Rain Before or After TWP – Dry and Curing Time of TWP

by TWP Stains

Rain Before or After TWP – Dry and Curing Time of TWP

Protecting your exterior wood surfaces with TWP (Total Wood Preservative) is a project that most homeowners can complete themselves. TWP will preserve the wood’s natural beauty and shield it from the harsh elements. The user-friendly formula is easy to apply and maintain but care should be taken when considering when to apply the stain. Weather can be a tricky and create problems. Most of all rain should be avoided at all costs.

A perfect forecast for staining would be 1-2 days with no chance of precipitation. Prior to staining, the wood should air dry for 24-48 hours after it has been cleaned. If it rains within that window soaking the wood again then wait an addition 1-2 days before staining. It is important the wood is dry before staining otherwise moisture could be trapped under the stain creating an environment for mold and mildew.

In most situations, TWP will take approximately 4-12 hours to dry but it will take longer to fully cure. Check the forecast and confirm that rain is not expected for at least a day or two. Once the conditions are right and the wood is completely dry you can begin staining. It should not rain within 12 hours of applying TWP stain to any exterior wood surface. A quick light rain will most likely not harm the stain if it has already been absorbed. A heavy rain however may leave separation circles on the surface and ruin the finish.

If an unexpected rain does ruin your TWP finish it may be necessary to sand or strip the stain off and recoat it. This would be unfortunate and obviously an extra expense so plan your staining project around any potential rainstorms for the best results. When applied properly under the right conditions, TWP will provide a long lasting beautiful finish that can be enjoyed and maintained for many years to come.

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William A Brockmann
William A Brockmann
2 months ago

I brush applied TWP rustic stain to rough sawn Douglas Fir timbers for a Pavilion that my company is building for a customer. Stain was applied in the shop, in which the temperature is maintained at 60 degrees F. After allowing the timbers to sit for roughly two weeks laid out on the shop floor, we went to bundle the timbers for shipment, and the stain was still wet to the touch in some locations. I would like to know how long is needed to allow the stain to fully cure.

Dave
Dave
6 months ago

Rain is expected within 16 hours after I finish staining using the Semi-solid line. Other instructions on here say 12 hours is fine before rain. Does this also apply to the Semi-solid line even though the can says stain 48 hours before rain? It will be in low 50’s during day and 45 at night before rain next day.

Dave
Dave
6 months ago
Reply to  Dave

Addl context. Wood is stripped and sanded and only putting down one coat. 

Mickael
Mickael
6 months ago

Hi, plan is to stain this Friday when temp is 65. No rain forecast but the temperature will drop to 45 Friday night and back up again to 51 Saturday. Then it’s not supposed to go higher than that anymore. Can I still stain? 

Katie
Katie
7 months ago

Are there temperature constraints to curing?

Theresa
Theresa
8 months ago

I have cleaned my deck and it has had no rain for 2 days.  Unfortunately, un-forecasted rain is expected for an hour or 2 today around 6 pm.  After today, rain is forecast late on the 4th day.  Want to get the stain on this week because temps drop next week and there is not a stretch of consecutive days without rain.  (1) How can I tell if the wood is dry enough to stain? I can probably let the deck dry before staining about 12- 15 hours, if I start tomorrow.  (2) What is the minimum time before rain after I stain? I have seen 12 hours depending on temperature.  My nights are mid 40’s and days 60 to 70.

Derek
Derek
1 year ago

I just finished staining my pool deck. Can my family get on the deck tomorrow to get in and out of the pool? It will have been over 24 hours at 8 a.m tomorrow or should I wait longer? The deck is in direct sunlight 

Sue
Sue
1 year ago

I applied your 100 series stain to a cedar pergola that was built last July. I did the pre-work getting it ready and only applied one coat of stain. Does the initial one coat of stain tend to need to be recoated sooner than old wood since it doesn’t soak in as much? Thanks

Dick
Dick
1 year ago

Applied two coats of your deck stain yesterday.  About 3-4 hours later received light on/off showers (maybe .2″) over about 3-4 hours.  Used a leaf blower to blow off the collected rain on the deck surfaces.  For the most part the deck looks like it survived the water as I look at it today.  There are some boards that appear slightly lighter than others as those are the areas that also receive more sun and were lighter even before applying TWP.  Can I apply another thin coat over the entire deck (or only the lighter colored boards) to try to minimize the slight color difference in the finished product?

