Get matched with top basement waterproofing pros in Waimea, HI

Q: What is crawl space encapsulation and what are the negatives?

• <div><p>The only real negative when encapsulating a crawl space is that the cost is high. It can cost several thousands of dollars to do this project. However, it protects your house and those in it by providing an energy-efficient space instead of one that frequently pools moisture and causes damage through <a href="https://www.angi.com/articles/black-mold-lurking-your-house.htm">mold growth in your home</a>. While less common, another disadvantage could be encapsulation making access to pipes and electrical slightly more complicated in certain crawl spaces.</p></div>

Q: What costs should I expect for waterproofing or encapsulating services?

• <div><p>Costs depend on the area's size and condition, damage extent, and chosen method. A professional evaluation provides a tailored estimate based on specific needs.</p></div>

Q: Does a basement need ventilation to reduce humidity?

• <div><p>Proper basement ventilation is very effective at reducing humidity. Without enough ventilation, your basement is prone to mold and moisture damage. Your basement should have as much natural ventilation via windows and doors as possible, and if your budget allows, you should also consider installing an ERV system to keep basement humidity levels at bay.</p></div>

Q: Can you over dehumidify a house?

• <div><p>Yes, you can over dehumidify your house. While you may prefer a dryer climate inside, the elimination of too much moisture in the air can lead to an extremely dry environment that can affect those with respiratory and skin issues. Strike a balance between eliminating excess moisture without making your home feel like a desert. Most modern thermostats show the humidity levels for guidance.</p></div>

Q: What maintenance is needed after waterproofing or encapsulation?

• <div><p>Regular inspections, maintaining proper grading around the foundation, and keeping gutters clear are advisable. Vapor barriers and sealants may need checking for wear after several years.</p></div>

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Verified Reviews for Basement Waterproofing pros in Waimea, HI

*The Angi rating for Basement Waterproofing companies in Waimea, HI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Waimea, HI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on November 26, 2025

Reviewed in November 2021
Matt and his crew did an amazing job on my main bathroom! They did the demo, waterproofing, tiling, vanity, toilet, and fixture installation within a couple weeks. It looks beautiful! Highly recommend hiring this team!
Hawaii Design & Development, LLC
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Reviewed in December 2018
The work was done quickly and efficiently. I was concerned about the right space and removing a large a keeper sofa from the bAsement up narrow stairs. But two workers removed sofa without touching the walls wood railiNgs or stairs.
Eco City Junk
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Reviewed in December 2015
Adrian was more than helpful on the phone and was willing to discuss my options and provide opinions. He educated me and helped me make a good decision that fit my needs. He then came in for the on-site visit to check out the job site and prepare a quote. The follow up with his office was...
Pinney Plumbing and Heating
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Reviewed in January 2015
Belmonte's Roofing and Waterproofing failed my due diligence research so I chose to use a different contractor. They may provide acceptable work but I could not be comfortable using them after my findings
Belmonte's Roofing & Waterproofing
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Reviewed in January 2014
on day of install, their trucks blocked our neighbor's driveway and they would not move to allow them access/after install, i found TONS of roofing nails on the ground,in the gutters and on branches of potted plants/old shingles not picked up-strewn all over perimeter of roof/large pieces of...
TROPICAL ROOFING & RAINGUTTERS
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Reviewed in August 2013
Overall, I was very happy with the process from the initial phone call to the final safety inspection. I had done my homework by getting three contractors from Angie's List and HomeAdvisor (sorry Angie, just doing due diligence) to provide quotes so I could then compare and contrast. The...
Dena Electric
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Reviewed in September 2012
I needed 2 dedicated electrical outlets for new sump pumps installed in my basement, so I called the Rockville office of Certified Electrical Technologies--a company that had previously installed a whole house surge protector for me. The phone rang for a long time, and the man who answered the...
Certified Electrical Technologies
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Reviewed in September 2012
After the derecho thunderstorms in late June, I noted that my (unfinished) basement walls were wet to the touch near the floors and in certain areas water dripped from the insulation covering. There was no standing water, but I'd owned other houses and have had trouble with water leaking into...
Basement Innovations Waterproofing
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Reviewed in February 2010
Outstanding effort. We have a new home built in late 2008. We moved in in Jan 2009. Since moving in we've had issues with our bathroom outlets not working, or if they did work, tripping the breaker at the slightest load. I had the builder over to check the circuits, but he found no problems...
Staples Electric LLC
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Reviewed in October 2009
The sales rep was really patronizing and smug. His sales approach was long, repetitive, and fairly aggressive. He ripped into his competitors and used scare tactics that implied my house would collapse if I didn't fix the problem immediately with his wonder sump pump. I couldn't really pin him...
Aquaguard Waterproofing
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Find Basement waterproofing pros in Waimea

