Exterior & interior waterproofing
Water out. For good.
Exterior membranes and interior drainage systems, chosen for your house, not for the biggest invoice.
5-star Google reviewsFamily-owned & operatedOur own crew, never subcontractors

Is this you?
Signs you need exterior & interior waterproofing
- Water on the floor after heavy rain or thaw
- Damp, stained or chalky white walls
- A musty smell that won't leave
- Finishing the basement and want it dry first
How we fix it
What actually happens
- 01
Find the way in
We trace where water is actually entering. Sometimes a crack, sometimes grading, sometimes the whole wall.
- 02
Pick the right system
Exterior: excavate, membrane, drainage board, new weeping tile. Interior: drainage channel to a sump. We tell you which and why.
- 03
Install & restore
Clean excavation, proper backfill and compaction, site put back the way we found it.
What it costs
Priced in writing, after we've seen it.
What moves the price
- Exterior or interior system
- Linear feet of wall and depth
- Access: decks, driveways, AC units, tight lots
How we quote
Exterior and interior systems are priced very differently. You'll get a written, fixed quote for the one that fits, with the other explained if it's an option.
Why AVH
Three reasons homeowners pick us for this
- We install both systems, so we recommend instead of upsell
- Same crew handles structural work if we find more
- Written warranty
Questions
Asked about exterior & interior waterproofing
Interior or exterior?
Exterior stops water before it touches the wall and is the most permanent fix. Interior manages water that gets in and suits finished basements or tight lots. We recommend the one that fits.
How long does it take?
Exterior work runs a few days per wall; interior systems are usually quicker. You'll get a schedule with your quote.
Will you wreck my yard?
We dig only what's needed, protect what we can, and backfill and compact properly. Plantings directly over the trench will need replacing.
Related
Often done together

Just one leaking crack?
See Basement Worx Basement Worx injects it from inside, usually in a day. Same family, no digging.
Cracks don't fix themselves. Let's look before it costs more.
A free, no-pressure assessment from the people who'll actually do the work.
