Room additions

[kerwinq]

I am looking at extending my garage and adding a family room onto my house, it is a typical ranch style house and I am looking for ideas of how to tie the new roof line in with the existing one. The addition will be 16 x 40, each will be about 20 feet wide after the walls are in place. I am planning on adding a 12 ft wide patio the length of the addition.
Anyone have any pictures of what they have done or a website that has some examples that I can look at?

 

[GearBeer]

Some photos would be helpful. A 12x24 living room was added to my house, but it was a ranch so they just extended the existing roof.

 

[kerwinq]

Here is a picture of the back of the house, the garage will be on the left and the covered patio is where the family room will be. Also planning on adding another patio to the back of the garage/family room addition
View attachment 37790

 

[Kevin54]

Here is one with the 24'x24' addition that I built on a few years ago. The porch on the back is 8' and the other side that you can't see is 6'. It makes the complete footprint 32'x30'. I just tied it in at the peak with the same pitch as the existing roof

 

[1320stang]

My 16x16 addition with 8' deep wrap around porch (24x24 total roof area)

 

[GearBeer]

Hmm... I think you're going to end up with an awfully tall addition. You're going to need to 'T' the addition into the existing house, like Kevin posted above. However, with the garage next to the familiy room you're going to have to span quite a large space with your roof.

Typically, you'd do a single roof with the ridge perpendicular to the existing roof. That's what they did with my workshop.

 

[1320stang]

GearBeer, looks like the roof dies into the house, dead valley?

 

[GearBeer]

Almost, the first time around they didn't install the saddle (that I specifically directed them to, see the result within one month below). They did tear that off and install a saddle but it doesn't go as far out as I'd like. I think I'll eventually remodel the house further and bring the master bedroom's (that crosswise room) roof down to meet the workshop's roof. Fix it right, ya know?

 

[1320stang]

I hear you, for me there was no 'they', other than my concrete, I'm the contractor, and my wife is wanting to fire the contractor as it's not quite done.

I'm finishing the drywall smooth, so it's taking a little longer than she'd like, plus that damn coffered ceiling I talked myself into......

 

[GearBeer]

I had to look up what a coffered ceiling was. WOW! You've got your work cut out for you.

I wish I had the time to do everything myself. I probably could manage it now, but when I was doing the bulk of the construction I worked almost an hour away. It really chews into your time, ya know?

You're not putting that coffered ceiling in the garage, are you?

 

[1320stang]

no, the room addition.

Off to the right in the first picture, you can see my Fairlane and a freebie Dodge Grand Caravan that will be going away soon, I hope to go out 40' that way and 30' deep. The end of the house is 32' so the new roofline will tuck up under the eave on that end, unless I go higher.

I'm thinking scissor trusses or SIP's so I can have a lift and a storage loft.

 

[Kevin54]

Kerwing........reading your addition dimensions again, I am assuming that you are coming out 16' from the house and making it 40' wide then running a wall down the middle splitting the addition into two 20' wide rooms. Now with those dimensions and from the pic you posted it looks like you have a standard 4/12 pitch on your roof. If that is the case for a 40' wide room and tieing an addition into your existing roof, you would be around a 3/12 pitch for you new roof trusses to get them to tie in to your existing ridge. Anything lower than your existing ridge and you are not going to have too much of a slope. A 4/12 pitch is 18 degrees. A 3/12 pitch is 14 degrees.
If you give me the width and length of your house and the existing height of your roof peak from your top plate of the wall, I can tell you exactly what your roof pitch is and what your new pitch will be.

 

[GearBeer]

Your best bet might be to create a faux roof that is coincident with the front face of the current roof at the current slope. I don't know where you live, but evidently it snows. I wouldn't feel comfortable with a 3/12 roof, but I'm in Michigan.