If you re adding to the gable end of the house the side wall that goes up to the roof s peak it s fairly easy to extend the existing roofline over the new space says curt schultz a realtor architect builder in pasadena calif.
Extending roof eave for room.
If you ve inherited a loft conversion from a former owner and are dissatisfied with the amount of full height space a box dormer is an easy solution that promises to transform the feel of your loft.
How to extend rafters.
A lean to roof also called a shed roof slopes in one direction with rafters that rest against another structure at their high end and overhang support posts or an exterior wall at their low end.
That s a simple low cost solution that can tie in well with the main house.
The cost of extending my 30 foot long roof overhang 14 inches was 340 or 11 50 per running foot for materials.
By mike guertin issue 138.
This cost did not include any labor or waste disposal fees.
Add a box dormer to create more full height space.
Have the helper hold the rafter extension in place and gauge the distance of the overhang while you hold the extension against the rafter and the roof sheathing and nail it to the existing rafter with a framing.
Mike guertin details 2 reliable methods for extending the eaves on a house to shed rainwater better.