Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Painting

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-27-2009, 11:40 AM   #1
Newbie
 
Join Date: Feb 2009
Posts: 22
Share |
Default

Painting Pressure Treated Wood


I did try searching and unbelievably I couldn't find an answer -= so sorry if I missed it !

How long do I have to wait before I can paint 'new' pressure treated wood ?.

I need a long lasting '1-coat' exterior paint - I was thinking of Sherwin William's Duration® Exterior Acrylic Latex ?

Any advice please ?

TIA - Stephen

stephen44 is offline   Reply With Quote
Old 04-27-2009, 04:59 PM   #2
Remodeling Contractor
 
Join Date: Dec 2008
Location: Sandy Hook, CT
Posts: 3,590
Default

Painting Pressure Treated Wood


paint is not a good choice. Best to use sikkens stain. Cabot stains are also good if you do not want to spend the money for the best. Stain will last, no paint will last. Wait at least 3-6 months. Weather conditions vary is why this time frame will vary.

Bob Mariani is offline   Reply With Quote
Old 04-27-2009, 08:13 PM   #3
Member
 
Matthewt1970's Avatar
 
Join Date: Sep 2008
Posts: 1,759
Default

Painting Pressure Treated Wood


Agreed. Stain also will not peel.
Matthewt1970 is offline   Reply With Quote
Old 04-28-2009, 04:30 AM   #4
Newbie
 
Join Date: Feb 2009
Posts: 22
Default

Painting Pressure Treated Wood


i understand the comment about stain - but this does not come in the bright colors we want for this project.

The SW paint is an outside paint and is guaranteed for 'life' - what ever that is !!! - so i'm assuming it must bond for a reasonably long tome - right ?

so my question was how long do i wait before using over treated wood - 3-6 months seems to be a consensus ? (I an in VA)
stephen44 is offline   Reply With Quote
Old 04-28-2009, 04:43 AM   #5
paper hanger and painter
 
chrisn's Avatar
 
Join Date: Dec 2007
Location: Hagerstown MD
Posts: 6,654
Default

Painting Pressure Treated Wood


The SW paint is an outside paint and is guaranteed for 'life' - what ever that is !!! - so i'm assuming it must bond for a reasonably long tome - right ?


WRONG, read the directions on the can, there is no paint that will stick to pressure treated lumber. Pay heed to the advise already given or switch to different building materials that can be painted.
chrisn is offline   Reply With Quote
Old 04-28-2009, 04:47 AM   #6
Remodeling Contractor
 
Join Date: Dec 2008
Location: Sandy Hook, CT
Posts: 3,590
Default

Painting Pressure Treated Wood


only colors that use natural pigments will last long outside. These are made with rock as the pigment. A rock is not effected by sunlight, thus these pigments also last. All synthetic pigments will not last nearly as long. Pressure treated lumber is made with southern yellow pine. This releases a lot of moisture and has a lot of movement during its life. Paint film is flexible to an extent (the one you selected anyway) but not enough for this wood. So, certain pigments in the paint tinting machine (namely the ones that are white, mustard yellow, reddish brown, chocolate brown, very very dark brown, and black) are more colorfast and opaque than the other pigments, and using a tint formula that calls for these colors will result in your getting a higher hiding paint that fades much less due to exposure to the UV light from the Sun.

Bob Mariani is offline   Reply With Quote
Old 04-29-2009, 07:46 PM   #7
Member
 
Join Date: Apr 2009
Posts: 37
Default

Painting Pressure Treated Wood


First, SW Duration Exterior has a lifetime limited guarantee which requires the use of primer on certain surfaces, treated lumber included. Also, Duration Exterior requires the use of 2 coats for the guarantee - look at the fine print, it is supposed to *hide* and *protect* in one coat (the first coat acts like primer on certain surfaces), but two coats are required. Also, the guarantee does not replace the cost of labor or paint, it just gets you some new gallons of the same stuff *if* the SW laboratory believes that paint failure was the cause of your trouble. They most certainly will not if you paint treated lumber with one coat and no primer.

Treated lumber is pressurized with the treating liquid, so over time it will leech the liquid to kill termites, protect the wood, etc. This is designed to last for several months to years. If you coat the wood with paint, the treating liquid will continue to leech out underneath the paint, eventually destroying the paint binder and making the paint peel right off. The same thing happens to unprimed cedar and redwood which have tannins - a resin that is leeched out of the wood which destroys coatings.

Your best bet is to leave the wood in the sun for several months until it no longer leeches liquid, and then coat. It is designed to look good for a long time, so unless you can't deal with the color just leave it. Otherwise, try coating it in an *oil* based exterior primer. Oil will try to penetrate the wood, so if there is any room left in the wood pores to make the primer stick, then it will. Otherwise, the primer will peel right off. When you can get primer to stick, you can topcoat in Duration (and since you got primer to stick, you can use 2 coats for your warranty). Personally though, I'd rather use A-100 at $30 per gallon than Duration at $60 per gallon considering the risk.

Also, is this a walking surface? If so, then rethink everything - using a standard latex, even as good as Duration Exterior, will cause you grief. Look into SW Porch and Floor Enamel (only if you can get oil primer to stick, however).
joenusz is offline   Reply With Quote
Old 04-30-2009, 04:31 AM   #8
Newbie
 
Join Date: Feb 2009
Posts: 22
Default

Painting Pressure Treated Wood


excellent information - this is what I was looking for thank you. What is A-100 and where do I get that ? I only said SW - as I had heard of it - so am definitely open to suggestions.

