Pressure Treated or Not??

[NSBCraig]

Re: Pressure Treated or Not??

Some people still just can't read! lmao


Try reading it again (plainly list different levels of treating for different uses inc. marine) and then read what the APA says and use your brain for a bit.

The facts are your wrong Mark.

That's it and you keep giving out bad advice left and right to people to try and prove it to your self.

Give us some real evidence if you think your so right cause you've been arguing nonsense misquoting that article for over a year now!

That article does NOT support your view come up with something that does or just stop.

I mean really you find every single chance to post your wrong view to people over and over and over.

The stupidest was your post telling that guy to put PT on the inside of his transom to fix it if it can hold a jack plate "make sure you use PT though"... yeah as your voiding your warranty for sure and jury rigging your boat, completely devaluing it use the wrong thing cause you say so.

You kill me man, too funny or is it just plain sad not sure but it's sure starting to look that way.

Seriously show something that actually supports your view cause so far there is nothing!!!

 

[produceguy]

Re: Pressure Treated or Not??

Man, I feel like I am listening to my daughters argue over , whos maken the kool aid. Just kiddin guys. The truth is use what you want, if you sink then you was wrong.LOL

 

[Yacht Dr.]

Re: Pressure Treated or Not??

Yet another good read..

http://www.boatbuildercentral.com/help/APA_Plywood.htm

Nobody ever said to put the wettest wood they can get and start to use it ( I didnt ) .. Using PT has allready been documented to the max here on the forums. Knowing how to use it is just another learning curve... just like resins,gels,epoxys etc.. I wouldnt expect everyone that would recommend this that or the other to go into a diatribe about How to use it.

Properly cured PT wood would suit the needs of many if its done correctly..

Any wood with moisture in it is not a good thing..thats why its dried out before you use it ( be very carefull about using Epoxy on PT unless its dried out.. most epoxies are water soluble untill cured ).

Peace out YD.

 

[Mark42]

Re: Pressure Treated or Not??

Hee Hee Hee! Its too easy.... Pull the chain... Watch the reaction.... Works every time.... LOL!


BTW, Thanks for the pro-PT post YD!

 

[magnumdeke]

Re: Pressure Treated or Not??

From what I have read and learned and experienced with fiberglassed boats the key is sealing your wood be it stringers or deck with proper application of glass and resin, pt with glass would be more protection probally, but not necessary if glassed properly. Pt definitly a no-no for alum boat because of corrosion.

 

[BillP]

Re: Pressure Treated or Not??

Some people still just can't read! lmao


Try reading it again (plainly list different levels of treating for different uses inc. marine) and then read what the APA says and use your brain for a bit.

The facts are your wrong Mark.

That's it and you keep giving out bad advice left and right to people to try and prove it to your self.

Give us some real evidence if you think your so right cause you've been arguing nonsense misquoting that article for over a year now!

That article does NOT support your view come up with something that does or just stop.

I mean really you find every single chance to post your wrong view to people over and over and over.

The stupidest was your post telling that guy to put PT on the inside of his transom to fix it if it can hold a jack plate "make sure you use PT though"... yeah as your voiding your warranty for sure and jury rigging your boat, completely devaluing it use the wrong thing cause you say so.

You kill me man, too funny or is it just plain sad not sure but it's sure starting to look that way.

Seriously show something that actually supports your view cause so far there is nothing!!!

Really? Sit down and take an asprin before reading this. Put the dog outside too. You are basing generic info from Jamestown Dist as a reference? The only pt process that poly resin won't stick to is creosote. It's no longer used on plywood or dimensional lumber...period and that means no contest on Jamestown's generic (and much outdated) info about resins not sticking to "some" wood.

The APA papers are testing the CCA process for adhesion. They recommend using a pt product from an APA member to ensure the process is done properly...nothing else. Chose whatever grade you want.

