Botanic Garden >> Gardening > >> Question and Answer >> Landscaping and Design

Fixing Water Seepage Through Block Foundation Walls

Two issues: 1) Grade must slope away 6-10 ft (3-5% slope). Use a swale if space is tight. 2) Waterproof foundation: fluid-applied membrane, 6-mil plastic, 1/2-inch rigid foam, drainage mat, and French drain to daylight or storm sewer. Hire a foundation waterproofing specialist.

Landscaping and Design: Saving a Stephanotis from Sudden Leaf Drop; Hardie Controller Dead Display, Zone 1 Stuck On; Foundation Shrubs Help, Not Hurt, Wet Basements: Planting for Drainage; Water Seeping Through Foundation Walls: Regrade, Don't Just Drain; Drainage Solutions for a Townhouse Backyard With Limited Access; Major Water Retention: French Drain vs. Water-Tolerant Planting; Fixing Basement Flooding from Backyard Slope: Three Options; Solving Backyard Drainage That Threatens the Foundation; Front Yard Landscape Refresh in Frederick, MD: Sturdy Plants for Zone 6b; Ming Aralia Rust Spots: Water Quality and Soil Moisture

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