AJ Waterproofing

Basement Waterproofing, Wells and Pumps, Drain Pipe Installation,

About us

We are a family run waterproofing specialist company, owned and operated, since 1976 by A.J. DiElsi. We have one crew, one truck and start and finish one job at a time. We are completely insured with general liability and workman's compensation. There is no charge for estimates and we take no deposits on any job. You pay us upon completion of the job. We do not have salesmen. A.J. is the gentleman that comes out to deliver each estimate and he is on each job. We excel in impeccable workmanship, and the jobs are always left cleaner than when we arrived. We give a lifetime guarantee on our French Drains and it is transferable to each new homeowner. Please feel free to call with any questions 610-527-9444 or 610-409-0888, Additional phones: 610-960-1589. Or feel free to email us at : ajwaterproofing@verizon.net, you can also check us out on YouTube and our website, ajwaterproofing.com.

Business highlights

48 years of trusted experience
Emergency Services Offered

Services we offer

Basement Waterproofing, Sump Pumps & Battery Back Up Pumps, Walls Refinished, Grading, Yard & French Drains, Mold & Mildew Treatments, Window Wells

Amenities

Free Estimates
Yes
Warranties
Yes
Emergency Services
Yes


Accepted payment methods

Check

Photos of past projects

Reviews

4.9199 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
93%
4
3%
3
1%
2
2%
1
2%


Rating CategoryRating out of 5
quality
5.0
value
4.9
professionalism
4.9
responsiveness
5.0
punctuality
5.0

Filter reviews by category

Showing 151-175 of 199 reviews

Jerome D.
02/2021
5.0
basement waterproofing
  + -1 more
Great job, very professional
Description of Work: Waterproofing on walls and new window wells

Rating CategoryRating out of 5
quality
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Response from AJ Waterproofing
Good morning and thank you, I'm glad that you were happy with the work. If you have any questions or need anything, please let me know. Thank you and have a great day! A.J.

Erhan D.
07/2020
5.0
basement waterproofing
  + -1 more
storage floor sealing
Description of Work: Sealed well
Rating CategoryRating out of 5
Yes, I recommend this pro

DAVID T.
01/2017
5.0
basement waterproofing
  + -1 more
.
Description of Work: .

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Elizabeth M.
06/2016
4.0
basement waterproofing
  + -1 more
unknown
Description of Work: Didn't use them because their estimate was high. In the end we did some caulking and it fixed the problem.

Rating CategoryRating out of 5
professionalism
4.0
responsiveness
4.0
punctuality
4.0

Yes, I recommend this pro

Response from AJ Waterproofing
I am glad that you were able to fix your problem. Have a good day, A.J.

adam A.
05/2016
5.0
basement waterproofing
  + -1 more
unknown
Description of Work: He was prompt and efficient. Excellent service. |

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,500

Response from AJ Waterproofing
Thank you for the work. If you have any questions in the future, please give us a call. Thank you, A.J.

Vicki K.
09/2011
5.0
basement waterproofing
  + -1 more
We contacted this company (AJ Waterproofing) because of their high ratings on Angie's List. Unfortunately they do not service our area in NJ. But they were willing to speak with us to assist in our options for a solution. They called us and provided information concerning our situation. The professionally and friendliness is outstanding. I can only imagne the quality of their work. I would absolutely recommend this company for the areas they service.
Description of Work: Customer service is outstanding! No work performed as they don't service our area.

Rating CategoryRating out of 5
quality
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Kim B.
09/2011
5.0
basement waterproofing
  + -1 more
I have 2 ft of water in my basement. I'm a little stressed because I never dealt with this before. Caroline was soo helpful. She unfortunately is too booked up to help (everyone is dealing with flooding basements right now). I need to have my basement pumped first. She took a good bit of time giving suggestions on how to find someone else and what to do once my basement dries out. I will call them for sure when I'm ready for waterproofing. Good customer service.
Description of Work: I called to have someone pump out my flooded basement. They were too backed up because a lot of people are dealing with the same issue. Caroline was very helpful otherwise. Will think of using them in the future.

