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TRUSTED BY SANDY, OR HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon31
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Sandy

Avatar for John's Waterproofing
John's Waterproofing
4.3(
251
)

Serving Sandy, OR and surrounding areas

Approved

In business since 1974

Free estimates

Warranties offered

"I was glad John's Waterproofing was recommended to me to resolve the serious water problem in my large crawl space. With Jake's Design and Jeremy's remarkable crew, who were able to efficiently perform the many tasks needed to fix the problem, I now have a dry, clean and healthier crawl space under my home. Thanks to John's superb 5 star Company! Virginia Rossman"
Trim around fireplace was removed and mold found along the base
Fiberglass was drooping away from the home, removing its insulation value
Fiberglass Insulation was falling down in clumps from water weight
This window had been upgraded and given trim to give a clean and finished look
Re removed the below-grade sections of the wall and waterproofed with ThermalDry Radiant vapor barrier and installed a drain system around the interior perimeter

+41

17 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Better Basements and Waterproofing
Better Basements and Waterproofing
5.0(
10
)

Serving Sandy, OR and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Dylan Milroy went in and cleaned out the crawlspace put down plastic and dug a french drain and redirected all the downspouts so that the rain and we had now more water being drained. He is super easy to work honest he follows up to see if you are satisfied with his work.. I recommend him to everyone."
12mil vapor barrier
12mil vapor barrier
Standard Vapor Barrier
Exterior Drainage
Exterior Drainage

+3

2 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for John's Waterproofing Co.
John's Waterproofing Co.
4.0(
71
)

Serving Sandy, OR and surrounding areas

Approved

In business since 1974

Free estimates

Warranties offered

"Friends who know what our basement looked like before are flabbergasted. The information they send you after you contact them is super educational and everyone was prompt, polite, and professional. Wish we'd done this sooner."
Encapsulation System
Before Encapsulation
Before Interior Drain System
After Interior Drain System
Finished basement

+38

221 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Crawlspace Masters, Inc.
Crawlspace Masters, Inc.
4.9(
94
)

Serving Sandy, OR and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Overall the Crawlspace Crew did some great work for our basement area. The initial phone call was very informative, then they came on-site for a walk-thru and provided an itemized estimate we could understand. We expressed that budget was a concern and only elected to do some of the work, they were supportive of this and we were scheduled in within a week. The work was completed in a timely and thorough manner and we are very satisfied. Shout out to Dillon, for working within our budget, and being flexible on the specifics, I would definitely recommend this company/service to a friend or anyone in need."
After
After
After
After
After

+216

Response time30 mins
57 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for TerraFirma Foundation Systems
TerraFirma Foundation Systems
4.1(
100
)

Serving Sandy, OR and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"The problem ended up being plumbing and not waterproofing. But TerraFirma did a consult right away, diagnosed the issue quickly and was really helpful in figuring out the next steps. I really appreciate their time."
A System Design Specialist helping a homeowner
Encapsulating a crawl space
Fleet of vehicles in our Portland, Oregon locatio
Loading up our truck for a piering job
Loading up a truck for a waterproofing job

+33

115 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for D & F Plumbing, Heating and Cooling
D & F Plumbing, Heating and Cooling
4.2(
513
)

Serving Sandy, OR and surrounding areas

Approved (Corporate)

In business since 1927

Emergency services offered

Warranties offered

"Our shower was leaking into the basement. Azzi was able to come out the same day to diagnose the problem and schedule service. He was professional, friendly, tidy, and completed the substantial work in one day. He explained everything in terms we could understand. His work was excellent! We feel that we received quality and long-lasting solutions to our plumbing problems. We can't recommend D & F Plumbing enough. Ask for Azzi!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+18

8 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Legacy Plumbing and Excavation, LLC
Legacy Plumbing and Excavation, LLC
4.5(
74
)

