Alpharetta, Georgia
Crawl space and basement waterproofing in Alpharetta
From Alpharetta, the number on this page reaches an independent local waterproofing company that works on both sides of the Roswell line. Two local points are worth knowing before the visit.
You talk with an independent local waterproofing company. Roswell Crawl Space is a referral service and does none of the work itself.
Street water and house water are separate calls
If the water reaching your yard comes off the road or out of a storm inlet, tell the city. Alpharetta takes reports of blocked or overflowing stormwater drains and uncontrolled runoff through a form on its report page or by phone at 678-297-6200.
Water that starts on your own lot is a different matter. Roof runoff, a yard that leans toward the house, damp air under the floor: none of that is the city's to solve. That is the work a waterproofing company inspects and prices.
It helps to know which you have before anyone visits. Stand outside in the next hard rain and watch where the flow begins.
Creeks here come up quickly
Alpharetta's floodplain information page warns that the city is prone to flash floods, with streams and creeks rising out of their banks in short order. For a house near Big Creek or one of the branches that feed it, that changes how a drainage system should be laid out.
A sump discharge or a French drain outlet that points toward low ground beside a creek works on an ordinary wet day. When the creek is up, the outlet can sit under water and the pipe has nowhere to empty. Ask the company where the outlet will end, how high it sits above the creek bank, and what stops water running back up the pipe.
- Look up your address on FEMA's flood map before agreeing to outdoor drainage.
- Ask whether the pump discharge has a check valve close to the outlet as well as at the pump.
Which pages to read next
For damp, musty air under the floor, go to crawl space encapsulation. For water on a basement floor after rain, basement waterproofing. For a yard that will not drain, yard drainage.