Rating CategoryRating out of 5
professionalism
5.0
responsiveness
5.0

Yes, I recommend this pro

David A.
09/2011
5.0
basement waterproofing
  + -1 more
They did a very good job at the work in the past. I was pleased to see they were still open and in business and we plan on giving them a call soon for work we are about to have done. I recall no complaints from using there service in the past and would recommend and use them in the future.
Description of Work: Baement waterproofing and refinished walls

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Mario G.
09/2011
5.0
basement waterproofing
  + -1 more
We are thinnking about selling our home and were worried that the dampness would be a handicap. Mold grew on the walls and required occasional cleaning to keep it at bay. Mr. Di Elsi came in, told us what needed to be done and then proceeded to do it with the help of his staff. I have waited for a few months before making this report because I wanted to be sure that the problem was fixed. Now we know. August 2011 was the wettest in history and was followed by Hurricane Irene. We did not get one drop of water or moisture. One concern is that there are several small cracks in the newly installed concrete. I called Mr. Di Elsi and he explained that these occurred in about 70% of cases and it was not a thing to worry about. So far, it doesn't appear to be a problem but if it is, I am sure that he will be here to stand by his work.
Description of Work: Our basement never flooded but had slight leakage or dampness on two sides. Mr. DiElsi's crew under his supervision tore out the cement edges, installed a drain and a sump pump and covered everything with new concrete.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,000

WILLIAM N.
08/2011
5.0
basement waterproofing, wells
  + 0 more
Why we called A. J.: Over several years, we talked to people from other national/regional chains and left messages with a couple of other local waterproofing companies. We felt the chains were more concerned with getting their commissions while pressuring us to commit, and the local guys just blew us off without calling us back. Finally, we found A. J. here on Angie's List and were inspired by the excellent grades and reviews. Our experience: A. J. has been in this business for over 30 years for a reason. You deal with the owner A. J. himself, not a salesman. He's a direct-speaking, no-BS expert. His price was extremely fair (lower than we expected), he told us exactly what we needed without padding for his profit, and was clear about what we would get for our money. All in all, he was concerned with solving our problem, not hawking a "system." He and his team delivered incredibly fast-- only two days. We've never seen a contractor team work so fast, focused, and efficiently. Both days, the team showed up at the minute A. J. said they would. At day 1 arrival, they immediately got to work, immediately and thoroughly covering all floors and nearby surfaces and furniture where they would be coming in and out. They swiftly demolished and hauled away everything we asked them to, worked like a well-oiled machine for a solid 8 hours each day, and left our basement freshly painted, bright, and clean. A. J. himself was on site. We've had several severe storms since A. J.'s team did their work, and our basement is bone-dry and clean-smelling. We needed some follow-up for a couple of minor things and A. J. addressed them within a week after the job. Our opinion: We wish we knew about A. J. Waterproofing sooner, but better late than never! They're the real deal--they're excellent at what they do and in how they do it. Already, we've recommended them without reservation to several people.
Description of Work: What they did: A. J. Waterproofing came to remove black mold and to install a French drain/sump pump system in our older home's basement. Prior to the waterproofing, they demolished and hauled away old, decrepit miscellaneous installations in the basement, starting with a clear, empty space. Our problem: We had moderate water problems (enough where we would brace ourselves after every major storm or snow thaw), an accumulation of mold, and, despite the use of a portable dehumidifier, a constant musty smell in the basement. We also had a pipe burst outside our house during the past harsh winter--this exacerbated our problem. At the time we called A. J., we weren't encountering an emergency flooding situation.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$7,000

Bob B.
06/2011
5.0
basement waterproofing, home builders
  + 0 more
I found this company on Angie's List after several referrals fell through. The reviews are accurate. These guys were awesome. Between Monday and Tuesday I contacted the office and the job was completed. To say they are professional is an understatement. I have been unimpressed with some of my recent contractors. These guys restored my faith. They do exactly what is in their contract and they do it the right way. Thanks for the hard work.
Description of Work: French Drain and sump pit.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,000