Thanks - Stephen

No it is not a walking surface.
Quote:
Originally Posted by joenusz View Post
First, SW Duration Exterior has a lifetime limited guarantee which requires the use of primer on certain surfaces, treated lumber included. Also, Duration Exterior requires the use of 2 coats for the guarantee - look at the fine print, it is supposed to *hide* and *protect* in one coat (the first coat acts like primer on certain surfaces), but two coats are required. Also, the guarantee does not replace the cost of labor or paint, it just gets you some new gallons of the same stuff *if* the SW laboratory believes that paint failure was the cause of your trouble. They most certainly will not if you paint treated lumber with one coat and no primer.

Treated lumber is pressurized with the treating liquid, so over time it will leech the liquid to kill termites, protect the wood, etc. This is designed to last for several months to years. If you coat the wood with paint, the treating liquid will continue to leech out underneath the paint, eventually destroying the paint binder and making the paint peel right off. The same thing happens to unprimed cedar and redwood which have tannins - a resin that is leeched out of the wood which destroys coatings.

Your best bet is to leave the wood in the sun for several months until it no longer leeches liquid, and then coat. It is designed to look good for a long time, so unless you can't deal with the color just leave it. Otherwise, try coating it in an *oil* based exterior primer. Oil will try to penetrate the wood, so if there is any room left in the wood pores to make the primer stick, then it will. Otherwise, the primer will peel right off. When you can get primer to stick, you can topcoat in Duration (and since you got primer to stick, you can use 2 coats for your warranty). Personally though, I'd rather use A-100 at $30 per gallon than Duration at $60 per gallon considering the risk.

Also, is this a walking surface? If so, then rethink everything - using a standard latex, even as good as Duration Exterior, will cause you grief. Look into SW Porch and Floor Enamel (only if you can get oil primer to stick, however).
stephen44 is offline   Reply With Quote
Old 04-30-2009, 05:06 AM   #9
paper hanger and painter
 
chrisn's Avatar
 
Join Date: Dec 2007
Location: Hagerstown MD
Posts: 6,654
Default

Painting Pressure Treated Wood


What is A-100 and where do I get that
Attached Images
 
chrisn is offline   Reply With Quote
Old 04-30-2009, 05:18 AM   #10
Member
 
Join Date: Apr 2009
Posts: 37
Default

Painting Pressure Treated Wood


Yep, SW sells A-100 too. Just remember, if oil primer doesn't stick, it's not time. Pick up a quart of A-100 exterior oil primer (confusing, I know, but A-100 comes in paint and primer). As time goes buy, put a little oil primer on the wood, and if it sticks for a month, I'd feel confident in putting on topcoat. Go back to SW, get enough A-100 oil primer and A-100 latex paint to do the job and try it out.
joenusz is offline   Reply With Quote
Old 04-30-2009, 06:37 AM   #11
Newbie
 
Join Date: Feb 2009
Posts: 22
Default

Painting Pressure Treated Wood


great - ty

so this is for some trim around an exterior kitchen. Hence since it is outside i was thinking treated wood. It is "Make Pretty" trim

You have now all made me think I should use untreated wood and then prime and paint ? - am I right ? - if so - still go the A-100 route (primer and paint) - it would at least allow me to finish the job - rather than return to it some months later.

Sorry I didn't ask my "real" question earlier -


Quote:
Originally Posted by joenusz View Post
Yep, SW sells A-100 too. Just remember, if oil primer doesn't stick, it's not time. Pick up a quart of A-100 exterior oil primer (confusing, I know, but A-100 comes in paint and primer). As time goes buy, put a little oil primer on the wood, and if it sticks for a month, I'd feel confident in putting on topcoat. Go back to SW, get enough A-100 oil primer and A-100 latex paint to do the job and try it out.

Last edited by stephen44; 04-30-2009 at 06:41 AM.
stephen44 is offline   Reply With Quote
Old 04-30-2009, 07:27 AM   #12
Member
 
Join Date: Apr 2009
Posts: 37
Default

Painting Pressure Treated Wood


Now that we know that you have a choice in treated/untreated lumber, this is a lot easier. I don't know your budget, but here we go:

If you are painting, get untreated lumber. Enough said.

A-100 exterior latex primer will be fine for all woods except redwood or cedar, both of which *require* oil based primer (A-100 exterior alkyd primer).

You have a choice in latex topcoats. Least to most durable (least to most expensive) goes like this for SW: A-100 exterior latex, Super Paint exterior latex, Duration exterior latex.

If you want this to look good at Home Depot prices, get A-100. You will likely get more years out of it than you will be living there (or your customer will remember your name).

If your customer is a stickler for durability, get them off your butt with Super Paint. With a 25 year warranty and good primer, they should be easy to keep quiet.

Depending on sales and primer costs, the least expensive option can be Duration because it is self-priming on most surfaces (including pine). At the regular prices: 2 coats of Duration @ $60 per gallon vs 1 coat A-100 primer at $30 per gallon and 2 coats A-100 paint at $30 per gallon. Don't forget to add the difference in labor for 2 coats vs. 3 coats as well. Learn the sale prices and Duration could tip in your favor.

joenusz is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
how long to let pressure treated wood dry before painting? vendejp Painting 18 08-08-2012 08:53 PM
Ready to paint the porch! Oil or latex? Leah Frances Painting 8 07-26-2011 07:29 PM
Pressure treated wood deck / cuprinol Dfigtree Flooring 3 04-03-2009 06:04 AM
Pressure Treated Wood Appearance... Melanie337 Painting 7 08-04-2008 09:51 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.