Robert
Robert
1 year ago

I had a contractor come and to stain my cabin this week.  It rained the day before they started.  On day one they arrived and pressure washed the exterior and sprayed borate chemical. Day two they sanded everything.  No rain during those two days.  Day three they applied the first coat of stain (twp 200 California cedar) and later that evening probably no more than 1-2 hours they finished there was a light rain that went on for about 4 maybe 5 hours.  The following day they applied the second coat of stain and same thing it starting raining no more than 1 hour after they finished the second coat, it very well could have started before they even finished.  This was a bit heavier rain and continued for 12+ hours.  Should I be concerned that this is going to affect the outcome of my stain and what could be some indicators I can check/present to contractor if there are issues.  

Wayne
Wayne
1 year ago

What is the proper procedure for a maintenance coat? I want to do a maintenance coat on my rough sawn cedar gazebo posts that currently have TWP 101 on them. Finish is in pretty good shape.  Can I clean, brighten and stain without removing the old coating of TWP 101? (Last time I pressure washed after cleaning and it took the wood back to almost new where I had to start from scratch.) 

Thomas
Thomas
1 year ago

Two questions. After using cleaner and brighter, I’ve run into a stretch of bad weather. How long can I wait on applying the stain before I would have to clean again? Is it okay to apply stain with daytime temperature around 60 deg but nighttime temp in the 40 degree range?

Al Guler
Al Guler
1 year ago

Can you stain wood one way after its dry can stain again up and dawn?

Joel
Joel
1 year ago

My fence is cleaned/brightened/sanded and ready. I tarped it before it rained last night. This morning some of the plastic sheeting showed moisture underneath, but the wood looked dry. Not sure if this is a sign of the wood giving off moisture and condensing inside the tarp (it did rain 0.1″ 2-3 days ago), or a sign of the damp air overnight.

1. Given what I know, how long would you wait to stain?

2. Overnight dew is common right now. Would any presence of morning dew on the wood push us back another 48 hours?

3. On a night with possible dew, would a tarp be enough to let me stain the following day?

Vadym
Vadym
2 years ago

So much for meteorologists. Not was suppose to rain and here we go. As soon as i applied 2 coats of stain it start to drizzle. It was small drizzle but laster around 5h. Now i am wondering what is going to happen. Checked today in the morning and looks like stain tried to repel rain drops, but you can see some weird black spots. 
what i am suppose to do once it will be dry? Do i have so strip and sand it again, or i can apply 3-rd coat on top ? Please, help?? 

Vadym
Vadym
2 years ago
Reply to 

So today was sunny and i got home to investigate. Main area looks so what ok, only i have problem that 23 of area looks darker then other one(you can see on picture is on left side is lighter). Big problems occurred on the stairs and small “hallway” , you can see some discoloration.
My thinking is taking 60 grid sandpaper and sand those boards that got discolored by hand and touch up with stain. What do you think about that? Thank you for your time, really appreciate any help. Want to make it look good after all cleaning, sanding, staining.. 

Evan
Evan
2 years ago

I stained my deck on Friday morning with two coats of 1500 honeycoat, it looked great. Around 3-4 hours later, a totally unexpected storm came in an poured for about an hour. Wasn’t on the forecast at all. 

I allowed everything to dry for 48 hours, it doesn’t look bad but I can tell it’s not perfect. Much of it looks good but there are ares that look faded and a few that even look like maybe we’re oil pooled and are a little off colored. I added a few pics below. Can I get by with applying a 3rd coat or at least just filling in the areas that are lighter / touch ups?  I know stripping and sanding is probably ideal but I just won’t have the time to do this and stain again. Any advice would be great. 

compare TWP stains
1 year ago
Reply to 

So do you mean that a 2nd light coat can be reapplied in 9-12 months *without* required strip and brighten?

compare TWP stains
1 year ago
Reply to 

“Lightly” clean – with just some soap and water you mean?

