Allied Waterproofing & Drainage

Preetha A.

Allied waterproofing ( Paul) stopped by to give us a quote and assessment for water in our basement. We had lots of water coming in , continuously over the last few months even with dry weather and no rain. We got quotes from other vendors, used a leak consultant to ensure it was not our pipes. Paul looked at the issue, listened to us and asked us to check our air conditioning unit. Though there was water seeping into the entire room- he shared that he has seen this happen before and we should check that anyways to make sure, though he would give us a quote anyways. What a lifesaver, it did turn out to be a leaking tube at the back of the air conditioning unit/ furnace where the water was traveling along the seam of the wall/ floor and coming into the room at a different point. He saved us a lot of money as the fix was $300 versus a major waterproofing effort for that part of the room. Love the integrity of this business. They get booked up very fast- we waited a month for an appointment- worth it.

Tom M.

Our basement flooded due to a formerly, incorrectly installed window well drain. Called Allied, who quickly inspected the problem, offered a number of options and gave me an estimate for my choice of options. Work crew showed up as scheduled, were very polite, explained what they were doing, and asked questions as necessary. They were quick and efficient plus re-landscaped and cleaned up yard to better condition than when they started. They demonstrated and tested the system to show me it was working and asked if I had any questions.

Invoice matched the estimate...but the work timeliness and quality FAR EXCEEDED MY EXPECTATIONS.

Great company, would highly recommend them!

C. B.

I live in an old 1919 Craftsman that has been plagued with water issues since I bought it in 2003. I had a sump pump installed 3 years ago, but alas, the immense amount of rain we had at the end of Dec. '19 was too much, and the hydrostatic pressure was such that the water just pressed through the foundation.

Allied was the first company to answer my email (within a day), and Paul was able to work around my inconsistent schedule and got a site visit scheduled within a week, which was quite impressive considering the amount of flooding in the region.

Paul was prompt, courteous, and matter-of-fact with his assessment and estimate, and immediately recommended doing less than what I had originally envisioned in order to save me some money. I opted to go with the full interior French Drain as well as a gutter redo anyways, and my estimate was well below what I had thought it was going to be.

Truth be told, they had to push their start date back due to aforementioned regional flooding and my work schedule, but that was not their fault at all. Once a new start date was settled on, his workers arrived early, had great communication, and were, in a word, AMAZING.

They finished ahead of schedule. Clean-up and worksite cleanliness was impeccable. They went above and beyond and even corrected some mistakes with my sump pump that the previous installer had made, replaced the turf they cut and dug up to tie my gutter lines together, and left the entire area spotless.

I only wish that I had known they were going to finish early so I could have been home to give the crew a tip in person, they were simply amazing. If I ever have any water issues again (unlikely), I would not hesitate to use Allied again. They are fantastic.

Ryan F.

This company absolutely amazes me. I have water coming under my foundation. Amongst many other issues. Paul(the owner) came out probably 10 times over the course of a few months presenting my with options at zero pressure. Turned out I needed all my curregated downspout pipes replaced. I can't thank Paul enough for his patience. This is unheard of in Seattle. I had every drainage company out in the area. By far Pauls customer service and transparency are superior. And prices are fair. I will only trust my drainage to allied from here on out. The team that came worked hard and fast and cleaned up everything. There were areas I wanted dug by hand which they did no complaints. Amazing company.

Daniel Z.

We asked for a crawl space inspection to address our concern about sagging insulation. They were very prompt scheduling, coming in on time, and being very honest to tell us that we don't need any repair beyond just stapling some cardboard back to the vent window top. Having dealt with a lot of contractors lately, this is a breath of fresh air!

John W.

I contacted Allied Waterproofing and Drainage on a Monday afternoon for a quote to fix my french drain and they were able to send someone out the very next morning to take a look at the drainage problem in my backyard. I explained to Paul, the person they sent out to take a look at the problem, the work I had already done and he quickly suggested a fix. The fix involved a lot of shoveling, but less work than I had anticipated. Paul still sent me the quote I requested, but after hearing his advice, I decided to address the problem myself. I really appreciate how prompt, honest and straight-forward the company was when I asked for help. I would definitely recommend contacting them if you have drainage problems!

Susan K.

I am very pleased with all aspects of the job. From estimate to scheduling to work, the project ran very smoothly. I had a crawl space drainage system installed with a sump pump. Hard working crew for sure.

Ashley F.

After meeting with about 6 other plumbing businesses, I went with Allied for a channel drain installation outside our garage door. Paul came out a few times, answered all of my questions, was prompt with emails and phone calls, and offered a very competitive bid. The work was top notch, with one minor issue of slope - which turns out was not in scope of our project (hence the 4 stars instead of 5) - that they will be fixing soon. Very pleased with the work, friendliness, and professionalism. If you need any sewer work done, this is the place to go with!

Robert B.

Hands down, the best experience I've ever had with a contractor - can't recommend them enough.

Paul and team at Allied Waterproofing put in a new sewer liner for our house. Things that made my experience great:

1) Professionalism: Paul, our Estimator, was incredibly responsive. He quickly provided a quote for the work that provided a very detailed explanation of the work that was needed. Other contractors just gave me a number (no details). Paul also replied to my questions via e-mail quickly and thoroughly.
2) Cost: Paul's bid came in at 30% less / thousands of dollars lower than bids I received from other larger plumbing shops. I was worried that the lower price point might mean low quality work but other online reviews reported fantastic work so we chose to move forward. I'm extremely happy we did as...
3) Quality of work: Most important of all, they got the job done right and their attention to detail was excellent. They got the new sewer liner in quickly and with minimal disruptions at our house. When the team found an unexpected break in our sewer line, they dug right in and replaced the broken piece of pipe instead of leaving the problem to fix later. Despite having to dig several large holes in our yard, they restored everything perfectly - I literally think our yard looks better now than when they started.

In all, if you need sewer / drainage work, go with these guys. Very professional, great price, great work.

Lisa G.

Allied came out again to finish waterproofing our basement. We did have a couple leaks where they didn't work originally. The second time they were great as the first time, the guys still took away some extra concrete debris of ours. I recommend these folks! If you want honest, hardworking people to fix your drainage issues, these are the people to go to. I appreciated the cautious approach, buf we have been totally dry!