Roof Drain Disconections

Installation charge will vary depending on work site conditions.

Roof drain disconections.

Illegal roof drains sump pumps and foundation drains connected to the city s sanitary sewer system sends groundwater to the sewer treatment plant consuming expensive wastewater treatment capacity. You may have more than one option for directing each downspout. Proper roof drain connection. Be at least 10 of the roof area that drains to the downspout you are disconnecting.

Shop for roof drains at ferguson. Property owners need to disconnect these prohibited connections or be willing to pay for future treatment plant expansions. If you are improperly connected to the sanitary system the high flow of relatively clean storm water coming off your roof can cause the sanitary sewer system to overflow. Determine 100 year 1 hour rainfall rate used for location of building.

Using tools from the international plumbing code ipc it s not that hard. Ferguson is the 1 us plumbing supply company and a top distributor of hvac parts waterworks supplies and mro products. Improper roof drain connection why is roof drain disconnection important to you. Getting water off a building s roof is important but how do you know what size drain to use to provide adequate drainage.

Ipc provides four steps to size the roof drains on a building. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. Smith carefully designs and manufactures a full line of roof drains deck drains scupper drains promenade and parking area drains and more to satisfy both the artistic eye of the architect and the calculating mind of the engineer. During rainstorms this additional clear water can overwhelm sewer pipes and mmsd s treatment plants which can lead to street flooding basement sewage backups and sewage overflows directly into our neighboring waterways.

For example to drain 500 square feet of rooftop there should be at least 50 square feet of landscape. Brittle tar will crack and leaks will occur. A possible sanitary sewer overflow can cause sewer backups and basement flooding. Contact an outside sewer and water contractor to evaluate the site and design a plan for disconnecting from the sanitary sewer and connecting to the storm drain in the street.

Roof drains must be firmly secured to the roof with an underdeck clamp otherwise due to snow loads rain loads and reg ular expansion and contraction the drain will work in and out of the roofing causing roofing membranes to flex and fail.