Tuftex Paneling Install Help

Quote:
I wish I'd used the foam ones...that sounds so much easier than the hard plastic. I tried to be very careful about lining up the plastic strips on each purlin, but when the time came to put on the Suntuf panels I always seemed to find the valleys/peaks were a little off kilter on at least one purlin. I found it to be a very fiddly job on a day when it was very hot and mosquito-y. It was my least favorite part of construction.
 
Run silicone. You are trying to keep water out. Water will penetrate the seams between the roofing, even with the panels lapping over one another, and will eventually find its way to the rafters. This will cause rot and ultimately a failure.

As far as the rafters, the size and quantity depend on a number of things:
1) What's the horizontal run? (The horizontal length from the point where the seat cut rests to the point where they attach at the peak.) The greater the length, the stronger the rafter member needs to be.
2.) What species of lumber is available to you? Here in Virginia most of our rafters are Southern Yellow Pine. In your area you may be using something different. There are slight variances between species.
3) What is the Snow Load for your area? Again, in our area we design for 30# Total Load (20# Live/10# Dead). In Canada you could be looking at 60# Total (50# Live/10# Dead). Using the U.S. Span Book for Major Lumber Species (provided by the Candaian Wood Council), a roof in a Snow Region with Light Roof Covering and No Ceiling Attached (50# Live/10# Dead) can span (horizontal) the lengths shown in the following materials when spaced at 16" on center: 2x4 #2 Spruce-Pine-Fir -- 6'-8"; 2x6 #2 Spruce-Pine-Fir -- 9'-9"; 2x8 #2 Hem-Fir -- 13'-2"; 2x10 #2 Hem-Fir -- 16'-1".

Hope this helps.

I design homes and additions.


Don


www.CarriageStone.com
 
Hi Don,
I don't quite understand the Horizontal Run you mention.
Here's my deal:
My structure is 6'w x9'.
I will be using five 8' panels. (panels are 26" wide with 2" overlap = 10')
One 9' wall is seven ft high, the other is six ft high. So my pitch will be 2/12 ( I think?)
I plan on building a roof just shy of the 8' x 10' that the panels will create.
I then plan on attaching this to my 6'w x 9' long structure. (giving me some overhang)
I will be using pressure treated 2x4s for the rafters.
How many would you use?
Pics below show what my plan is.
The 2 inset rafters on the sides will align with the 6 foot frame walls, the additional are for the overhang (10' of panels on 9' frame)
I hope this makes sense...
Bottom View-
50610_roof1.jpg

Top View-
50610_roof2.jpg
 
The horizontal run in your scenario is 6'-0". You could run 2x4's at 16" O.C. for that scenario. Running 9'-0" at 16" O.C., you would need at least a minimum of 8 rafters plus another at each end for the overhang. Once you run those, run some 1x4's perpendicular to the rafters at 16" O.C. (on center) to support the panels.

Hope this helps.

Don
 

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