Keeping our rain
out of your house.

Water against a wall always finds a way in.

Concrete is not waterproof, and in Whatcom County the ground holds water against your foundation for months at a time. If there's no drainage at the footing and no waterproofing on the wall, that water finds the path of least resistance: a crack, a cold joint, or straight up through a slab into the crawlspace. We fix it from the outside where it counts, with exterior waterproofing membrane on the wall, a perforated footing drain in clean gravel, and a discharge that actually carries the water away from the house.

Inside, a wet crawlspace usually needs a French drain, a sump system, and a vapor barrier over the ground to break the cycle. Homes right on Lake Whatcom in Silver Beach and out in the river-valley flats in Ferndale see the worst of it because the water table sits high all winter. What drives the cost is how deep we have to dig, how easy the wall is to get to, and how long the drain run is, which puts most jobs in the $4,000 to $15,000 range.

What it actually costs.

Our four-step process.

1. Find where the water comes in

   We look at the crawlspace, the wall, and the grade around the house, and figure out where water is getting in and where it should be going instead.

2. Excavate to the footing

   Where the fix is exterior, we dig down to the footing along the affected wall so we can waterproof and drain it properly.

3. Waterproof and drain

   We apply waterproofing membrane to the wall, set a perforated footing drain in clean gravel, and run a discharge that carries water away from the house.

4. Interior drain and sump

   For a wet crawlspace we add a French drain, a sump system, and a ground vapor barrier, then backfill and grade so the surface sheds water too.

Why hire us for waterproofing and drainage.

• Exterior waterproofing and footing drains, not just an inside patch
• Footing drain set in clean gravel with a real discharge line
• French drains, sump systems, and vapor barrier for wet crawlspaces
• Grading fixed so surface water sheds away from the house
• Built for the months of saturated ground we get here

Frequently asked questions.

How much does foundation drainage and waterproofing cost in Bellingham?

Foundation waterproofing and drainage in Bellingham runs $4,000 to $15,000. The drivers are how deep the footing sits, how easy the wall is to reach, and how long the drain run is. An exterior footing drain on an open wall is a different job from a tight, deep dig with a sump system. We give you a written, line-item quote after we see the site.

How do I keep water out of my crawlspace?

The lasting fix is a combination: a footing drain and exterior waterproofing where the water is getting in, a French drain and sump inside if the crawlspace is already wet, a vapor barrier over the ground, and grading so surface water sheds away from the house. Pumping alone treats the symptom; draining the water at the footing treats the cause.

Why are wet crawlspaces so common in Bellingham?

Our rain keeps the soil saturated for months, so the water table stays high, and a lot of Bellingham's older homes were built with little or no foundation drainage. Homes right on Lake Whatcom in Silver Beach and out in the Ferndale flats see it worst. The fix is real drainage at the footing plus interior sump and vapor barrier, not just a coat of sealant.

Related services.

Foundation Waterproofing & Drainage across Whatcom County.

We waterproof and drain foundations across Whatcom County, with the heaviest work on the lakeside lots in Silver Beach and the high-water-table flats in Ferndale. Pick your area for local notes: