Portland · Cumberland County
Interior Drainage Systems in Portland, ME
Portland's peninsula cellars were dug into ledge and dense till, so groundwater slides along the rock and seeps in where the floor meets old granite or brick walls.
By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.
Portland interior drainage systems: call now
(833) 460-4463By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.
Local conditions
Why is interior drainage systems needed so often in Portland?
Portland's peninsula cellars were dug into ledge and dense till, so groundwater slides along the rock and seeps in where the floor meets old granite or brick walls. An interior drain intercepts that water at the base of the wall without disturbing tight lots or shared driveways outside.
How is interior drainage systems done in Portland homes?
In stone cellars the channel is cut along the perimeter, perforated pipe is set in washed stone, and a dimpled membrane is fastened to the wall to guide seepage down into the drain. The water goes to a sealed sump that discharges well away from the foundation.
What should Portland homeowners know before booking water at the floor-wall seam work?
Because many West End and Munjoy Hill homes have finished first floors over unheated cellars, a dehumidifier is usually added once the drain is in, so the cellar stays dry enough for storage and mechanicals through humid coastal summers.
Warning signs, the full process and cost drivers are in the interior drainage systems guide.
What do Portland homeowners ask about interior drainage systems?
Can interior drainage be installed under a granite cellar floor in Portland?
Yes. Contractors cut or break out the perimeter of the floor, which is often thin concrete over stone or dirt, and pour new concrete over the drain once it is installed.
Where should the sump discharge on a small peninsula lot?
To a spot that drains away from your house and your neighbor's, often a yard drain or curb outlet where the city allows it, never into the sanitary sewer.
Where can I verify this information about Portland, ME?
- 1FEMA: Flood Map Service CenterCheck whether a property in Portland, ME is in a mapped flood zone before finishing a basement.
- 2USDA Natural Resources Conservation Service: Web Soil SurveyLook up soil drainage class and shrink-swell potential for any lot in Portland, ME.
- 3U.S. Environmental Protection Agency: RadonWhy basements in Portland, ME should be tested for radon, and how sealed sumps fit with mitigation.
- 4U.S. Environmental Protection Agency: MoldGuidance on moisture control and keeping indoor humidity low to prevent mold.
- 5Federal Trade Commission: Hiring a ContractorWhat to check before hiring: licensing, insurance, written estimates and payment terms.
Service area
Where else near Portland is this available?
Related
What other services do Portland homeowners need?
Sump Pump Installation & Repair
Sump pump service installs a sealed pit and pump where groundwater collects, replaces failed pumps and switches, adds battery or water-powered backups, and routes the discharge line well away from the house so it doesn't freeze or recirculate..
Learn more
Exterior Foundation Waterproofing
Exterior waterproofing excavates soil down to the footing, cleans and repairs the wall, applies a waterproof membrane and drainage board, and installs new footer drains before backfilling.
Learn more
Leaking Wall Crack Repair
Leaking crack repair seals non-structural cracks in poured concrete walls, usually by injecting flexible polyurethane that expands to fill the crack through the wall's full thickness.
Learn moreGuides
What should Portland homeowners read first?
Need interior drainage systems in Portland?
Hydrostatic pressure, failed clay tile.
By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.