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
Coverage Rate for TWP Stains
The specified coverage rate for TWP is 150-200 square feet per gallon for the first coat. Second will apply at 200-300 per gallon. This averages to about 100-125 sq. feet per gallon for 2 coats wet on wet. From this, and from measuring the surface you can calculate how much stain you need. For more aged wood you could easily factor in some extra stain. On newer wood that is still smooth and dense, you probably are not going to use as much.
For maintenance coats you are not going to use near as much stain as you did initially staining bare wood. There are just way too many variables to know the exact coverage rate of TWP for sure. There is really no way of knowing exactly how much stain you will need. It is better to buy more than you need than to not have enough. You can always save left over stain for next time. TWP has a shelf life of 1 year if opened and 3 years unopened as long as the can is properly resealed.
If you have questions, please ask below.
Please explain math in this statement of yours:
“The specified coverage rate for TWP is 150-200 square feet per gallon for the first coat. Second will apply at 200-300 per gallon. This averages to about 100-125 sq. feet per gallon for 2 coats wet on wet.”
How did you arrive the average of 100-125 sq. ft., but not 175-250 sq. ft per gal each coat?
You need to treat each coat individually, not the average of the two.
Example Deck that is 500 Sq feet:
The first coat applies at 150-200 sq. feet per gallon. You would use 2/3 (a little over 3 gallons) of the 5-gallon pail.
The second coat applies at 200-300 sq. feet per gallon. You would use about 1/3 (1-2 gallons) of the 5-gallon pail.
*When done, you used around 5 gallons for 500 Sq. feet or around 100-125 sq. feet per gallon for the 2 coats needed.
I see your logic. Actually, your example would produce 85-120 sq ft/gal coverage, 2 coats, accordingly for the lower coverage numbers of 150 and 200 sq. ft, and for the higher coverage numbers 200 and 300 sq. ft.
One can calculate the coverage for 2 coats by using this formula:
2 coats coverage = Cov.1st x Cov.2nd / Cov.1st + Cov.2nd).
Check it out.
Then, divide your area into that number, to calculate total gal qty. of the needed material.
Wow, that was quick thanks, now where do I find a TWP-100 dealer in Syracuse, NY. I can’t find a search box, on your site, to locate local distributors/vendors in my area
[quote name=”James Plath”]Hello….I need to stain a new cedar fence using your 1500 Series stain that is approximately 120 feet long by 6 feet high. It will be stained on both sides. How many gallons of stain would you recommend I purchase?
Thank you![/quote]
Sounds like you have roughly 1440 sq. feet total for both sides. About 15 gallons will cover for two coats.
Hello….I need to stain a new cedar fence using your 1500 Series stain that is approximately 120 feet long by 6 feet high. It will be stained on both sides. How many gallons of stain would you recommend I purchase?
Thank you!
[quote name=”Lonnie Bartel”]Building a brand new cedar fence that is 6′ tall and total length of 300′ long.How much TWP 1500 would I need to treat both sides?
Thanks[/quote]
Total sq. footage is about 3600. For two coats applied “wet on wet” you would need about 30-35 gallons. If you want to apply just 1 coat, you would need roughly 20-25 gallons.
Building a brand new cedar fence that is 6′ tall and total length of 300′ long.How much TWP 1500 would I need to treat both sides?
Thanks
[quote name=”MaryC”]I have 2400 Sq feet of siding to treat. How much TWP 100 do I need?[/quote]
For two coats applied wet on wet, about 20-25 gallons.
I have 2400 Sq feet of siding to treat. How much TWP 100 do I need?
[quote name=”David Latch”]I do not mean to insult anyone, but what is the difference between Gemini RAD and store bought cleaner/brightner from companies like Behr and Olympic?[/quote]
Their products are not as effective and are bleached based. Ours are biodegradable, prep better for the TWP, and concentrates,
I do not mean to insult anyone, but what is the difference between Gemini RAD and store bought cleaner/brightner from companies like Behr and Olympic?
[quote name=”Shane ogle”]I have 3400 square feet of wood fence/deck to be covered. How many gallons of twp 1500 do I need for 1 coat?[/quote]
20-25 Gallons.
I have 3400 square feet of wood fence/deck to be covered. How many gallons of twp 1500 do I need for 1 coat?
[quote name=”musky”]I just pressure washed my deck which had that HORRIBLE Rustoleum Restore on it!!Some of the boards are greyish while others are lighter. The deck is in full sun most of the day so I need a stain to withstand the sun, won’t chip,peel or fade AND easy to apply. I like the 1530 series of the “Natural Carmel/Golden tone.[/quote]
You must remove 100% of the Rustoleum if you want to use a penetrating semi-transparent stain like the TWP. If applied properly and prepped properly, it will not peel or chip. Fades through the years and can be cleaned and reapplied as needed.