Now about pt rotting...yes it rots after exposure has leached the treatment out of the wood. Something you are harping on but it relates to fence posts and landscaping curbs, not boats. When encapsulated in a boat there is little to zero leaching...and why Greenwood has less CCA % for their marine ply. The pt process kills rot spores and prevents them from growing again. All wood has dormant rot spores. They start growing when the moisture and temperature are right.

Why does untreated ply that is tightly sealed in glass still rot? They still have moisture in them. The moisture migrates and concentrates to the level that is ripe for spore to start growing when the temp is elevated. Voids in untreated ply are where this happens.
Glassing tight and waterproff sound good but it's not perfect.

Glues...most of the pt mfgs print they use the same glue in marine & exterior. If you don't believe it do the reseach yourself to prove it.

Now show us how replacing a transom with pt ply is voiding your warranty. That statement is laughable and I don't think you can't prove it in any way. If you CAN prove it I will apologize. While your at it, let me know how many people you know who have used common pt cdx or pt dimensional lumber in their boats...and also how many had problems. I found dozens before I used it. I also wrote Tom Colvin, marine architect, and asked about pt ply for builing a 50' sailboat of his design. He said aok but to air dry it first. He had samples on his work bench. Go ahead, call my bluff and contact him. Someone else did on the Fiberglassics site and found I'm not spouting bs.

Tell me how many sheets of ply (marine, exterior & pt cdx) you've cut up in the last 45 yrs? How many rebuilds of transoms, stringers and cores?

You are two decades behind the times concerning pt wood and it's use in boatwork. Learn the practical application of the stuff and your tune will change.

Last but not least, I didn't post earlier about the aluminum pontoon boat I had with a pt ply deck. It was cdx. Bought it new in 1996 and sold it last year. It hung over the water in a boat lift most of the 14 yrs I owned it. No rot, no delamination, no problems. The mfg (MonArk) used rubber strips over the alum to keep the pt from etching them. That worked
too.

I'll be back in a week or two so you have plenty of time to do some homework. Apologies to Mark42 should be in order.

bp

 

[Cadwelder]

Re: Pressure Treated or Not??

Bottom line is the manufacturers don't use pressure treated for a reason (and regardless of the reason) you don't need to either. And the comment about starting a riot is true so that is all I'm going to say.

 

[ondarvr]

Re: Pressure Treated or Not??

Bottom line is the manufacturers don't use pressure treated for a reason (and regardless of the reason) you don't need to either. And the comment about starting a riot is true so that is all I'm going to say.

You need to check on that fact (or assumption), I would say 80% of my customers (boat builders) use PT plywood.

 

[Cadwelder]

Re: Pressure Treated or Not??

Not assumption, at least not in the plant I worked in...and knew some from other factories that didn't use it either. Of course there are tons of makers out there so perhaps I spoke out of line. Of course what type wood to use is a major deal on here, guess I'll stay out of it for now on.....too many different opinions. What kind of plywood is like Ford or Chevy. Sorry just trying to help.

 

[ondarvr]

Re: Pressure Treated or Not??

How long ago was that? Over time more and more builders started using it, now its sort of unusual to see it not being used. There are several suppliers to the industry.

 

[ondarvr]

Re: Pressure Treated or Not??

I'm not really sure what the controversy is, if someone is going to use low cost exterior ply (CDX) or something similar, then cheap PT would perform about the same, the difference would be the actual chemicals and possible warping.

I'm not saying these are the best grades of ply to use, just that they will perform about the same, only there will be less chance of rot with PT.

 

[Cadwelder]

Re: Pressure Treated or Not??

how long ago was that? Over time more and more builders started using it, now its sort of unusual to see it not being used. There are several suppliers to the industry.

1980 - 1983. Pressure treated was around then too.

 

[D Hanny]

Re: Pressure Treated or Not??

I am sorta thinking about skipping this debate and trying COOSA board, three layers of it, glued and screwed, if and when I have to rebuild my transom.

Anyone try it yet?

 

[Cadwelder]

Re: Pressure Treated or Not??

