Roof Over And Converting A Mobile Church Into A Home - Remodeling - Page 4 - DIY Chatroom Home Improvement Forum
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Old 07-16-2017, 10:46 PM   #46
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Re: adding a roof to a mobile church


Experience is gained by figuring it out after you have it finished.
Boy are you getting lot's of experience.

You line up trusses after you have both walls straight , plumb and parallel
The heel cut is the cut that should be exactly over the edge of the out side sheeting of the wall, as that doesn't apply. Line up one where you want it, measure from something to that heel cut and make the heel cut measurement the same for that one wall and let the rest take care of it self..

When you do that if you notice the measurement on the other wall is changing check your levels and everything again.

You talked about the angle of the 2x8. I think you want to slide it up under the tails.
It will be the same angle as the tail. but that wouldn't count for bearing weight you need something like 2 1/4 plus under the heel cut

You can add to the tails with 2x4s scabed to the sides of the tails. Cut the tail angle
figure how much you want to add and add another 4 ft to that.
But that should be checked to make sure that is allowed where you are.
After you have al the trusses up pull a string across the ends of the tails to see how close you have them. Any that are to long can be trimmed. but usually you can nail on a 2x4 liner, just make sure it is flush with the bottom of the tails, that will give you the right plane on top. Then you run the string again and you may have to tap it out in a few places to make it straight.
You do not need a fascia behind a gutter.
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Old 07-17-2017, 04:55 AM   #47
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Re: adding a roof to a mobile church


I would add that most of us learn by doing .... and making our share of mistakes along the way. Ambitious project! keep your eye on the goal and all the bragging rites you'll have once you finish.
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Old 07-18-2017, 09:34 PM   #48
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Re: adding a roof to a mobile church


We have all the trusses set and most of the lathe whichnis 2x4s. We were told by more than one person to be sure and put roofing paper under the metal roof. They said that the metal roofs form condensation and will weep or drip down on the attic area and the roofing paper is for that. Our problem is , we cant figure out how to put roofing paper over lathe , meaning where do u stand ? That also seems like it also doesnt give u a place to stand to put the metal on as well.....
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Old 07-18-2017, 09:46 PM   #49
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Re: adding a roof to a mobile church


A quick google of that looks like most times they are paper over sheeting and then strapping.
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Old 07-18-2017, 09:47 PM   #50
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Re: adding a roof to a mobile church


Did you run a catwalk down the center of the trusses and a leveling brace for the gables.
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Old 07-18-2017, 10:06 PM   #51
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Re: adding a roof to a mobile church


Run the tar paper from the ridge down to the eave vertically and walk beside it.
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Old 07-18-2017, 11:05 PM   #52
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Re: adding a roof to a mobile church


I dont know what you mean by catwalk? There is no sheathing on this roof, just the trusses and then the 2x4 lathe or purlins. I too have been googling and i found some specs that said to run it from peak to eave rather than horizontal. Do you think overlapping 3 or 4 inches would be good enough or should it be taped? If so taped with what?
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Old 07-18-2017, 11:26 PM   #53
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Re: adding a roof to a mobile church


The cat walk is 1x4 or bigger run up the center of the trusses on top of the bottom cord nailed on the same lay out as on the wall.
No more than 10 ft between bearing wall and catwalk or next catwalk.

Angle brace is 2x4 nailed high in the gable truss and sloped down to tie into the cat walk. This to hold the gable plumb.

I would check with people that sell the stuff for overlap and tape.
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Old 07-19-2017, 05:04 AM   #54
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Re: adding a roof to a mobile church


Quote:
Originally Posted by leenabug View Post
We have all the trusses set and most of the lathe whichnis 2x4s. We were told by more than one person to be sure and put roofing paper under the metal roof. They said that the metal roofs form condensation and will weep or drip down on the attic area and the roofing paper is for that. Our problem is , we cant figure out how to put roofing paper over lathe , meaning where do u stand ? That also seems like it also doesnt give u a place to stand to put the metal on as well.....

The roof on my house is installed over strapping with no tar paper BUT my attic space is well ventilated and over the last 25 yrs I've experienced no moisture issues. My barn roof is built the same way but no attic or ventilation and occasionally it 'rains' in there from condensation.

How far apart are your straps? If you added a strap in between each current strap that might make it easier to both lay the felt and walk over it ... also gives more wood to screw the metal to.
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Old 07-20-2017, 04:32 PM   #55
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Re: adding a roof to a mobile church


Here is a pic with all the trusses up. We finished the last of the lathe this morn(and the overhang) and are working on the board that goes on the end of the rafter tails this evening. Getting ready to do bracing and we are ready for metal hopefully.

We are going to vent the attic space area, insulate it and also have a ridge vent. So we plan to run the 30# roofing paper from the peak to eave as a back up should we have any condensation. But hopefully the venting will take care of it. I still want to tape it just in case as overlapping vertically doesnt seem like it would accomplish much.
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Old 07-20-2017, 04:48 PM   #56
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Re: adding a roof to a mobile church


I would still extend the tails a foot or 15"

I would think the tape they have for covering the joins in sheeting or any of the window flashing peel and stick would work for that. You would have to cut down to about 2" I don't think you can get less than 6" wide

There is a double sided but I don't know if you will find it locally.
http://www.mfmbp.com/productView.aspx?id=35
http://buildingadvisor.com/materials...ing-membranes/

The trusses look great.
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Old 07-20-2017, 06:45 PM   #57
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Re: adding a roof to a mobile church


Frankly, the tape is not required.
Have never seen the paper taped under metal, but go ahead if you feel better with it.
All it does is avoid the condensation from dripping on the sheathing or insulation. Any buildup flows out at the eave edges.
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Old 07-21-2017, 05:30 AM   #58
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Re: adding a roof to a mobile church


I also don't see any need to tape the felt. You said "plan to run the 30# roofing paper from the peak to eave" Not sure if you worded it wrong or don't understand how the felt is typically put down but the felt gets laid horizontally with the first strip at the bottom, the next overlaps the first until you've worked your way to/over the ridge.
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Old 07-21-2017, 07:35 AM   #59
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Re: adding a roof to a mobile church


Yes i know the felt is suppose to be laid horizontally, but i found some specs (and someone who did it that way), that said it could be installed vertically if taped. The other person that installed theirs that way said they just overlapped, but i know it can leak if not taped when ran vertically. The reason we would love to be able to install vertically is because we have no where to stand if installing it horizontally. There is no sheathing, just 2x4 lathe(or purlins) on the trusses. Most in this area do not put the felt under the metal, they just vent, so im not 100%relying on the felt , but its good backup i hope. I am venting as well.
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Old 07-21-2017, 07:48 AM   #60
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Re: adding a roof to a mobile church


Quote:
Originally Posted by leenabug View Post
Yes i know the felt is suppose to be laid horizontally, but i found some specs (and someone who did it that way), that said it could be installed vertically if taped. The other person that installed theirs that way said they just overlapped, but i know it can leak if not taped when ran vertically. The reason we would love to be able to install vertically is because we have no where to stand if installing it horizontally. There is no sheathing, just 2x4 lathe(or purlins) on the trusses. Most in this area do not put the felt under the metal, they just vent, so im not 100%relying on the felt , but its good backup i hope. I am venting as well.
http://www.ebay.com/itm/3m-FLASHING-...-/220917401410
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