Tod osier
WKR
- Joined
- Sep 11, 2015
- Messages
- 1,823
We had a pole barn put up to serve as a garage and we are in discussions with the builder because there is an obvious issue with the roof/trusses. I’d like to not name the builder at this point because we are early on in these discussions, but this a large national pole barn builder known for top quality.
Building is right next to the house and I’ve been consistent from the start that it needs to look sharp. The building is a fairly simple building built by a premium pole barn builder with a national reputation, so the expectation that it will look very polished. I also own another building built by this builder, so I have a good frame of reference as far as what to expect.
Building is 48’x40’x14’ with the overhead doors in the gable end (what I’ll call the front). Construction is metal over wood, trusses are 4/12 metal-plate-connected wood trusses. The front and rear trusses are on the end walls and are supported by posts along their length and are standard trusses without a raised bottom chord and the inner trusses are raised bottom chord trusses (bottom chord is 1/12 to get a little more height inside for an rv-sized overhead door). The issue is that the top chord of the first and last trusses are basically straight/true to the eye, but the inner trusses all have a crown. The crown is not smooth, but a sharp inflection point mid top chord where the wood is joined and a web from the bottom meets the top chord. This crown is about 1” in the 24’ and is obvious from the ground (verified by a string inside). Not only can you see that the ribs of the metal roofing are crowned, the metal looks tortured where it is bent across the purlins at the area of the crown. The issue is obvious and there is no debate that it is visible. The only way for this builder to fix it is to tear the trusses off along with the roof and associated trims and rebuild. I have not said that I absolutely want that done, but I believe that it is an option that I could pursue. To give an idea of where we are at, the sales guy that is the point of contact and a pretty straight shooter said that only 2 out of 100 guests to our home might notice the issue (I’m the 1 out of 2 people paying for this building that will notice it every day). As an FYI the building has about a thousand significant cosmetic issues that they are happy to fix outside this truss issue, this building is not their best work overall.
I’d like some insight from someone who knows truss construction... Is there a truss specification out there on the straightness of the top chord? What is reasonable for a nicer than average pole barn? My expectation going in is that I wouldn't see a crown or the purlins showing where the metal is forced over the purlins. Is this an issue with raised bottom chord trusses or a manufacturing defect (or both)? The manufacturer builds the trusses in house and there was an issue getting them.
I’d like some feedback on how to view or pursue this issue moving forward. I don’t want to look at this roof for the next 20 years and regret not pursuing this, I imagine that it will only look worse with time and not look better.
Best picture I can get, since it is way up there given the 14' walls. Look at the rib with the arrow, the whole roof over the raised chord trusses looks like that, it is just hard to capture in a photo.

Building is right next to the house and I’ve been consistent from the start that it needs to look sharp. The building is a fairly simple building built by a premium pole barn builder with a national reputation, so the expectation that it will look very polished. I also own another building built by this builder, so I have a good frame of reference as far as what to expect.
Building is 48’x40’x14’ with the overhead doors in the gable end (what I’ll call the front). Construction is metal over wood, trusses are 4/12 metal-plate-connected wood trusses. The front and rear trusses are on the end walls and are supported by posts along their length and are standard trusses without a raised bottom chord and the inner trusses are raised bottom chord trusses (bottom chord is 1/12 to get a little more height inside for an rv-sized overhead door). The issue is that the top chord of the first and last trusses are basically straight/true to the eye, but the inner trusses all have a crown. The crown is not smooth, but a sharp inflection point mid top chord where the wood is joined and a web from the bottom meets the top chord. This crown is about 1” in the 24’ and is obvious from the ground (verified by a string inside). Not only can you see that the ribs of the metal roofing are crowned, the metal looks tortured where it is bent across the purlins at the area of the crown. The issue is obvious and there is no debate that it is visible. The only way for this builder to fix it is to tear the trusses off along with the roof and associated trims and rebuild. I have not said that I absolutely want that done, but I believe that it is an option that I could pursue. To give an idea of where we are at, the sales guy that is the point of contact and a pretty straight shooter said that only 2 out of 100 guests to our home might notice the issue (I’m the 1 out of 2 people paying for this building that will notice it every day). As an FYI the building has about a thousand significant cosmetic issues that they are happy to fix outside this truss issue, this building is not their best work overall.
I’d like some insight from someone who knows truss construction... Is there a truss specification out there on the straightness of the top chord? What is reasonable for a nicer than average pole barn? My expectation going in is that I wouldn't see a crown or the purlins showing where the metal is forced over the purlins. Is this an issue with raised bottom chord trusses or a manufacturing defect (or both)? The manufacturer builds the trusses in house and there was an issue getting them.
I’d like some feedback on how to view or pursue this issue moving forward. I don’t want to look at this roof for the next 20 years and regret not pursuing this, I imagine that it will only look worse with time and not look better.
Best picture I can get, since it is way up there given the 14' walls. Look at the rib with the arrow, the whole roof over the raised chord trusses looks like that, it is just hard to capture in a photo.