Jody R.
05/2011
5.0
basement waterproofing
  + -1 more
Excellent all three times I used AJ.
Description of Work: I used AJ for three differnt issues/areas from 2000 to 2003. I had a serious water problem in the "finished" basement of the house I purchased in 2000. Hired AJ and problem was completely resolved. Brought him back again for a second basement the following year and he resolved that problem too. Brought him back for an outbuilding the year after that and he resolved that problem too. His price was very fair. The origianl job turned out to be so much more of a problem than he anticipated, I tried to pay him extra, which he refused.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$8,000

michael K.
04/2011
5.0
basement waterproofing
  + -1 more
They did a great job. The job was done quickly and looked great. They did everything we asked and more. We received quotes from 4 companies, we choose AJ and I would make the exact same decision in a heartbeat!
Description of Work: Cleaned, waterproofed basement with french drain and new pump.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
4.0

Yes, I recommend this pro
$2,400

Robert B.
02/2011
5.0
basement waterproofing
  + -1 more
AJ has done our basement waterproofing and we have recommended him to others. This time he diagnosed the problem as I described it to him over the phone. He arranged to come even though we weren't home, replaced the pump, cleaned up completely, and finished in less than 2 hours.
Description of Work: Replaced sump pump which he had installed 10 years earlier.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$300

Margaret S.
12/2010
5.0
basement waterproofing
  + -1 more
The job went very smoothly. They worked long days; they were very clean about the area when they left. The painter came a total of three times to put extra coats on the walls as promised. The entire job took about two and a half days. The men were professional, neat and clean.
Description of Work: A. J.waterproofing installed two French Drains - one in a crawl space area and one in our lower level basement. They also installed two additional pumps - one each in two sump pump pits. They also demolished the walls made of dry wall and put in new dry wall, finsihed and painted the three newly renovated walls. The damage to our basedment was from three feet of water that we got on 10/1/2010.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$8,500

Carole S.
12/2010
5.0
basement waterproofing
  + -1 more
I had three estimates and choose AJ Water Proofing because he gave me an affordable price and included a larger area of the french drain than the other estimates. He had also noticed an area in the basement, which the two other contractors had missed. His suggestions for correcting the water problem and restoring the walls were excellent and were included in his price! We had a terrible downpour the second day of the job, the sump pump had not been hooked up yet and there wasn't a drop of water in the basement! The men had done an excellent job, the french drain was working! I was impressed with the amount of work that was completed in two and a half days. AJ is professional, honest, and dependable. He and his crew are respectful, polite and they treated my home with care. I highly recommend AJ Water Proofing!
Description of Work: Moved and covered basement contents. Water proofed, interior of basement with a french drain, added my third sump pump, concrete blocked windows and sealed over the entire wall, treated basement with a mold fogger, removed stone and dirt from the ditch for the french drain, cut away damaged and rotted wood panelling, washed and cleaned bsement floors.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
4.0

Yes, I recommend this pro
$7,900

D M.
11/2010
5.0
basement waterproofing, home builders
  + 0 more
Went very well. Couldn't ask for more,
Description of Work: Waterproofed basement.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$6,300

