping. Apply two light coats of the TWP with the "wet on wet" method.

    3-4 of the RAD Stain Strippers
    2 of the RAD Brighteners
    About 15 gallons of stain give or take a couple of gallons as it varies on your wood and application method.
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    TWP Stains · 08/05/2015
    Charles Roedersheime:
    In using your calculator to estimate number of gallons of stain needed, I noted there was no provision for ballisters or posts for deck rails nor indication of whether the rail length would cover both cap rail and bottom rail. Also our deck has inside and outside cap and top rails to connect the ballisters. Our deck has whether the rail measurement was to include the . Our deck railings have square spindles every 3 inches plus 4 by 4 post that will be stained.The The posts are the hiegth of the rail plus 4 inches to the deck. Also our deck has a wooden grating at its base (it is elevated)and the grating is a lattice design with the 1 inch square connectors spaced about 1 inch apart. Measured the average height and length of the grating and divided in half to estimate stain needed.
    Suggestions on calculating the parts of the deck not included in measurement and method to average out the stain amount required for the grating.

    The railing height x the length covers all parts of the railings including spindles, caps, posts etc. Just do a sq. footage calculation for the lattice.
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    Charles Roedersheime · 08/04/2015
    In using your calculator to estimate number of gallons of stain needed, I noted there was no provision for ballisters or posts for deck rails nor indication of whether the rail length would cover both cap rail and bottom rail. Also our deck has inside and outside cap and top rails to connect the ballisters. Our deck has whether the rail measurement was to include the . Our deck railings have square spindles every 3 inches plus 4 by 4 post that will be stained.The The posts are the hiegth of the rail plus 4 inches to the deck. Also our deck has a wooden grating at its base (it is elevated)and the grating is a lattice design with the 1 inch square connectors spaced about 1 inch apart. Measured the average height and length of the grating and divided in half to estimate stain needed.
    Suggestions on calculating the parts of the deck not included in measurement and method to average out the stain amount required for the grating.
  • We will reply to your comment shortly
    Linda Pierce · 08/04/2015
    I have a 1622 square foot pine 2 x 6 deck. We put Ace brand oil based stain on it when we first put the deck up two years ago and the stain did not take.. we left it so now have graying wood along with some mold and some remaining stained areas. We live in a desert climate.. low humidity with high heat and lots of sun.. and cold winters. I would like to put two coats on this time around.. what will we need?? thanks..
  • We will reply to your comment shortly
    TWP Stains · 08/04/2015
    Teresa M:
    I have been using the wet in wet method of applying two coats of stain. I have one small landing section of stairs, about 4x5 that was missed with second coat. Can I go back and do a second coat since it is dry or do I have to strip it and start over on that section?

    Best to leave that section alone for a few months, lightly clean, and apply a very thin light coat.
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    Teresa M · 08/04/2015
    I have been using the wet in wet method of applying two coats of stain. I have one small landing section of stairs, about 4x5 that was missed with second coat. Can I go back and do a second coat since it is dry or do I have to strip it and start over on that section?
  • We will reply to your comment shortly
    TWP Stains · 08/04/2015
    Brian Steyer:
    we are residing our house in WI with cedar siding. There is 2600 sq feet of siding to stain and we going to stain both sides of the siding before installing it on the house. Should we use the 100 or 1500 and how much stain will should we get?

    Thank you

    There is no advantage to staining both sides. Also you cannot stain new wood right away with TWP unless it is rough cut siding. If smooth cedar, then install, wait 4-12 months, prep and stain.
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    TWP Stains · 08/04/2015
    Witte3767:
    I have about 840 SF of Cedar deck to strip, restore, and stain. The deck is 5 years old. The wood is in good condition. The previous stain was a Sikkins Oil based stain for decks. What products do I need and how much do I need of each? Thank you.

    David

    2-3 Restore A Deck Stain strippers.
    1 Restore A Deck Brightener
    7-10 Gallons of TWP for 2 coats.
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    Brian Steyer · 08/03/2015
    we are residing our house in WI with cedar siding. There is 2600 sq feet of siding to stain and we going to stain both sides of the siding before installing it on the house. Should we use the 100 or 1500 and how much stain will should we get?