I am sorta thinking about skipping this debate and trying COOSA board, three layers of it, glued and screwed, if and when I have to rebuild my transom.

Anyone try it yet?

I've read about it but no, I haven't used it.

 

[BillP]

Re: Pressure Treated or Not??

I am sorta thinking about skipping this debate and trying COOSA board, three layers of it, glued and screwed, if and when I have to rebuild my transom.

Anyone try it yet?

It's only a debate to those who don't get their facts straight on pt.

COOSA is expensive and not 100% structural like wood is. Building up layers of the stuff won't cure the surface compression factor. You will have to make up for the compression with heavy layups or solid structure. It's better used for cores in decks than hanging motors on.

 

[Bondo]

Re: Pressure Treated or Not??

You need to check on that fact (or assumption), I would say 80% of my customers (boat builders) use PT plywood.

Ayuh,... Is Bilgeliner, or any other Entry level Builders your customers,..??

Just sayin',....

 

[Yacht Dr.]

Re: Pressure Treated or Not??

Nautical 24
? One of Coosa?s stronger and stiffer panels
? Proven lightweight, high strength-to-weight ratio
? Density of 24 pounds per cubic foot
? Typically used as a low stress structural component
? 37% or more lighter than plywood
Nautical 20
? Coosa?s economical alternative in Nautical line
? Same superior stiffness and strength
? Density of 20 pounds per cubic foot
? Typically used as a semi-structural or stiffening component
? 45% or more lighter than plywood

Nautical 15
? Coosa?s highly-economical, super-lightweight glass-reinforced panel
? Density of 15 pounds per cubic foot
? Typically used as a filler or low-stress semi-
structural component
? 61% or more lighter than plywood


So what is ment by "semi-structural" or even "low-stress semi-structural" mean in boats ? .. For me the Coosa jury is still in session .

Its all about Applications... some apps can use this or that....some ..erm..its not such a good idea.

As a do-it-yourselfer I understand cost is sometimes an issue. But the Structural Integrity of the boat should not be a factor in cost.

If your in my position..you cant cut cost on a repair..your going to apply the Best materials ( Marine Grade Ply in this case ). The Ply isnt really that much more costwise in perspective.

Put whatever you want in your boat IMO..but be sure you use the Material for what it is .. If you have doubts..then stop and read some more. Information and proper prep/application is peace of mind .

YD.

 

[ondarvr]

Re: Pressure Treated or Not??

1980 - 1983. Pressure treated was around then too.

Pt was around then, but that was in the middle of the build it fast and cheap era, and many (most) of the boat builders hadn't been around long enough to know how 20 year old poorly covered plywood would hold up. It wasn't until some time in the 90's that more companies started using PT.

 

[ondarvr]

Re: Pressure Treated or Not??

Ayuh,... Is Bilgeliner, or any other Entry level Builders your customers,..??

Just sayin',....

Bayliner was a customer until they closed all their plants in the west, I won't comment on what they use, but it was marine ply.

On the low cost entry level boats it could go either way, but all used at least marine ply, PT is considered an upgrade.

All of my current customers in the NW use PT, I just took over the SW again and can't say what every one of them use, but all that I have visited use PT.

 

[Yacht Dr.]

Re: Pressure Treated or Not??

Bayliner was a customer until they closed all their plants in the west, I won't comment on what they use, but it was marine ply.

On the low cost entry level boats it could go either way, but all used at least marine ply, PT is considered an upgrade.

All of my current customers in the NW use PT, I just took over the SW again and can't say what every one of them use, but all that I have visited use PT.

Would you consider PT as a viable wood to use Ond ? Would you recommend PT ( what PT are you talking about ) compaired to MG to your current prospects/customers ? Is using PT a viable buy option for a Mass produced product ? .. or a one off ? ..

I think Im going to call around to the Fact Plants and see what they use..( not Joe Shmoe boats of Wyoming for sure ).

Ill Give a report Monday/Tues..

Who do you work for Ond ?

YD.