JOAN P.
08/2010
2.0
basement waterproofing
  + -1 more
I went through Angie's List and found three companies that were highly-rated, this being one of the companies. They have a great rating and they probably perform quality work, however, I had an unpleasant interaction with them today so I probably won't use them. I called this company and we set up an appointment for Friday (today) for 2pm. At 2 pm, I received a call from them to let me know that they weren't able to arrive at that specific time, another job was ran longer, etc etc. I told him that would be okay, I didn't have a problem with him arriving later. He then asked me for a description of the work that I needed done, so I gave him an idea. He told me then that he wasn't sure if driving out to my house was going to be "worth his while". He started giving me suggestions, trying to diagnose the situation based solely on my description. He started giving me advice about what to do even though he's never seen the basement, which was irritating and in my opinion, was unprofessional. This upset me, so I told him not to come out then and then hung up. He called me right back and asked me to give him 30 more seconds to talk to me about the situation. Within that thirty seconds, he told me that he would be ten minutes from my location. I don't understand why he'd make such a big deal about making this "worth his while" if he already planned to be within ten minutes of my location for another appointment scheduled for 3pm. I did not like the attitude of this man. Whether this company does good work or bad work, I don't know, but I did not like this entire interaction and I do not plan on using this company. I am very disappointed since they are highly rated and have great reviews, but the conversation today upset me and it still upsets me, even a few hours later.
Description of Work: An estimate for basement waterproofing and replacement of old windows.

Rating CategoryRating out of 5
professionalism
2.0
responsiveness
3.0
punctuality
3.0


Leon F.
08/2010
5.0
basement waterproofing, home builders
  + 0 more
CLEAN. EFFICIENT. ON TIME. PROFESSIONAL JOB. BEST PRICE. GOOD CREW. WOULD ABSOLUTELY RECCOMEND
Description of Work: WATERPROOFED BASEMENT. SCRAPED AND PAINTED WALLS. CLEANED CRAWL SPACE. PUT IN SUMP PUMPS

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,700

Rob T.
07/2010
5.0
basement waterproofing
  + -1 more
Overall good experience so far. Since the work was only performed a few weeks ago, we haven't had too many storms to test the french drain, but in the couple of times that it has rained the basement seems very dry. I feel confident that if by chance we did have a problem, AJ would be out the next day to fix it under the warranty for the job.
Description of Work: AJ and his team installed a french drain throughout our basement (about 120 linear feet). He gave an estimate that matched the actual price which was great because there were no surprises. The work was estimated to take two days and was actually finished in a day in a half, allowing us to move ahead quickly with our basement remodeling project. We had one very minor problem with a battery backup and AJ allowed us to change our mind and gave us back the money for it.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$6,500

DuWayne A.
06/2010
5.0
basement waterproofing, home builders
  + 0 more
This job was performed in an excellent fashion from start to finish. A prompt estimate was provided with two life time warranty options for repair. One for doing the repair on the exterior of the wall and one for performing the repair on the interior of the wall. Once I selected an option the contractor arrived on the job as planed. He completed the job in a timely, neat, and professional fashion. When he left there were no signs of the work being performed. There was no mess left behind. The job site was returned to "better than" original condition. To date after several rains there are no signs of water in the garage.
Description of Work: Waterproofing repair on a garage exterior wall that was allowing water into the garage.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,800

JAMES B.
06/2010
5.0
plumbing
  + -1 more
I have not used them, but I thought the experience was very good.
Description of Work: I got a quote from them for repairing a french drain and installing two sump pumps.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$6,000

Lawrence S.
02/2010
5.0
basement waterproofing
  + -1 more
The man runs a tight ship, and stayed on the job, carefully supervising a hard-working crew. It's a dirty job, but they covered everything we had stored in the basement. Move shelving and cartons out of the way. Removed laundry sinks to make room to jack-hammer a channel in the concrete floor -- and later replaced the sinks, which continue to work perfectly. The job was done well, in a workmanlike manner. A couple of weeks later I was unsure about the sump pump operation and he came promptly to give me instructions.
Description of Work: This was a typical situation. We had moderate water infiltration from areas near window wells and also coming through the walls into our basement. The foundation is stone.The home was built in 1929. We've occupied it since the '60s. Some years there was little water, some years enough to cause basement dampness. We tried coating the walls with products from Home Depot, but the problem was not solved. A.J. DiElsi, the owner came out to estimate and quoted a better price that competitors who wanted $600-1500 more and during a walk-around explained exactly what he would do, the exact location of a sump, where the water would exit the house, etc. He explained how his crew would work, how much time it would take, etc. By the time he left, I had a good idea of the work to be done, and exactly how his people would work. They created a 160 ft. perimeter channel, filled it with stone, made sure it drained toward one corner of the basement, where they installed a submersible sump pump and container and a drain pipe to the outside (my driveway).

