Get matched with top basement waterproofing pros in Nantucket, MA

"They advice, and had all our questions answered on sensible and affordable options. Very knowledgeable, prompt, polite, efficient, and thorough team! We are happy with their waterproofing services in our basement (fast sump pump and a grate trench with a discharge line that goes 15 feet to the outside bubbler) as well as crawl space shield installed under our addition. It works well, and Pioneer checked a month later and a year after for inspection and cleaning. A+ work and workers."

"Recently needed some waterproofing work done in my basement, proceeded to look up 3-4 different companies thet did basement water proofing work decided to go with Key Waterproofing and it was a "GREAT CHOICE"!!! Was notified as to when the job was to be done, 3 great guys showed up,right on time, went right to work installing a Sump-Pump in our basement floor to takecare of our water problems. They did neat, high quality work everything was cleaned up with a "job that was well done". "Very satisfied" would highly recommend Key Waterproofing for all your waterproofing needs!!!!!!!"

"Still waiting for the job to be done but best price for what needs to be done."

Since starting in 2018, we have been giving our clients nothing but the best quality of work.

"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."

\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.

"Crew showed up on time. Friendly and courteous. Work completed very professionally."

"I called early in the morning and I mean early and they came out within a couple of hours. I would recommend them to my family and friends and I don't take that lightly. This company is the real deal they do what they promise for a fair price."

"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"

"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!"