I just pressure washed my deck which had that HORRIBLE Rustoleum Restore on it!!Some of the boards are greyish while others are lighter. The deck is in full sun most of the day so I need a stain to withstand the sun, won’t chip,peel or fade AND easy to apply. I like the 1530 series of the “Natural Carmel/Golden tone.
[quote name=”A Rains”]Going to be staining both sides of. 6′ fence. 190′ total length. How much stain do I need?[/quote]
20-25 gallons for two coats applied wet on wet.
Going to be staining both sides of. 6′ fence. 190′ total length. How much stain do I need?
[quote name=”Judy Sursely”]new cedar fence due to F-0 tornado.Fence man said to use a good quality transparent stain. have approximately 150’fencing. How much and which stain would be best to use on the new fencing? Where can i buy, other than order, we will be going to Michigan last of June, could stop and pick up if on our route.[/quote]
You can order online or stop at store in MI to pick up. Need a total sq. footage of fence? Are you doing both sides?
new cedar fence due to F-0 tornado.Fence man said to use a good quality transparent stain. have approximately 150’fencing. How much and which stain would be best to use on the new fencing? Where can i buy, other than order, we will be going to Michigan last of June, could stop and pick up if on our route.
[quote name=”Kamilah”]Hi,
I have a one year old cedar fence. How long should I expect one coat of twp 1500 to last before I need to paint again? Do you offer and garuntees?
Thanks[/quote]
TWP stains last about 3-6 years on vertical wood like a fence.
Hi,
I have a one year old cedar fence. How long should I expect one coat of twp 1500 to last before I need to paint again? Do you offer and garuntees?
Thanks
[quote name=”Les Sutak”]Hello I was looking at your product and was wondering if I put on the TWP 100 and in a few years the product was not available. Would I be able to put the TWP 1500 over it with just a cleaning?
Thanks
Les[/quote]
Yes with prepping of the Gemini Restore Kit.
Hello I was looking at your product and was wondering if I put on the TWP 100 and in a few years the product was not available. Would I be able to put the TWP 1500 over it with just a cleaning?
Thanks
Les
[quote name=”Lovell Duggan”]Can this be used on a newly installed cedar fence? We live in New Orleans, LA.
Thanks, Lovell Duggan[/quote]
Yes. See this about new wood:
http://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/
Can this be used on a newly installed cedar fence? We live in New Orleans, LA.
Thanks, Lovell Duggan
[quote name=”Dan Roeder”]I have approx 373 Ft of cedar hand railing with 38 inch high posts.I have black metal spindles. Decking is composite. Hail removed previous stain. So I will need to strip old finish. How much stripper will be needed. And how much of the TWP 100 stain will I need. Thanks.[/quote]
Hello, what is your total sq. footage of wood? Need to add the railings and the posts together.
I have approx 373 Ft of cedar hand railing with 38 inch high posts.I have black metal spindles. Decking is composite. Hail removed previous stain. So I will need to strip old finish. How much stripper will be needed. And how much of the TWP 100 stain will I need. Thanks.
[quote name=”Paul Murphy”]Hi
I have 352 sqft of pine shed outside walls
3 years ago did full strip, restore and 2 coats of wet on wet of 1500, used about 5 gallons
Want to do a maintenance coat now, restore and if it can absorb 2 coats of wet on wet
Should I expect to use the same amount of product as 3 years ago?[/quote]
Yes you will need a full reapplication after 3 years. Prep with the Gemini Restore kit as well.
Hi
I have 352 sqft of pine shed outside walls
3 years ago did full strip, restore and 2 coats of wet on wet of 1500, used about 5 gallons
Want to do a maintenance coat now, restore and if it can absorb 2 coats of wet on wet
Should I expect to use the same amount of product as 3 years ago?
[quote name=”Cheryl LaPointe”]Hi! Looking at purchasing the 1500 line for s new construction log home. We need stain for approximately 1500 square feet. How much stain do you recommend purchasing? Thanks![/quote]
1500 sq. feet of siding? About 10-15 gallons for two coats applied wet on wet.
Hi! Looking at purchasing the 1500 line for s new construction log home. We need stain for approximately 1500 square feet. How much stain do you recommend purchasing? Thanks!
[quote name=”Jerry Schramek”]I live in Ontario and will be going to buffalo NY, where can I purchase your TWP 1500 series stain and your restore a deck products[/quote]
We are an online dealer and personally do not have dealers in Buffalo, NY.
I live in Ontario and will be going to buffalo NY, where can I purchase your TWP 1500 series stain and your restore a deck products
[quote name=”PHarris”]We have 230 feet of 6 foot cedar fence and 10 feet of 4 foot cedar fence that we are planning on staining with TWP 1500. Is 15 gallons the correct estimate for the amount of stain needed to stain both sides of the fence?[/quote]
230 linear feet? If that is what you have then the total sq. footage is about 2900 sq. feet for both sides. That means you will need 25-30 gallons for two coats of TWP.