Missmosey
Missmosey
2 years ago

I have a deck that already had been stained 2 yrs ago with one coat 5102.  Contractor just did 2 coats yesterday on top half the deck after it had been power washed last week.  It rained last night for a few hours.  So he should wait 24 hours to do the rest?  What about the top of the deck already done can it be walked on yet and should I blow off the rain sitting on the deck if I can walk on it?  Can furniture be placed on it?

Missmosey
Missmosey
2 years ago
Reply to 

So these are water spots from a freak shower.  Contractor wanted to send and restain.  I thought maybe scrubbing might work.  Any suggestions?

Lee
Lee
2 years ago

Since my deck professional used a 100/200 series blend when he first treated my new deck a year ago, I have several questions as I am getting ready for my second application.
1. Does the deck need to be stripped and brightened before re-applying or switching to the 100 series?
2. If I switch to the 100 series this time around, will my future re-applications require stripping/brightening before subsequent applications?
3. My deck professional wanted to do the second application one year after the first one since it was new wood. Then he suggests doing subsequent applications every 2 years.  I had significant fading after the first application.  If I switch to the 100 series instead of the 100/200 blend, will the 100 series protection hold up as well for 2 years as the 100/200 blend would?

Lee
Lee
2 years ago
Reply to 

Perfect.  One last question.  IF, my deck professional talks me into repeating the 100/200 blend (we do love the color the blend created), does the deck need to be stripped and brightened to repeat what I already have i.e. the 100/200?

Jaclyn
Jaclyn
2 years ago

Finished staining my deck at noon on Saturday and it began sprinkling with a 4% chance at 6am on Sunday.  Water is pooling and the weather is still unpredictable and calling for a 50% around 5pm.  Is there anything I should do in the short term? Used TWP 1520 Pecan

Jaclyn
Jaclyn
2 years ago
Reply to 

Fingers crossed ?  thanks!

Regina
Regina
2 years ago

I have a deck with former TWP stain and removed a hot tub 10 months ago that left an 8′ octagon of decking without any stain.  Can I stain the area with no stain first with one or two applications before going over the entire deck with the final coat to try and achieve an even coloration?

Leah
Leah
2 years ago

I completed using the cleaner and brightener yesterday and now the forecast has changed.  I’m not sure I’m going to have a window for adequate drying and staining times w/in 14 days.  What is the minimum drying time after cleaning and brightening?  If I have to wait more than 14 days after using the cleaner / brightener what are my options/steps?  

Justin
Justin
2 years ago

Rain is expected in the forecast but I’m staining my screened porch. If it’s windy enough a little rain might get on the edges but otherwise stays dry. Should I stain or wait? Is it the water itself or the humidity that’s the issue?

Lee
Lee
2 years ago

My staining professional applied a blend of 100/200 series TWP stain.  We started getting rain about 40 hours after the staining was completed and has rained off an on for the past 3 days.  5 days after completion, I can still rub off a little bit of stain on a white paper towel.  Did the rain hurt the curing process?  So far I don’t think I can see spots on the deck, but it does look slightly lighter in color than when the stain was applied.  It is my first time with TWP so I’m just looking for your opinion.  Did I make a mistake using a blend of 100/200 series?

Lee
Lee
2 years ago
Reply to 

2 questions:Is there paraffin oil in both the 100 and 200 series?  Since I just had my deck finished with a blend of 100/200 series and it is taking a long time to cure, my next staining I would like to use 100 series.  Is it ok to use 100 series the next time or do I need to stay with the same blend since that is what I started with on my new deck?

Lee
Lee
2 years ago
Reply to 

It’s about time for my second application of TWP (one year after my first stain applied to my new deck).  I am still confused about series 100 compared to 200.  In the TWP website description, it says 200 is used for Decking.  My professional used a blend of 100 and 200 series stains, yet you have advised that 200 is for shakes and shingles.  Is it the blending you object to, or do you just not recommend using 200 for decking even though your website says it can be used on decking.  By the way, i appreciate how you all answer all of our dumb questions!

Lee
Lee
2 years ago
Reply to 

You are right about the lengthy dry/cure time.  I would say it was at least a month before it would not rub off on a rag.

Gerry
Gerry
2 years ago

I stained my deck last evening finished at 8:30 it rained unexpectedly after 4 hours wanted to apply a second coat today can’t  because it is wet it will be sunny today can I apply a second coat tomorrow?