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$5,500

CAROLYN C.
03/2009
5.0
basement waterproofing
  + -1 more
AJ personally answered his phone (on the first try to contact him), came to see the job and provided references immediately when asked (both of which had used AJ for several jobs and highly recommended him not only for his work, but for the honest, responsible person he is). AJ attended and participated in the work (no subcontracting). He and his workers were incredibly neat and there was no mess at the end of the day. Extra work had to be done (more drywall had to be removed than anticipated) - which he called me about and did the same day as the installation. AJ was very attentive to all the details and made sure I was satisfied with the work. All of this was done, from initial contact to completion of the job, within a week. It was the absolute best experience I have ever had with a contractor.
Description of Work: I had a water problem in the basement which I could not fix with the usual outside adjustments. AJ put in a French drain along one wall and a sump pump.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$3,100

JULIE S.
11/2008
5.0
plumbing, basement waterproofing
  + 0 more
They did a great job. He gave me a decent price. I had a small problem the day after the job and they came right away and fixed it. They started working when they said they would and they worked everyday. The owner, AJ came every day to check on the job. They were very neat, clean and polite. You can't ask for much better than that! I would absolutely use them again if I had a basement. They gave me a list of references as soon as I asked for them and I called about 6. Every single one recommended him!
Description of Work: They tore out paneling and old things out of my basement. They took truckloads of junk away. My basement was a mess. They put a French drain in and a sump pump. They scraped down the walls and put a solution up to kill mold and mildew. They put mesh over the cleaned up wall and then replastered the wall. They used a waterproofing compound on top of that and then painted the walls.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$9,000

Contact information

3774 Kratz Rd, Collegeville, PA 19426

http://ajwaterproofing.com

Service hours

Sunday:
Open All Day
Monday:
Open All Day
Tuesday:
Open All Day
Wednesday:
Open All Day
Thursday:
Open All Day
Friday:
Open All Day
Saturday:
Open All Day

Licensing

Bonded

Insured

Licensed*

Trade License Number
PA054659
Trade License Locale
PA
Trade License Authority
Pennsylvania Office of Attorney General - Bureau of Consumer Protection
Trade License Expiration
02/05/2026
State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our State Contractor License Requirements page.

*Contact business to see additional licenses.


Service Categories

Basement Waterproofing,
Wells and Pumps,
Drain Pipe Installation,
Plumbing,
Homebuilders,
Foundation Repair,
Electrical,
Mold Testing & Remediation

FAQ

AJ Waterproofing is currently rated 5 overall out of 5.

Sunday: Open All Day

Monday: Open All Day

Tuesday: Open All Day

Wednesday: Open All Day

Thursday: Open All Day

Friday: Open All Day

Saturday: Open All Day

AJ Waterproofing accepts the following forms of payment: Check
Yes, AJ Waterproofing offers free project estimates.
No, AJ Waterproofing does not offer eco-friendly accreditations.
No, AJ Waterproofing does not offer a senior discount.
Yes, AJ Waterproofing offers emergency services.
Yes, AJ Waterproofing offers warranties.
AJ Waterproofing offers the following services: Basement Waterproofing, Sump Pumps & Battery Back Up Pumps, Walls Refinished, Grading, Yard & French Drains, Mold & Mildew Treatments, Window Wells

Contact information

3774 Kratz Rd, Collegeville, PA 19426

http://ajwaterproofing.com

Service hours

Sunday:
Open All Day
Monday:
Open All Day
Tuesday:
Open All Day
Wednesday:
Open All Day
Thursday:
Open All Day
Friday:
Open All Day
Saturday:
Open All Day