pressure treated trussses

[naptownCr]

Any body here ever had trusses made out of pressure treated?

[Winchester]

Nope, why?

[SLS-Construction]

Never heard of that, nor would I want them

Are you looking at the blue ones for resiting rot & mildew or fire rated ones?

[naptownCr]

I have to build racks for 60 solar pool collectors and since the wood will not be painted or sheathed over or sided they need to be pressure treated. My thought is that a truss could be built out of lighter material, will come put together and may or actually will be quicker to install. I need to build 6 racks
44 feet long, 6 foot tall with a top cord of 12'6"
This gets purlins on top and fiberglass or metal roofing or perhaps just the purlins to support the collectors.

[framer55]

I have to build racks for 60 solar pool collectors and since the wood will not be painted or sheathed over or sided they need to be pressure treated. My thought is that a truss could be built out of lighter material, will come put together and may or actually will be quicker to install. I need to build 6 racks
44 feet long, 6 foot tall with a top cord of 12'6"
This gets purlins on top and fiberglass or metal roofing or perhaps just the purlins to support the collectors.


Call a local truss company.

I have never seen a PT one, but I don't see the reason that they couldn't build you one.

[naptownCr]

I did and he has to get back to me. My concerns were with shrinkage opening up joints and corrosion on the truss plates.

[Leo G]

What is wrong with aluminum?

[nEighter]

you guys may need to look into some type of epoxy coating for the brackets. You guys could get some pretty gnarly coatings that could prevent the corrosion.

[SLS-Construction]

All the pool heating systems in AZ were attached directly to the roofing with little plastic standoffs, or laid directly on it as I recall. Silicone in the holes, then applied over the top of the screws / bolts.

The issue with the wood is you are trapping water in between the PT wood & the roof & if an ice & water shield isn't under there - you will major issues

The tubular metal, etc... is great for trapping leaves, etc... but the penetrations are sealed. They occasionally would add a stand off, but leaves would still get caught up in it

[Eieio]

Nap they do make pressure treated trusses for at least 15 years now.

I have used them before in Florida. The plates were specifically made for the lumber. The lumber was ACQ.

Best Trust Company. They were in SW Miami..

[naptownCr]

you guys may need to look into some type of epoxy coating for the brackets. You guys could get some pretty gnarly coatings that could prevent the corrosion.

All hardware is 314 stainless steel

All the pool heating systems in AZ were attached directly to the roofing with little plastic standoffs, or laid directly on it as I recall. Silicone in the holes, then applied over the top of the screws / bolts.

The issue with the wood is you are trapping water in between the PT wood & the roof & if an ice & water shield isn't under there - you will major issues
The tubular metal, etc... is great for trapping leaves, etc... but the penetrations are sealed. They occasionally would add a stand off, but leaves would still get caught up in it

There is a corrugated roofing similar to what is used on a pole barn roof
( metal or fiberglass) that the actual collectors lie on it is waterproof above the trusses My concern was the exposed portions of the racks (backs sides etc) which is why I wanted PT

Nap they do make pressure treated trusses for at least 15 years now.

I have used them before in Florida. The plates were specifically made for the lumber. The lumber was ACQ.

Best Trust Company. They were in SW Miami..

Miami is a little far to go and it looks like I will need 246 of them.
My truss supplier will fabricate them Don't know how much at this point but the project is still evolving

[nEighter]

Hey got that catalog for from ASM.. they only sent me 1 cd.. but it is just an online electronic hardware fasteners catalog.

[bconley]

If its not in direct contact with water, check into having them made with Borate treated wood and the fasteners aren't an issue.
Borate is water soluble though and will wash away with time.

[PA Woodbutcher]

One of our local codes states that any fastener within 50' of a pool must be stainless. Chlorine is another form of salt.

[Leo G]

What if you house is within 50' of the pool, does every fastener in the house need to be SS?

[PA Woodbutcher]

What if you house is within 50' of the pool, does every fastener in the house need to be SS?

Good question:surrender: I don't have an answer as all I ever had to worry about were decks and porches.

It is one of the strange local codes in one of the towns near me. Before the state registration they were all over the place with codes that were enforced and not enforced. Haven't spent much time working in town last year, so not sure where they are at on them.