I am adding aluminum gutters to my new detached garage. I hadn't originally included them in the design, but want to add them to protect the doors and siding from splashing water, and to prevent soil runoff/erosion.
I've been observing gutters, watching YouTube, etc, but haven't found a satisfying answer to a few questions...
- Should the gutter slide up under the drip edge?
- If gutter is under drip edge, will it be low enough to prevent possible ice damage?
- Should the gutter hangers penetrate the drip edge?
- Do the penetrations for gutter hangers need to be sealed in any way?
- If the gutter is not installed under the drip edge, do I need some other sort of flashing?
- Should a spacer be installed behind the drip edge to allow air movement between gutter and fascia? (I know this is recommended for wood fascia, but is it necessary with aluminum?)
Here is the structure I have:
- Roof pitch is 6/12
- Aluminum drip edge overlaps fascia about 1.5"
- Adhesive ice/water barrier installed over drip edge
- Asphalt shingles overlap drip edge by 1/2", giving total of 1" overlap from fascia
- 2x6 subfascia board with aluminum fascia cover
- Total gutter run will be 22'
- Structure is in Wisconsin, USA (cold, snowy winters), and will be insulated and (moderately) heated.