GERRY
GERRY
2 years ago

I stained my deck yesterday finished at 8:30 pm it rained unexpectedly  about 4 hours later does that mean it will peel immediately or over time

Juan Noriega
Juan Noriega
2 years ago

I sanded my deck and had unexpected rain. If k allow to dry for for 48 hours can i apply stain or do I have to sand again?

jb
jb
3 years ago

i dont really have a choice to stain out of sunlight unless it is night time. help?? literally sun up to sun down on the deck. the only cloudy day in the next 5 is on saturday, friday has a 30% chance of showers. I am assuming my stain day is sunday due to that right now.. not cloudy

jb
jb
3 years ago

im fighting the mid 90s this week but no rain for 5 days. 90 seems to be the limit so stain in the morning and night. But – does staining in the am when it is 80 make an issue when it heats up to 94 during the day and the sun beats on the deck?  since it technically wont be done curing yet?

Nick Saucier
Nick Saucier
3 years ago

I stained my deck on Thursday, I did a couple coats on the banisters and railings etc, but only got one coat on the floor. Can I apply a second coat this Sunday a few days later, when there has been rain in between the dates? (Been respecting drying times etc)

CJ
CJ
3 years ago

We used the TWP 200 California Cedar this past Sunday 5/2. The deck is covered (screened porch) and it is still not fully dry (5/5). Any suggestions?

compare TWP stains
3 years ago

Year old PT Pine.  Cleaned and prepped.  Weather here, getting multiple dry days is a major challenge.  No rain the past two days, but I’m racing the forecast (chance of rain late tomorrow evening) so started staining today at about 8:30 am.  Using 1500 Black Walnut stain.  At 9:30 am I’m about 2/3 done and have stopped.  It’ll be 80’s and totally clear today and during the day tomorrow, and deck is entirely in direct sunlight.  
One complication and one question:

I have one large piece of furniture (a fire pit) that I can’t really remove from the deck.  Is 8-10 hours enough drying time to walk on fresh stain and set fire pit on it (it has small feet)?
Also, still have some touch-up that needs done in board gaps.  Do I try to get those done today or wait until I have another 3-4 day window (if one ever comes)? 

Paul Agid
Paul Agid
3 years ago

I’ve used TWP every other year since the deck was built 10 years ago. This year I had it done for me, deep cleaning as directed, and two coats as directed. In A few areas that do not get direct sun The deck is not yet dry after five days. One place in deep shade is still quite wet. Should I wipe these areas with a rag to remove wet zones?

Paul Agid
Paul Agid
3 years ago
Reply to 

Thanks!

Anthony Strickland
Anthony Strickland
3 years ago

If it rains shortly after staining using TWP 100 series stain, can you use a leaf blower to blow off the water spots once it stops raining

Melissa wetzel
Melissa wetzel
3 years ago

Can I stain at night in Louisiana?

Liisa
Liisa
3 years ago

Hello, I refinished a friend’s deck… Sanded, Gemini cleaner/brightener, waited for dry weather stretch. I finished staining and about 5-6 hours after finishing a stray rain came through with 0-10% chance of rain. :( Now there are spots. Can I try to reapply a very light coat now or should if I waited until spring would that be better and cover spots evenly? I’m attaching a couple photos before it rained taken at sunset and a couple pics two days later after it’s dried.

Tarrah
Tarrah
3 years ago

Here are the photos with the deck completely dry. We stained on Saturday, July 11th. It rained 6 hours later and has rained every day since – non-forecasted pop-up showers.

I can tell we need to wipe down some of the shiny parts with the mineral spirits but what can we do about the water damage in the photos attached?

Louisa Piccione
Louisa Piccione
3 years ago

Used twp 1500 stain hired someone and it rained that night said he had to scruff up to reapply and I saw him using putty knife gouging the deck…do the water spots go away

Louisa Piccione
Louisa Piccione
3 years ago
Reply to 

There are giant spots

Louisa Piccione
Louisa Piccione
3 years ago
Reply to 

With 120 grit?