Serving Sandy, OR and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Well, it's fixed. A learning experience ? get many bids and make sure the company wants your business. Pros ? Technicians were polite and respectful of my home while I worked in meetings all day. ? The pooling water issue in the basement was resolved, and the floor is now dry; the work was ultimately completed. ? Initial estimate visit was free, but not thorough ? Senior staff came out later to apologize and review the work. Cons ? Pricing was far higher than industry norms based on later bids. ? Avoidable scope changes and price increases after work began; two other plumbers said the job could have been done as originally quoted. ? Communication issues (delayed quotes, unclear explanations, forgotten site details). ? Work quality/finishing didn?t match the premium price; two professionals asked if we had done the work ourselves. Added pictures because I don't know plumbing, so you decide if you'd want this. ? Extra fees add up: 10% financing fee (Synchrony) and 4% credit card fee."
Sewer Repair
Excavation & Sewer
Response time6 hrs
655 neighbors recently requested a quote
Recommended by39%of homeowners
Avatar for Wolcott Plumbing
Wolcott Plumbing
4.3(
12
)

Serving Sandy, OR and surrounding areas

Approved

In business since 1985

Free estimates

Small jobs welcome

*CURRENT SPECIALS: TANKLESS WATER HEATER INSTALLATION STARTING AT $5999 & 40% OFF DRAIN CLEANING AND DRAIN REPAIR* \n\nFor over 40 years, Wolcott Services has been Portland’s trusted partner for plumbing and drain solutions. We understand how stressful it can be when something goes wrong with your home’s vital systems, which is why our licensed experts respond quickly, diagnose accurately, and deliver lasting repairs. From clogged drains and sewer backups to water heater installs and whole-home plumbing upgrades, we’re here to help you restore comfort, protect your home, and get life back to normal.

Project Photos
Sewer Replacement
Current Specials & Deals
13 neighbors recently requested a quote
Avatar for Roots Plumbing LLC
Roots Plumbing LLC
5.0(
2
)

Serving Sandy, OR and surrounding areas

Approved

In business since 2024

Warranties offered

Credit card accepted

Roots Plumbing LLC knows how important time is to you. Our experienced and professional team will get to the root of your plumbing issues with top quality service and products to save you time and money so you can get on with your day worry free.\n\nwww.rootsplumbingllc.com\n\nhttps://g.page/r/CcSNBQIWtQHgEBM/review

Water Heater Upgrade
Water Heater Upgrade
Water Heater Upgrade
Additional Photos
Additional Photos

+32

Recommended by50%of homeowners
Avatar for Foundations First Northwest, LLC
Foundations First Northwest, LLC
5.0(
1
)

Serving Sandy, OR and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

Thousands of NW homeowners have trusted Foundations First Northwest to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! Foundations First is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

Sump Pump
High Traffic Drain
Trench Drain
Rain Drain Extension
Basecrete

+13

Response time1 day
6 neighbors recently requested a quote
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Basement Waterproofing questions, answered by experts

Yes, usually you will need some kind of vapor barrier on the exterior walls when the framing is attached to concrete and masonry surfaces.

Yes, slab leaks are fairly common, especially in older homes and places that are prone to earthquakes which can move home foundations.

Generally, moisture barrier padding costs $0.75 to $1.50 per square foot, varying by brand and mix. That’s a lot more than standard padding, which runs $0.25 to $0.90 per square foot. The price difference between these two options might seem steep, but think of it as insurance against future carpet replacement costs and subfloor damage. If you have pets or kids, that extra investment in high-risk areas like your living room often pays off.

The best basement waterproofing method depends on the specific issue causing the water intrusion. For minor problems, simple solutions like installing a properly functioning gutter system to direct runoff away and grading the soil to slope away from your foundation can be effective.

If you have more significant water problems, the solution will need to be more robust:

  • For standing water on the basement floor, a floor drain or a sump pump system may be the best solution.

  • For water pooling around the foundation, installing an exterior French drain can intercept water before it reaches the basement walls.

Other effective waterproofing methods, which can be used depending on your home's specific needs, climate, and soil type, include sealing the interior walls, landscape alteration, installing interior drainage systems, and using a dehumidification system to control moisture levels.

A vapor barrier can last over 20 years, but they are vulnerable to pests, flooding, and other natural disasters. If your home weathers a storm or is treated for any pest infestation, make sure to have a drywall pro come check the integrity of your vapor barrier. It’s also important to have a pro install a vapor barrier since improper installation can lead to tears or leaks in the barrier that shorten its lifespan.

The Sandy, OR homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.