Guides for homeowners

Written for people with a wet basement, not for search engines. If one of these stops you buying a drainage system you did not need, it has done its job.

The Guides

Five Things Worth Knowing

How to Compare Waterproofing Quotes

Not the prices — the quotes. What a real one contains, the five questions that expose a bad one, and why the cheapest number frequently covers the least.

Old Stone Foundations: What’s Normal

A two-hundred-year-old cellar has always been damp. Which damp is normal, which is a problem, and why sealing one is the most expensive mistake available.

Getting Ready for the Melt

A month-by-month plan from October to April, and why the work itself belongs in July.

Sump Pump Buying Guide

What actually matters when choosing one for a New Hampshire basement, and the components people forget until the night they need them.

Selling a House With a Wet Basement

Disclose, fix, or price it in — and why an undocumented problem costs a seller more than a documented one.

Or start with a symptom

Water after rain, spring flooding, a crack, a musty smell, a sump that never stops.

Tools & Data

Or Work It Out Directly

Wet Basement Diagnostic

Where, when and what the foundation is — and out comes the likely cause and an honest cost band.

Crack Triage

Four patterns illustrated, with an honest verdict on each.

Sump Sizing

Capacity class for your basement, plus a straight answer on battery backup.

Why NH Basements Get Wet

Water tables, snowmelt, frost depth and fieldstone — with cost benchmarks.

Get a Free Assessment

Tell us the foundation type and when the water shows up — that second answer narrows it more than anything else you can tell us. Every cause on this site has a different fix, and we would rather identify yours than sell you the same job we sold the last person.

We reply to every request within 1 business day.

  • Free written assessment — no charge to look
  • We tell you when the fix is outside rather than inside
  • Honest about old stone foundations — managing beats sealing
  • No scare tactics, and no structural claims we are not qualified to make
Free Assessment