Louisa Piccione
Louisa Piccione
3 years ago

Follow up pictures for above

Tarrah
Tarrah
3 years ago

Sorry about that was typing on my phone – meant to say that every day there have been random pop-up showers that aren’t forecasted and I am so worried about what this will mean for the deck. I cannot get a dry day for the life of me! Today it finally dried out as much as it has since Saturday night (the night after we stained) and now it is raining again. I truly hope we don’t have to strip and start over.

Tarrah
Tarrah
3 years ago

We live in NC and stained the deck yesterday with TWP 1500 and finished around 530p. Zero rain in the forecast for the next 3 days but alas, a pop-up storm hit last night at 2am. It was brief but we have pools of water on the deck today. Should we allow it to just air dry or should we try to sop up with towels? Sweep the water off?

Tarrah
Tarrah
3 years ago
Reply to 

thank you! We had another non-forecasted quick 5 minute shower this afternoon before everything was dry back there. How long do you recommend waiting after application to move things like a grill and seating back on the deck (knowing we’ve had 2 short rains)?

Tarrah
Tarrah
3 years ago
Reply to 

Here is a photo of the deck this morning- lots of water blotches but it’s not completely dry. Do I wait until completely dry and then send another photo? I’m so worried I will have to strip and re-do with my husband deployed ay yay yay!

Tarrah
Tarrah
3 years ago
Reply to 

Thankyou-I’mquitenervousastherainkeepscomingdailyinshort burstswhilenot beingforecasted. I trulyhopeitisnot goingtoruinthestain.

Jack
Jack
3 years ago

I have a gallon of TWP100 Series from June 2017 tightly sealed. Is it still good to use this year

Oliver
Oliver
3 years ago

Cleaned, stripped and brightened deck, 2 coats of TWP stain 10 days ago and 90 deg weather since, took a few days to dry over the last weekend, looked good but maybe in some areas too much stain. Today rained heavily and stain has washed off in some areas…what to do? Wait and recoat on top on those areas?

Jonathan
Jonathan
3 years ago

We live in MN and I stained my deck 72 hours ago with 101. It is still tacky? We have had very humid hot weather. I just put a fan in there to help dry it out. Any other suggestions?

Jeri
Jeri
3 years ago

If I power wash my mahogany deck, do I need to sand it before I can stain or do I need to sand it after it dries and then stain? I am getting conflicting info on this question. Thanks, jeri

Stain-newbee
Stain-newbee
3 years ago

Staining our deck took longer than expected and we just finished this evening. Tomorrow, early morning, rain is to begin and hang around for multiple days.
we know the deck stain was dry, but realized it’s not completely cured.
we made decision this evening to cover entire deck with multiple tarps snd plastic covering to keep it from getting (as) wet.
was this okay? Better than sitting in rain for 3-4 days? Wasn’t sure if the tarp coverings will affect the curing process with lack of air flow etc?

compare TWP stains
3 years ago

Used TWP100 on the railing yesterday morning with hot 85 degree sun on it most of the day. Finished the decking this morning and it has had the same some most of today, but support to rain between 5:30 and 7:30 this evening. Should I cover it with plastic and then remove it after the showers and blow off the water? Thanks.

compare TWP stains
3 years ago
Reply to 

Thanks! It rained for about 2 hours. I didn’t blow the water off afterwards and everything was fine. Going to rain again tonight but not going to worry about it.

Kim
Kim
3 years ago

I stained my deck last night and wrapped up by 9:30pm. There was no rain in the forecast. Woke up this morning to a wet deck. Is there anything I can do? Should I wipe it down?

Kim
Kim
3 years ago
Reply to 

It seems ok. Only some slight splotch. What is the process for a recoat? Do I need to wait a certain period of time and just apply a 2nd coat on?

Andy Smith
Andy Smith
4 years ago

Here are some pictures after deck dried.

compare TWP stains
4 years ago

Applied two coats of TWP 1500. Finished around 6 pm. At midnight there was a large thunderstorm with heavy rain. The next day the deck was covered with water so the stain repelled it, but in many spots the rain washed off the stain so the finish now looks terrible. What do I need to do? strip the whole thing and start over or is a lesser solution possible to restore the finish?

Richard
Richard
4 years ago

How long should I wait to apply TWP stain to premium pressure treat ed lumber from Lowe’s.

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