Floor & Wall Sealing in Massachusetts

Stop water seepage and protect your basement with professional floor and wall sealing from Key Waterproofing. Call (617) 347-0139 today to book your free inspection.

Why Floor & Wall Sealing Matters

Basement floors and walls are constantly under pressure from groundwater. Small cracks or porous surfaces allow moisture to seep in, causing:


  • Damp spots or puddles on floors
  • Musty odors and mold growth
  • Paint bubbling or peeling
  • Structural damage over time


Our floor and wall sealing services in Massachusetts provide a strong, waterproof barrier that locks out moisture and keeps your basement dry, safe, and usable year-round.

Person in yellow shirt painting a wall with a roller. Wearing a white cap and black gloves, indoor setting.

Why Choose Key Waterproofing?

Advanced sealing products – crystalline coatings, epoxy, and waterproof membranes.

Permanent moisture barrier – prevents leaks before they start.

Protects finished basements – ideal for homeowners planning remodeling or storage.

Local expertise – experience sealing concrete in New England’s damp climate.

Comprehensive solutions – combine with drainage, sump pumps, or crack repair for total protection.

Our Floor & Wall Sealing Solutions

  • Crystalline Application – penetrates deep into concrete to block water at the source.
  • Epoxy & Polyurethane Coatings – creates a smooth, water-tight finish.
  • Surface Crack Sealing – closes gaps where water enters.
  • Wall & Floor Joint Sealing – protects vulnerable edges and seams.
  • Preventive Waterproofing – shields against future leaks and damage.

Service Areas We Cover

We offer floor and wall sealing services throughout Massachusetts, including:


  • Holbrook, MA
  • Boston, MA
  • Worcester, MA
  • Lowell, MA
  • Springfield, MA

…and surrounding communities.


When homeowners search for a floor and wall waterproofing contractor near me, Key Waterproofing is the trusted name across Massachusetts.

Protect Your Basement Today

Don’t wait until water damage ruins your basement. Call Key Waterproofing now at (617) 347-0139 for a free inspection and expert waterproofing solution.



Key Waterproofing — Floor & Wall Sealing Specialists in Massachusetts.