MRC Roofing, LLC

4.63(

)

MRC Roofing, LLC

4.63(

)

Customers say: Super punctual

Recommended by 94% of Angi customers

Additional email - [email protected].

"We needed a new roof 26 years after MRC had last done our roof. We worked with Mark Hill to find a roof coating that would cool our house. He recommended a product called Permalock Metal roofing and a silicone coating for our flat roof. We have had the roof for 1 year and this summer has been nice and cool. Thank you to the team at MRC."

Ellen C on September 2021

Additional email - [email protected].

"We needed a new roof 26 years after MRC had last done our roof. We worked with Mark Hill to find a roof coating that would cool our house. He recommended a product called Permalock Metal roofing and a silicone coating for our flat roof. We have had the roof for 1 year and this summer has been nice and cool. Thank you to the team at MRC."

Ellen C on September 2021

Basement Waterproofing questions, answered by experts

The only real negative when encapsulating a crawl space is that the cost is high. It can cost several thousands of dollars to do this project. However, it protects your house and those in it by providing an energy-efficient space instead of one that frequently pools moisture and causes damage through mold growth in your home. While less common, another disadvantage could be encapsulation making access to pipes and electrical slightly more complicated in certain crawl spaces.

Costs depend on the area's size and condition, damage extent, and chosen method. A professional evaluation provides a tailored estimate based on specific needs.

Proper basement ventilation is very effective at reducing humidity. Without enough ventilation, your basement is prone to mold and moisture damage. Your basement should have as much natural ventilation via windows and doors as possible, and if your budget allows, you should also consider installing an ERV system to keep basement humidity levels at bay.

Yes, you can over dehumidify your house. While you may prefer a dryer climate inside, the elimination of too much moisture in the air can lead to an extremely dry environment that can affect those with respiratory and skin issues. Strike a balance between eliminating excess moisture without making your home feel like a desert. Most modern thermostats show the humidity levels for guidance.

Regular inspections, maintaining proper grading around the foundation, and keeping gutters clear are advisable. Vapor barriers and sealants may need checking for wear after several years.

The Waimea, HI homeowners’ guide to basement waterproofing services

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

See all articles

Dan Simms
•
Oct 17, 2025Oct 17, 2025
How Much Does Crawl Space Encapsulation Cost? [2025 Data]
A variety of factors can affect your total crawl space encapsulation cost. Here’s a breakdown of the cost of this project, whether you hire a pro or DIY.
Dan Simms
•
Nov 3, 2025Nov 3, 2025
How Much Does Crawl Space Repair Cost? [2025 Data]
Crawl space repair costs can seem intimidating, but putting them off can lead to bigger issues. Learn about repair costs in this guide to set your budget.
Angi
•
Oct 20, 2025Oct 20, 2025
How Much Does Sump Pump Installation Cost? [2025 Data]
Discover how much sump pump installation costs, including average prices, key cost factors, and tips to save on your basement waterproofing project.
Lauren Bongard
•
Jul 29, 2024Jul 29, 2024
What Damage Can a Flood Cause? What You Need to Know to Protect Your Home
Even small floods can wreak havoc outside and inside your home. Learn what damage a flood can cause, how to prevent the worst of it, and what to do after flooding.
Dan Simms
•
Nov 5, 2025Nov 5, 2025
What Is Basement Waterproofing and How Does It Work?
Struggling with a damp basement? Learn about basement waterproofing and how these tips can help keep your basement safe from the elements.
Jill Harness
•
Nov 5, 2025Nov 5, 2025
How to Build a Flood Wall Around Your House
Building a flood wall around your house is a worthwhile investment. For superior protection in a flood zone, it’s best to hire a pro to do the work for you.