Doing some conceptual drawings for a small addition to a 1950’s house. Attached is a 3d drawing that shows the existing house and one of the proposed additions. The addition is the new gable on the right side of the drawing.
Problem is that this idea creates a bad spot where the new roof abuts the old gable. Roof slope is about 3/12, possibly 2.5/12. Question: How bad is this valley (is that the right term?). Anyone have any ideas as to a different roof style?
Due to the low slope and the low (8 ft) plate ht, the existing house seems a little dark, so the thought of a gable with lots of windows appeals to the HO. The gable faces north.
Whenever you are asked if you can do a job, tell’em “Certainly, I can!” Then get busy and find out how to do it. T. Roosevelt
Replies
Forgot the drawing...
Whenever you are asked if you can do a job, tell'em "Certainly, I can!" Then get busy and find out how to do it. T. Roosevelt
Ed,
Extend the existing front roof to a ridge and then run a new rafter down to the addition wall and create a new gable. Now frame a reversed gable like you drew but this will bring your valleys to the outside corners of the new addition and what this does is keeps the valley from running into the wall like you have in your drawing.
Doing it this way will also raise the pitch of the reversed gable because your extending the front rafters and creating a new gable with a higher ridge so that gives you a higher rise for your reversed gable.
Joe Carola
I had the same thing in mind. That first one shown is pretty much a gauranteed leak situation. I never do a dead valley.
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Piffin,
If he wants to frame it the way he has it he could just frame new rafters from the existing ridge and bring the valleys to the outside corners of the new addition walls but I think without knowing the dimensions that the pitch would be to low and he would have two different pitches on the gable and from the side it probably wouldn't look good.
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Joe Carola
Edited 8/19/2004 7:39 am ET by Framer
Something like this...?
How much of a problem will the end of the left valley cause where it dies into the existing gable wall?
Whenever you are asked if you can do a job, tell'em "Certainly, I can!" Then get busy and find out how to do it. T. Roosevelt
much of a problem will the end of the left valley cause
Good question. It's going to get a bunch of water off the roof.
How about making the gable more like a dormer? Give your self a couple of feet on either side to catch a gutter & downspout. The roof framing (shouldn't) be any more complicated than it will be any way.
Alternately, you could add a clerestory (or two) as a shed dormer to take advantage of the northern light.
I've flipped around to the north face in this quick massing.Occupational hazard of my occupation not being around (sorry Bubba)
You extended the front ridge like my first drawing but kept the back ridge lower. That's good if you have enough pitch. If you don't have enough pitch just raise the ridge to meet the new extending front ridge.
You said something about using a gable to fit windows. Are you putting in some kind of circle top where it needs to go higher then the top plate? If so increasing the pitch helps but you have to frame this now with True Valleys.
I just drew a little back view just to see if this is something like your doing but can you draw a back view and show how high the window or windows will be?
Joe Carola
Framer ... probably not a round top window, more likely two trapezoids on each side of the center-line studs to the ridge. But yes, some type of window above the plate.
Cap'n ... I like the idea of making the gable more like a giant dormer. I don't think the shed roof concept will work ... the existing roof is only 3/12, so the new shed would be almost flat.
Whenever you are asked if you can do a job, tell'em "Certainly, I can!" Then get busy and find out how to do it. T. Roosevelt
Is there a reason why the new addition has to be a gable? You could simplify this a lot by raising the existing ridge and simply extending the roof back (make the roof on the right end match the roof next to it). That would keep the roof lines more similar and to my eye it looks less cobbled on.
The new gable makes room for bigger windows on the north wall.
Whenever you are asked if you can do a job, tell'em "Certainly, I can!" Then get busy and find out how to do it. T. Roosevelt
That's a reason.