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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    TWP Stains · 05/08/2015
    George Engel:
    I am staining a cedar fence. Can I use a HVLP sprayer to apply TWP 1500? If so. What would be the idea spray tip size?

    You can use this sprayer. Not sure on the tip but wider fan is better.
  • We will reply to your comment shortly
    George Engel · 05/08/2015
    I am staining a cedar fence. Can I use a HVLP sprayer to apply TWP 1500? If so. What would be the idea spray tip size?
  • We will reply to your comment shortly
    TWP Stains · 05/07/2015
    Lyne pobega:
    Good Morning,

    I had a white cedar fence with pressure treated pine posts installed last Septmber and now it's time for protection. My fence measures approx 85ft X 6ft. What color stain would be best to keep my fence color yet offer greatest protection. Your calculator is geared towards decking which requires coating on one side only, therefore can I only stain one side of my fence? My fence is extremely difficult to access on opposite side and i don't care if color grays on opposite side. Please

    We answered this in the previous questions.
  • We will reply to your comment shortly
    Lyne pobega · 05/07/2015
    Good Morning,

    I had a white cedar fence with pressure treated pine posts installed last Septmber and now it's time for protection. My fence measures approx 85ft X 6ft. What color stain would be best to keep my fence color yet offer greatest protection. Your calculator is geared towards decking which requires coating on one side only, therefore can I only stain one side of my fence? My fence is extremely difficult to access on opposite side and i don't care if color grays on opposite side. Please
  • We will reply to your comment shortly
    TWP Stains · 05/07/2015
    Lyne pobega:
    Good Morning, I had a white cedar fence installed (approximately 80 ft X 6ft) last September, Your calculator to estimate how much is needed is for a deck which requires stain to be applied to the top surface only. I wanted to ask if I had to apply stain on both sides of my fence or can I just apply to the side facing me. The reason being that my fence is built on the edge of a retaining wall which has a 10 ft drop on one neighbors side and my other neighbor may not allow me access to his property. Also, which stain would give protection but
    keep color of fence closest to its natural color. I live in Staten Island, NY which has brutal winters.
    Thanks for your help.
    Lyne Pobega
    718-986-4192

    Look at the TWP 1530 Natural or the 1515 Honeytone. Up to you if you want to do both sides but most people will.
  • We will reply to your comment shortly
    Lyne pobega · 05/07/2015
    Good Morning, I had a white cedar fence installed (approximately 80 ft X 6ft) last September, Your calculator to estimate how much is needed is for a deck which requires stain to be applied to the top surface only. I wanted to ask if I had to apply stain on both sides of my fence or can I just apply to the side facing me. The reason being that my fence is built on the edge of a retaining wall which has a 10 ft drop on one neighbors side and my other neighbor may not allow me access to his property. Also, which stain would give protection but
    keep color of fence closest to its natural color. I live in Staten Island, NY which has brutal winters.
    Thanks for your help.
    Lyne Pobega
    718-986-4192
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    TWP Stains · 04/24/2015
    Prep after the sanding with the Gemini Restore Kit. One coat this time after sanding. About 5 gallons.
  • 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.
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    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.