We have 230 feet of 6 foot cedar fence and 10 feet of 4 foot cedar fence that we are planning on staining with TWP 1500. Is 15 gallons the correct estimate for the amount of stain needed to stain both sides of the fence?
[quote name=”rich difabio”]how much to ship 2 gls. to 06085 thanks[/quote]
Please add products to cart. At cart you can enter your zip code and the shipping cost will update.
how much to ship 2 gls. to 06085 thanks
[quote name=”ChgoRon”]I live in Chicago and I have new pressure treated deck, It was built last September 2015. I would like to keep the wood a light color but was to try and keep the maintenance low. The house has tan siding what stain should I use and what color do you suggest. Thanks[/quote]
Lightest tint in the TWP 1500 Series is the Honeytone. Prep first with the Gemini Restore Kit.
I live in Chicago and I have new pressure treated deck, It was built last September 2015. I would like to keep the wood a light color but was to try and keep the maintenance low. The house has tan siding what stain should I use and what color do you suggest. Thanks
[quote name=”Scott Hudson”]My deck is pressure treated pine and has been in place for 2 years i have only used a linseed oil treatment so far, which TWP stain should i use for treatment, also, the deck is approximately 700 square feet with 80 feet of hand rail and splindles[/quote]
What state do you live in? Either the 100 or 1500 Series based on your state laws. Prep first with the Gemini Restore Kit. You will need roughly 8 gallons for the 2 coats.
My deck is pressure treated pine and has been in place for 2 years i have only used a linseed oil treatment so far, which TWP stain should i use for treatment, also, the deck is approximately 700 square feet with 80 feet of hand rail and splindles
[quote name=”Jim Hayden”]My deck is new, was coated with a transparent water based sealer (Thompson) a year ago. Your calculator says it is 400 Square feet.In the fall it was washed with a bleach/water solution and is pristine except for exposure since then to the weather in Prescott,AZ.It is red wood (first cut). I intend to use the redwood semi-transparent stain/sealer – 2 coats. What kind of cleaner would I use taking into consideration that is has been exposed for seven months.Do you have local distributors?[/quote]
Best to prep with the Gemini Restore Kit. We are an online dealer and can ship this to you.
My deck is new, was coated with a transparent water based sealer (Thompson) a year ago. Your calculator says it is 400 Square feet.In the fall it was washed with a bleach/water solution and is pristine except for exposure since then to the weather in Prescott,AZ.It is red wood (first cut). I intend to use the redwood semi-transparent stain/sealer – 2 coats. What kind of cleaner would I use taking into consideration that is has been exposed for seven months.Do you have local distributors?
[quote name=”Rob Neumann”]Can we use this product on untreated wood siding? I love it on my cedar shakes.[/quote]
Yes it can work on all exterior untreated wood as long as there is not a previous coating of a different brand.
Can we use this product on untreated wood siding? I love it on my cedar shakes.
[quote name=”Lyn Dukes”]I have 800 sq ft deck with 125 running feet of railing. Deck is new with 8-10 month drying. How many gallons of series 100 do I need? I read I should put one coat first, wait several months to put second coat. Is this correct?[/quote]
Hello, please add your dimensions into the calculator above to get the amount needed. Only one coat on new wood. See here for more info on this:
http://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/
I have 800 sq ft deck with 125 running feet of railing. Deck is new with 8-10 month drying. How many gallons of series 100 do I need? I read I should put one coat first, wait several months to put second coat. Is this correct?
[quote name=”Christy Gaddis”]I am staining an covered portion of my deck that was constructed with untreated wood. I would like this to have a little shine to the finish. Can I apply polyurethane to the top? If not do you have any suggestions?[/quote]
You cannot apply a polyurethane or any shiny coating over top of the TWP.
I am staining an covered portion of my deck that was constructed with untreated wood. I would like this to have a little shine to the finish. Can I apply polyurethane to the top? If not do you have any suggestions?
[quote name=”Ken Shaffer”]When you say apply wet on wet, exactly what do you mean. If it is still wet when applying a 2nd coat, wont footprints affect the finish?
Thanks[/quote]
Please see this article:
http://www.twpstainhelp.com/twp-stain-wet-on-wet-application/
When you say apply wet on wet, exactly what do you mean. If it is still wet when applying a 2nd coat, wont footprints affect the finish?
Thanks
[quote name=”Dheer Kumar”]I have a new 500 sq ft Deck. What do I need to prepare before applying the stain[/quote]
Please see this about new wood:
http://www.twpstainhelp.com/prepping-new-wood-for-twp-stains/