Finally started on my Texas pole barn!

[EddieWalker]

With those large screws, make sure you are very, VERY careful not to overtighten them. There is a little rubber gasket at the top, just under the washer, that is supposed to be snug. The second it starts to bulge out when tightening it, STOP!!!!!

If you tighten them too much, you will crack, split of spread apart the rubber gasket to the point of failure.

Metal rools rairly fail, but the screws will and nail will allot sooner. If you spend top dollar on anything, it should be your screws. The quality of the rugger on them varies from pure crap (box stores) to very good.

If you have any questions our unsure, do a search on some manufacturers websites. They are all pretty good at explaining how tight to get the screws and how much bulge is required on the screws.

If you overtighten them, or just one, it might be years until you see the leak. If it's in the right location, the water can travel a very long distance along the wood framing and disapear on you too. I've chased water trails through attics and it's always amazing how far water will travel away from the leak to the place where it's discovered.

Eddie

[SteelDust]

Originally Posted by EddieWalker

With those large screws, make sure you are very, VERY careful not to overtighten them. There is a little rubber gasket at the top, just under the washer, that is supposed to be snug. The second it starts to bulge out when tightening it, STOP!!!!!

If you tighten them too much, you will crack, split of spread apart the rubber gasket to the point of failure. Eddie

The little 12v Li-ion Milwaukee driver that I got for an early fathers day present is doing a great job of driving those screws. I set the clutch and can pretty much forget it, all of the washers are perfectly compressed. It's only weighs a pound or two and fits right in the pouch on my tool belt. The only downfall is that it spins much slower than my cordless drill, making the process of getting the screws started a little slower.

The instructions for my metal roof had pictures of how a perfectly driven screw should look.

[em14]

Eddie,
I don't see the reference to the moisture concern in the site I listed but some mfr's have expressed that ... sorry about that ... I just didn’t take the time to go and research them again. The site I reference was just for good general information. As a retired engineer I understand condensation aka sweating. Here in the South up until a few years ago there were many houses constructed attaching "tin" to purlins only and of course they worked well because of lots of air movement as you stated. It is interesting to see metal roofing being used more and more … myself, I like metal roofing! When I was a young guy I sure didn’t like putting galv. V crimp on during a hot sunny days though!
Leo

[Megado]

Been a few weeks since we've been able to make it back to the property so I haven't gotten a lot done on the barn lately. With the weather reaching the 100 degree mark over the past weekend, there certainly wasn't much enthusiasm to leave the comforts of the A/C inside the house. I did accomplish getting the #30 felt underlayment nailed down early one morning before the sun got too high in the sky. Wanted to get that done to give the OSB decking some protection from the weather. Below are a few pictures of the finish product. I probably have more nails than typically applied in securing felt underlayment, however, with the metal roof installation still a ways off I wanted to be sure it stayed in place.



Hoping to get started on the roof of the other side of the barn soon. Dependant of course on the weather and the heat! Ugh!

[EddieWalker]

Nice to see that you went with 30lb felt. I did a job for a client last year who said they had 7 years experience as roofing contractors in Houston. When I had the roof decked in OSB, they took over. First, they used 15 pound paper and told me it's just as good for new construction. Then they bought the cheap, three tab shingles and said they didn't have the money for the better shingles. It's frustrating to see my work finished off so cheaply. Then I had to correct him on how he was nailing them, and he cut the shingles after nailing them down and through the paper. I had him take them off and put fresh paper down. It's a crap job that I had to hide when posting pics of it on my website.

What realy kills me is they spent $500 on new patio furniture, $300 on a new barbeque and a grand on a new stove so it would match the fridge. All money that should have been used on the roof in my opinion, but enough of my rantings. LOL

I'm just happy to see you doing it so nicely and using good materials.

Eddie

[Kyle_in_Tex]

Originally Posted by Megado

With the weather reaching the 100 degree mark over the past weekend, there certainly wasn't much enthusiasm to leave the comforts of the A/C inside the house.
Dependant of course on the weather and the heat! Ugh!

I definitely understand the heat thing. I try to get outdoor stuff done before noon or after 6pm. Lotsa water and breaks in the shade.

I keep on lurking here so I can keep up to date. Keep up the good work!

[SteelDust]

Looking good. I see I didn't get enough of a head start on you and you're rapidly catching up...haha. Hopefully, I don't have any surprises this weekend and have mine ready for siding by Sunday evening. A guy can hope at least, right?

[Kyle_in_Tex]

Megado,
Did you get to work this past weekend? 102ｰ here folks.

[Megado]

Originally Posted by Kyle_in_Tex

Megado,
Did you get to work this past weekend? 102ｰ here folks.

Kyle,

We did make it to the property this past weekend but I chose not to do any work on the barn due to the heat. I did make a walk across the dry crunchy pasture just to make sure things were still standing upright at the barn site. Heck...at this point even the fire ants are staying underground to be in the shade!

Jim H.

[slowzuki]

I'll say I went with the no OSB with the metal right onto the purlins. If I had to do it over I'd put the OSB down only because we live in the house and the stiffness of the stressed skin of OSB really tightens up a house to cut down on creaks.

The other think I would change is I would not use the full length sheets. We had the steel company cut the sheets to match our roof.

Now when the sun comes out and goes away, the top and bottom fasteners on the building get a heck of a workout and its noisy inside. If we had used three rows of 8 ft sheets it would have been much less movement. Also, we had some ice damage to a vent pipe (slab of ice came down the roof and ripped the steel as it took the vent pipe down hill) and depending on the location in the sheet, it can be hard to repair. If I could have just removed and replaced a sheet I would have been happier.