Replies

1. 
   Guest_ | Sep 24, 1999 07:45am | #1

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   Aaron,

   A 3/4" plywood gusset on both sides of the ridge should do the trick.

   Joseph Fusco

   View Image

1. 
   Guest_ | Sep 24, 1999 10:09am | #2

   *If you have the headroom, I'd recommend not tying them together. The ugliest feature of many additions that are built extending the existing roofline is the "hump" that typically shows up when the addition settles. Nasty. It can be mitigated by taking off the shingles and roof sheathing on the existing structure back a rafter or two, then bridge from the existing rafters, across the "seam", and onto the addition with sheathing. In that case you have a "gracefully nasty dip" instead of just plain "nasty". In addition, you may have difficulties matching the new shingles to old. Are you going to reroof the entire house? Shingle disparities can be hidden by different roof planes.With a carport you may not get too much settling, but still...A better option may be to put the roof of the addition a foot or two lower than what you now have. I've seen offsets as little as 6-8 inches lower, right below the rake trim. Ever seen the old colonial farmhouses where all the additions added on over the years have a roofline lower than the preceeding? There's a reason for that.It's fairly easy to match the ridge board height using Joe's technique. Use a dry ridge board though, green lumber will shrink. I don't know if setting a green ridge board 3/16ths or 1/4" high for eventual shrinkage would be wise. Kind of a crap shoot. Good luck.

1. 
   Guest_ | Sep 24, 1999 03:07pm | #3

   *I have to agree with Mongo about offsetting the roof if possible. But drop it enough that you have room to work the flashing properly. Especially if you are in wet area and or your house has wood siding.-Rick Tuk

2. 
   Mad_Dog | Sep 24, 1999 07:08pm | #4

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   Right on, Rick. I just flashed a very expensive, poorly
   designed 3 car garage with triple rooflines that were offset
   about a foot. The fascia dropped to the point where I could
   not get my hand under it to nail the step flashing. Scraped
   a lot of skin, dropped a lot of nails, hit a lot of fingers,
   yes there were words spoken.

   Classic case of bad design costing a lot more than it looks
   on paper.

   BTW, I can't wait to see all the birds and animals partying
   under all those nooks/crannies/!

   Gotta think it all throug

3. 
   Aaron_Miller | Sep 24, 1999 07:08pm | #5

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   I'm building a carport onto the gable end of a small ranch house. My question is "what is the best way to tie the existing ridge and the new extension of the ridge together? " The existing is a single 2x10. All suggestions are appreciated.