New Info on Pressure Treated Wood

Originally Posted By: rbracklow
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Here’s some good info on Pressure Treated Wood!!

November 26, 2004

Pressure-Treated Wood In Hot Water Again
Here's yet another chilling reason to hire a home inspector to give your home -- new or old -- the once over.

A change in the formula designed to remove the human health risk from pressure-treated wood appears to have created a Catch-22. The new formula puts the structural integrity of your home at risk.

To help keep pressure treated wood from rotting, old additives contained arsenic. After the industry voluntarily bowed to pressure from health and safety officials, new preservatives introduced this year most commonly include applications of ammoniacal copper quat, or "ACQ", copper azole and borate.

Wood- and metal-fastener and connector industry tests have revealed that the new preservatives are more corrosive to metal.

That's of particular concern in hurricane, earthquake and other regions where a home's structural integrity is paramount. The impact corroding connectors can have on both the safety and value of any home is just as paramount.

Pressure-treated wood has long been commonly used to provide a base or sill plate for a home's framing. The framing is attached to the base with metal connectors and fasteners. Pressure-treated wood products are also used in many outdoor applications, including children's play structures, decks, walkways and fences.

The product is also readily available to inexperienced do-it-yourself home owners who purchase supplies at Home Depot, Lowe's and other construction materials stores.

"CPSC is recommending consumers use stainless-steel brackets and fasteners in conjunction with ACQ-treated lumber," said Scott Wilson a commission spokesman.

The CPSC is considering further study based on the further tests from the connector industry and Contra Costa County (CA) consumer fraud inspector Ted Todd who works in the District Attorney's office there.

Todd looked into the issue after his uncle told him that galvanized hangers used in his new pressure-treated wood deck revealed corrosion -- within a month. His uncle lives in a humid region -- along the shores of the Umpqua River in Oregon about 30 miles from the coast.

High humidity can hasten corrosion on all kinds of metal fasteners -- screws, nails, connectors, joist hangers, etc. -- used to secure pressure-treated wood with the new preservatives, experts say.

Experts also say well-coated galvanized metals, including zinc coated products give greater protection than uncoated metals, but stainless steel is best used with the new engineered wood products because stainless doesn't corrode.

Both California's Housing and Community Development Department and the state's home building trade group, the California Building Industry Association are investigating the matter.

Written by Broderick Perkins

Copyright ? 2004 Realty Times. All Rights Reserved.

The highest compliment my clients can give me, is the referral of their Friends, Family and Business Associates!

NorCal NACHI Chapter Founder and Chairman.

Originally Posted By: jschwartz1
This post was automatically imported from our archived forum.

Short and sweet;

ACQ replaces CCA. The PT Lumber is actually green in color due to the copper compound in the wood. Drying time is about the same 6 weeks.

All TAPCONS will rust out in less than 30 days. Your exterior doors in Hurricane prone areas require these screws!! Look for it.

Also your aluminum windows will corrode when you use acq bucks.

Stainless fasteners or electroplated will work. Hot Dipped will not. For decks you must use stainless, electroplated, or vinyl screws.

The reason for the change is the arsenic compound in CCA known as ARSENATE. Arsenate is a natural compund found in shrimp. If you eat 1lb of shrimp is equal to eating one 2x4x8 cca PT lumber. Yum!!!!!!!!!!

Originally Posted By: rcooke
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Is there a test to tell the old type of pressure treated wood from the new.
It sounds like I do not want to use any of the new type of pressure treated .
Be careful out there The new PT wood is eating the hangers and fasteners BIG time.
Roy Cooke sr
Pressure-Treated Wood In Hot Water Again
by Broderick Perkins

Originally Posted By: jpeck
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jschwartz1 wrote:
Stainless fasteners or electroplated will work.

Stainless steel will work, electroplated will not.

Hot Dipped will not.

It is recommend that double hot dipped galvanized (or G-90) be used if not using SS fasteners.

Check the links on this page, very informative -

Jerry Peck
South Florida

Originally Posted By: jschwartz1
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jerry is CORRECT Hot dipped.

Originally Posted By: jbushart
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Stacy Wiggins Reporting
City Investigates Deck Collapse
Oct 10, 2005, 05:48 PM
Virginia Beach inspectors were in Sandbridge on Monday trying to figure out what caused a deck to come crashing down in the middle of a wedding reception.

It happened at a home on Sandfiddler Road. Thirty to 40 people were on the deck when it happened. Twenty-eight of them wound up in the hospital. Some had broken bones.

City inspectors now know why the deck collapsed. They say the deck appears that it was not properly maintained and some of the fasteners on the deck were rusted. Meanwhile, a home inspector said there are things you can do to make sure your deck is safe.

"In many cases, particularly in Sandbridge and in older structures, maintenance is the explanation for damage like that," said Ken Zenzel with AMER Building Inspection Services.

He said living so close to the water, corrosion is a big problem. He said in an ocean environment, even things made out of steel can rust and literally fall apart. He said anchors, nuts and bolts can rust and that can make your deck unstable. If you have that problem, you need to replace the problem parts.

The other big problem is when deck ledgers are not tight against your home. He said you can get a screw driver and see if you can get it in between your home and deck. if you can, that could lead to disaster.

Home Inspection Services of Missouri

"We're NACHI. Get over it."

Originally Posted By: lewens
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Second time around for this subject.

Just my usual 12.5 cents

From The Great White North Eh?

Originally Posted By: phinsperger
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Larry, You’ve been pretty quite lately. Everything Ok?


Paul Hinsperger
Hinsperger Inspection Services
Chairman - NACHI Awards Committee
Place your Award Nominations
here !

Originally Posted By: jnosworthy
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and don’t forget,

When somebody does end up selecting the very expensive stainless steel bracket, take a good look at the fasteners they ended up using.

Around here I’m noticing the standard HD galvy hanger nails used in these SS brackets. Which is worse ??

Originally Posted By: pbolliger
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Having attended a Simpson Strong Tie training seminar, I learned very quickly that the new ACQ PT wood is not so fantastic. Several “institutions” are arguing over it at this point… Governing bodies and companies alike are battling over “proper” recommendations. Someone is going to get sued over this again. Not all hangers/ brackets are the same. I personally believe SST is the best product…

Other then Stainless steel even hot dipped Galvanized fasteners and brackets can corrode in ONE year! If you live ocean side then it should be stainless.
The cost is always the factor but to me it only makes sense to use stainless the first time. I guess some people would like to replace their entire decks every other year.. Does this make any sense. How about this : You use hot dipped galvanized nails per MFG and bracket type but you apply them to ACQ PT wood ![icon_question.gif](upload://t2zemjDOQRADd4xSC3xOot86t0m.gif) ![icon_question.gif](upload://t2zemjDOQRADd4xSC3xOot86t0m.gif) . The lifespan of the nail in this new PT wood is not that long so why not go with stainless