Four inches is also close to the minimum for good working room between the threshold and the roof plane.
Minimum roof edge fascia.
And in some cases.
A minimum class a b or c roofing shall be installed in areas designated by this section or where the edge of the roof is less than 3 feet 914 mm from a lot line.
We are soon replacing our roof with atlas stormmaster shake shingles in heather blend.
Class a b and c roofing required by this section to be listed shall be tested in accordance with ul 790 or astm e108.
See drip edge flashing for roofs for complete details about installing drip edge.
Drip edge flashing directs roof runoff away from the roof fascia and edge and into gutters or at least not down the fascia board if no gutters are installed and it is recommended by roofing standards manufacturers and experts.
So start with a 4 inch drop at any doors or windows and slope down at 1 4 inch minimum.
The drip edge will be installed 1 8 proud of away or out from the furring strip in best practice or may be installed tight against the furring strip reduces the life of the furring strip by rot.
Nail thefurring strip to the fascia board near the fascia top tight under any extending of roof decking usually absent.
1504 5 edge securement for low slope roofs.
These tapered pieces of insulation can give flat framing a perfect slope.
With pac snap edge fascia outstanding protection against wind up lift damage for flat roof installations meets superior economy and ease of installation.
I ve read a couple of random posts stating that drip edge should match fascia.
I m currently debating on the drip edge color and wonder if there are any good design standards rules about this.