    Thank you
  • We will reply to your comment shortly
    David Witte · 08/03/2015
    I have about 840 SF of Cedar deck to strip, restore, and stain. The deck is 5 years old. The wood is in good condition. The previous stain was a Sikkins Oil based stain for decks. What products do I need and how much do I need of each? Thank you.

    David
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    TWP Stains · 07/22/2015
    F:
    I have a 21,876 square feet of fence to stain. How much of the TWP 101 should I purchase to cover this area? If it helps, the panels are full cedar and the rail are pressure treated pine.

    Thx,

    For two coats applied wet on wet, you will need about 200 gallons. If you only do 1 coat it would be about 140 gallons. This can vary about 10-15% depending on the porosity of the wood, wood type, application method, etc.
  • We will reply to your comment shortly
    F · 07/21/2015
    I have a 21,876 square feet of fence to stain. How much of the TWP 101 should I purchase to cover this area? If it helps, the panels are full cedar and the rail are pressure treated pine.

    Thx,
  • We will reply to your comment shortly
    TWP Stains · 07/15/2015
    John Adelizio:
    I have a older cedar deck, I removed most of the old Behr stain(transparent),but there is still areas mostly verticle wood that has dark areas. The horizontal decking is clean. I dont want to use a power washer anymore because it is damaging the wood.
    Should I use the Gemini or the Restore stripper?

    You will nee the Restore Stripper but you will need to pressure wash after applying. Apply Restore Brightener when done.
  • We will reply to your comment shortly
    John Adelizio · 07/15/2015
    I have a older cedar deck, I removed most of the old Behr stain(transparent),but there is still areas mostly verticle wood that has dark areas. The horizontal decking is clean. I dont want to use a power washer anymore because it is damaging the wood.
    Should I use the Gemini or the Restore stripper?
  • We will reply to your comment shortly
    TWP Stains · 07/12/2015
    Catherine Gallegos:
    We will be painting our split rail fence. The length is 356 feet and the height is 4 feet. How much paint will we need for this project?

    Thank you,
    Cathy

    For both sides and two coats, about 15-25 gallons. These are hard to judge as they are not "solid" fencing and a lot of gaps between the boards. Hence the big difference. Start with 10-15 gallons and you will know the first few hours how much more you will need to buy.
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    Catherine Gallegos · 07/11/2015
    We will be painting our split rail fence. The length is 356 feet and the height is 4 feet. How much paint will we need for this project?

    Thank you,
    Cathy
  • We will reply to your comment shortly
    TWP Stains · 07/06/2015
    Bill luisi:
    I want to try the deck revive product on my railings first and give the product one fill winter summer to see how it hold up. It can get as cold as -27 F in winter and as hot as 100 in summer, and I get a tremendous amount of sun.

    I want to coat the upper railing which is 2x6 and the lower railing which has ballusters. So I ould only be coating the railing uppers, not the ballusters. How many linear feet will the product cover 2 coats?

    Coverage is based on sq. feet, not linear feet. Please convert to sq. feet.
  • We will reply to your comment shortly
    Bill luisi · 07/06/2015
    I want to try the deck revive product on my railings first and give the product one fill winter summer to see how it hold up. It can get as cold as -27 F in winter and as hot as 100 in summer, and I get a tremendous amount of sun.

    I want to coat the upper railing which is 2x6 and the lower railing which has ballusters. So I ould only be coating the railing uppers, not the ballusters. How many linear feet will the product cover 2 coats?
  • We will reply to your comment shortly
    TWP Stains · 07/02/2015
    mikerip:
    I applied TWP stain to my deck floor last year, and an unexpected rain storm came through before the stain dried that resulted in some blotchy areas where there is little to no stain. Should I strip the floor completely and start anew ... or should I try to apply a maintenance coat over the existing? Thanks.

    Prep with the Gemini Kit and reapply.