Putting a new addition on your home is an exciting thing. You will finally have the extra rooms and/or bedrooms you so badly need. There is just one question you have for your roofing contractor; which way will the roof go? Here is what your roofing contractor might suggest.
Continue the Roof out as an Extension of the Existing Roof
Okay, so let's say that your new addition is an extension of current walls. You could easily extend the roof out along the same planes as the current roof that is in the same area where the new extension will go. This is probably your easiest and least expensive option since other options will require a reconfiguration of the roof.
Running the Roof Perpendicularly to the Rest of the Roof on Your House
If you already have a gabled roof, constructing a roof that is perpendicular to the rest of your roof will look quite normal and natural. In the architectural scheme of things, you are creating an additional gable over the new addition, which really only makes sense. However, there will be some building challenges with making this roof connect with the rest of your roof. You will need the help of an architect and/or a structural engineer to make sure the newer section of roof can connect with the old roof and that neither sections pull the other section down and/or away.
Creating a Completely Separate Roof Structure
Adding more roof does not necessarily mean that it has to connect to the rest of your roof. In fact, your new addition could have its own separate roof. The only real concern you would have is making sure that gutters and downspouts redirect the rain away from the overlap of the new roof and the old roof. Then rain and snow cannot accumulate on the overlap and cause water damage to develop over time.
Of course, you could always opt to flat-roof it. Creating no rise and run roof and no connecting or overlapping roof is accomplished by creating a single flat roof to cover the top of your new addition. It does not always look right with every house style, but it does finish the new addition quicker and without any of the previously mentioned challenges. You could also flat-roof the addition now, and then change the roof at a later date if you cannot decide.