Basement Waterproofing Services in Connecticut

We provide professional basement waterproofing services across Connecticut, protecting homes from mold, water damage, and surprise leaks that never seem to go away. With over 9 years of experience, Alpha Waterproofing is one of Connecticut’s trusted waterproofing experts. 

If it’s a small crack or a full-blown flood, we are the basement waterproofing company Connecticut homeowners call when they want a job well done.

We work in all 169 towns and finish most jobs in 1 to 3 days. Our team is ready 24/7 to help keep your home safe and dry.

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Complete Basement Waterproofing Solutions in Connecticut

We provide professional interior and exterior basement waterproofing across Connecticut, built for your home, your foundation, and the challenges of New England weather. Our expert solutions protect against mold, water damage, and persistent leaks that never seem to go away.

Foundation Crack Repair by Alpha Waterproofing Connecticut
Sump Pump System Installation to Keep your basement safe from flooding

Interior Basement Waterproofing

Water inside your basement? We stop it at the source. From standing water to sweating walls, we will design a custom system that keeps your basement dry year-round and your foundation protected from the inside out. Our interior waterproofing solutions include:

  • Interior drainage systems
  • Sump pump installation
  • Vapor barriers
  • Moisture-resistant wall coatings
  • Crack and tie rod leak repair

Exterior Basement Waterproofing

When water pressure builds up outside your foundation, it’s only a matter of time before it finds its way in. Our exterior waterproofing systems defend your home before moisture ever makes it inside. This is full-scale protection from the elements, designed for Connecticut soil, slopes, and storms.

  • Excavation and exterior sealing
  • Foundation wall membrane application
  • Exterior drain tile systems
  • Downspout and gutter corrections
Exterior Waterproofing Walls
Alpha offer Sump Pump System Installation Service

The Alpha Difference: A Final Fix

Free Inspections

We crawl, tap, test, and actually explain what’s happening behind your walls. If we find nothing urgent? We will tell you. If we spot something serious? You will know exactly why, and what it will take to fix.

Solutions Built for Your Basement

Your house has its own story and its own weak spots. We dig (literally) to find out what’s really going on, then design a system that fits your space.

Permanent Repairs That Hold Up

Your house has its own story and its own weak spots. We dig (literally) to find out what’s really going on, then design a system that fits your space.

Respectful, Professional Work

Shoes off. Tools organized. Drop cloths down. We tidy up every step of the way and make sure your home looks better when we leave than when we arrived.

Warranties That Mean Something

Our warranties are backed by a name, a number, and someone you have actually met. If you ever have a problem, call us and we will answer.

People Also Ask

How do I know if my basement actually needs waterproofing?

If your basement smells like a gym locker, feels damp, shows stains on the walls, or gets water after it rains, that’s not normal. Connecticut homes take a beating from the weather, and even small warning signs mean it’s time to get it checked out. We offer free inspections, no pressure.

What causes basement leaks in Connecticut homes?

Everything from heavy rain and melting snow to poor drainage and old construction. In CT, we also deal with hydrostatic pressure (when groundwater pushes against your foundation) and that’s a recipe for cracks and water intrusion if not properly handled.

Do I need interior or exterior waterproofing? Or both?

It depends on what your home needs. Interior waterproofing is great for managing water that’s already made it in, while exterior systems stop it before it gets there. We assess your situation and recommend what will actually fix the problem, not just what's easy to sell.

Will waterproofing my basement stop the musty smell?

Yes, if the odor is from hidden moisture, mold, or leaks (which it often is), a proper waterproofing system will dry it out and stop the smell at the source. We can also apply moisture-resistant coatings and treat any areas with lingering mold.

Can you waterproof an unfinished basement?

Yes. In fact, it’s often easier and more cost-effective. If your basement is finished, half-finished, or bare concrete, we’ll protect it from leaks and moisture with the right solution for your space.

How long does the basement waterproofing process take?

Most jobs are wrapped up in 1 to 3 days, depending on your basement’s size and the scope of the fix. We work efficiently, stay out of your way, and make sure it’s done right the first time.

Does Alpha Waterproofing Basement offer warranties?

We stand behind our work with strong warranties because we believe if we fix it, it should stay fixed. Our commitment to long-term results backs every system we install.

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