I think roof on addition should be a gambrel with new ridge centered on total sructure width 24 feet.
Gambriel roof addition.
When matched to the angle and proportions of other rooflines on the house your gable roof will add visual interest and character to the home making the addition look like an asset that belongs with the house.
By tying the roofs together you are making the joint much more waterproof which will minimize the chances of allowing water inside and leaking.
The gambrel style can be implemented in many ways into a roof design such as.
Valley gambrel juts out check out our pictures of homes with gambrel roofs below to get a sense of the many gambrel roof designs you can implement.
The old structure is 14 wide by 18 long.
Any type of roof addition will need to be tied in for it to work properly.
Tying in a roof simply means linking the pieces together and connecting them.
Matching the roof shape goes a long way toward blending the new and old.
Fitting your own gambrel roof.
A gambrel roof is similar to a hip roof but it actually has gables at either side.
If you want more usable space on the second floor you can increase room size with shed dormers a well established style variant.
Here s a gambrel roof diagram.
Rather than a single slope a gable roof consists of two slopes that meet at a peak running down the middle of the roof.
Existing shed has a gambrel roof with ridge running parallel to the addition.
Very little space is wasted in the pitch of the roof because the gambrel roof addition is so wide.