Guide · 7 min read · Updated 2026

How to Stop Water Coming Through Basement Foundation Walls

Damp basements are common in older Boston-area homes. Start with the simple fixes before expensive systems.

Step 1: Manage surface water

Clean gutters, extend downspouts 6–10 feet, and grade soil away from the house.

Step 2: Repair the masonry

Repoint open joints, seal cracks, and re-parge exterior surfaces.

Step 3: Evaluate drainage

If water persists due to high water table, interior perimeter drainage and a sump may be needed.

Frequently asked questions

Do interior waterproofing paints work?

They help only with minor dampness.

Why is my basement wet only in spring?

Snowmelt and rising groundwater.

Do you install sump pumps?

We handle masonry and refer drainage specialists.

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