Gutters and downspouts, modelled like a real kit

A full modelled gutter system, not a box on the fascia: an open-top K-style channel the roof can actually drain into, hidden hangers about every 32 inches, solid end caps on open runs, 90-degree corners on hip and mansard, an outlet opening into the trough, B-elbow offsets kicking the downspout back onto a 6x6, wall straps, an A-elbow shoe and a splash block at grade. Gutter guard is a perforated aluminium screen sitting just below the lips.

Also called: gutters · downspouts · K-style · gutter guard · leaf guard · splash block

1. 1Runs are computed per eave and hung on the fascia face at the correct roof-edge height for the shape — gambrel and monitor ride the LOWER or wing slope, and a mansard hangs on the 21/12 face rather than the roof.
2. 2A lean-to on a sidewall REPLACES that stretch of main eave, so the trough breaks around it; leftover stubs overlap the lean-to by a foot so the main gutter does not die on its first rafter.
3. 3Downspouts drain at building corners, never at a lean-to junction, and lean-to and porch drops sit on the end 6x6s with a B-elbow kicking back under the overhang.
4. 4Gable porches get LEVEL gutters on both eaves with a K-style corner and a short return across the front of the post.
5. 5The finish-floor height of the shoe and splash block follows the slab thickness, so they are not buried in the pour.
6. 6Quantity is the summed run length; gutter guard bills the same linear feet as an upsell over the open trough.

• ◆Gutter linear feet estimated off the perimeter instead of the eaves.
• ◆Downspouts drawn in places a carpenter would never hang one.