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Avatar for Pioneer Basement
Pioneer Basement
4.5(
264
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Nantucket, MA and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"It went well. They are being professional in their follow-up as they are trying to have us install an expensive basement drainage/pumping system. We haven't decided yet, as it will be part of our basement gut/rehab project."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+5

Response time2 days
7 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Key Waterproofing Construction
Key Waterproofing Construction
4.6(
229
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Nantucket, MA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2014

Free estimates

Warranties offered

"Stephen and Wendel's crew at Key Waterproofing Construction did an excellent job in waterproofing my basement with cement. They were extremely professional, and superfast. Completed the job in five hours, had a crew of six, to completed a foundation of 200 sq ft. The price was right and job was impeccable, crew left the site nice and clean."
Response time12 hrs
49 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Kings Masonry & Construction, Corp.
Kings Masonry & Construction, Corp.
5.0(
5
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Nantucket, MA and surrounding areas

Approved

In business since 2021

Free estimates

Offers commercial services

"Living on Cape Cod & the islands limits us with options. I tried to get quotes from local vendors but was told my chimney is to large for their capabilities. Kings Masknary can by for an estimate and was able to diagnose the issues and put a plan in to fix it immediately. I was impressed that they worked thru a weekend in the cold to fix my problem. They did exactly what they said they would do and guaranteed their work for 20 years. What more could you ask for. Was great working with them and would call them again but now . What a great feeling to know that if there is an issue, they will stand by their work."
Response time6 hrs
Response rate95%
6 neighbors recently requested a quote
Avatar for Island Construction Corporation
Island Construction Corporation
5.0(
3
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Nantucket, MA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

\nOur company is guided by specific values that we hold in high regard, such as reliability, excellent communication, integrity, and quality work. As experts in our trade, we are committed to keeping our clients informed and educated throughout their specific tasks or projects, ensuring they receive exceptional service.

Deck renovation
Deck renovation
Deck renovation
Deck renovation
Deck renovation

+9

Response time2 days
20 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for DryZone Basement Systems
DryZone Basement Systems
4.7(
112
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Nantucket, MA and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"DryZone Basements kept me up to date on my Appointment, called the morning of, arrived on time, checked in with me at the beginning to review scope of work, set up a dust barrier, two (2) workers and the job lead, worked hard throughout the time here. The lead would check in with me in intervals, they were open to answering any questions. Upon finishing, the lead took me around the whole job, explained the work, and allowed me to ask any questions, and provided me responses, and cleaned up the work area very well. Hopefully, we will never have to use, but definitely worth the piece of mind. Thank you."
Additional Photos
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TripleSafe Sump Pump
WaterGuard and CleanSpace Wall

+3

Response time1 day
Response rate100%
Recommended by90%of homeowners
Avatar for Custom Coatings
Custom Coatings
5.0(
42
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Nantucket, MA and surrounding areas

In business since 2004

Free estimates

Warranties offered

"Jake and team were professional, arrived on time, explained the job completely and then executed flawlessly. We had epoxy and flakes put down on our concrete slab garage floor. Floor looks great, far better than if i had allowed a painter to apply an epoxy kit from one of the paint companies like Sherwin Williams. Jake and team first fixed all the cracks on floor, then used machine to treat floor before first of three epoxy layers plus the flakes. We could not be happier. More expensive than the paint epoxy kits but will last longer. i felt very confident using a local company who also does commercial applications in addition to residential. Very happy with my choice and final product"
Industrial Garage floor
Industrial Garage floor
Industrial Garage floor
Industrial Garage floor
Before Picture

+53

Response time2 days
Response rate98%
Recommended by85%of homeowners
Avatar for The BullBag
The BullBag
5.0(
15
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Nantucket, MA and surrounding areas

In business since 2001

Credit card accepted

"I have now had 4 pickups from this company. Each time it has been with different items: I have had my kitchen remodeled,  a deck torn down and rebuilt, a new roof put on, old fencing disc arded, and a yard cleanup. The only difference in pricing was for the roofing and even though ti was more money it was STILL CHEAPER than a dumpster!!! I don't know how these guys do it, but they pickup on time, without issue andfor the cost quoted. I have turned each of my contractors onto them - now they are using them. SO MUCH cheaper and better service than any dumpster company I have used!"
The BullBag truck in MA
The BullBag truck in NY
Toys for Tots
Recommended by100%of homeowners
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Basement Waterproofing questions, answered by experts

Thankfully, you do have a few sump pump backup options in case it fails. One option is a battery-powered backup sump pump. Another option is using a portable backup generator as a power supply for your sump pump. Unlike a battery-powered backup which has limited power, a generator can run around the clock for as long as you need it. 

Or you can opt for a water-powered backup pump, which uses your home’s water supply as a source of power. However, this may not be the best option if you find your house frequently has low water pressure.

The least expensive basement waterproofing methods include grading soil away from your home, installing downspout extenders on your gutter system, and applying a waterproof paint on the interior of the foundation walls. Installing a French drain is a relatively inexpensive method if you do the work yourself, although it’s labor-intensive and can be challenging to install properly.

Yes, many repair services include reapplying waterproofing and UV-resistant coatings.

Underfloor insulation alone will not cause moisture and mold, but improper installation can. Although the purpose is to seal any drafts, your subfloor still needs ventilation. If you seal the area too tightly and prevent all airflow, this can cause moisture to get trapped. This moisture eventually leads to mold and—if your floors are wood—rotting.

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.

The Nantucket, MA homeowners’ guide to basement waterproofing services

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