Are Gutters Required By Code

Gutters are not required by the international residential code irc or the residential edition of the florida building code fbc with two exceptions.

Are gutters required by code.

Plumbing codes typically use the vertically projected roof. From my cursory knowledge of building code gutters are never explicitly required although r 801 3 requires some controlled method of drainage 5 ft from the foundation walls or to an approved drainage system. Do southern california homes need rain gutters. Downspouts and gutters are sized in relation to rainfall on this basis.

1 if the roof overhang eave is less than 6 inches. On the other hand section r405 1 does require foundation drainage and provides fairly elaborate direction due to the importance of keeping basements dry. Drive around any neighborhood in san diego los angeles riverside or orange county and you are going to see some homes that have full gutter systems some that have partial gutters and some with no gutters at all. They are generally not required by law on a sloping roof and many modern homes omit them even in instances where they are beneficial.

2 if the home has a footing and foundation wall not a thickened edge concrete slab foundation like most newer homes and is in an area that has expansive clay or collapsible soils. International energy conservation code iecc climate regions. It takes 96 15 square feet 8 93 square meters of surface with 1 inch per hour 25 mm hr of water to correspond with 1 gpm 0 063 l s flow rate. Sunday august 23 2020.

Chapter 8 code of miami dade county requires that roof slope drains gutters crickets and overflow scupper calculations appear on the framing plans. Gutters and downspouts are not required in dry b climates as shown in the iecc climate zone map 2009 iecc figure 301 1 and table 301 1. Local codes may require that drainage systems only be designed for the latter.