FlatRoof Commercial Roofing

We hold no one or two-star review text for FlatRoof Commercial Roofing. That is not the same as there being none — it means our capture did not reach any. The rating breakdown above is Google’s own count and is the number to go on.

• flat roof replacement24
• commercial roofing11
• knowledgeable estimator3
• parapet wall2
• improved drainage2
• tidy crew2
• quality roof2
• clean look2
• ceiling tiles2
• quick completion2

14 more of the 52 reviews we hold text for, most recent first. We do not hold every review Google has.

• 5 out of 5Australia Howella week ago

  had water coming through the ceiling in our stockroom for months. FlatRoof found the bad section fast and resealed it. no more leaks even after the last big rain. wish id called them sooner instead of patching it myself

• 5 out of 5Lavonte Allena month ago

  Started looking for a roofer last fall after our previous one quietly stopped returning calls. Got three quotes for a flat roof replacement on our small warehouse. FlatRoof wasn't the cheapest but their proposal was the most detailed and …

  Google cut this review short. The full text is on their Google profile.

• 5 out of 5Jesus Christ is King rodrigueza month ago

  Had water staining the drop ceiling in our breakroom for months and couldn't figure out where it was coming in. Got a few estimates around Crystal Lake and this guys turned out to be the only ones who traced it to a seam that's been opening up near the parapet. Fixed it in a day, no more stains

• 5 out of 5Delia Hartman2 months ago

  Writing a longer review because I read a lot of them before picking a contractor and the detailed ones helped me most. Our building needed a full commercial roof replacement and I gathered three quotes from companies that service Algonquin. …

  Google cut this review short. The full text is on their Google profile.

• 5 out of 5Tani Kitani3 months ago

  FlatRoof did a full replacement on our office building, about 5000 sq ft of flat roof. the finished surface is really even, no bumps or ripples, just a clean uniform look all the way across. the seams are all properly bonded down which was …

  Google cut this review short. The full text is on their Google profile.

• 5 out of 5Tt U4 months ago

  had them do a full flat roof replacement on our retail building. the old membrane was shot and they tore it all off and put down a new single ply system. the finished surface is smooth and drains way better than the old one, no more puddles …

  Google cut this review short. The full text is on their Google profile.

• 5 out of 5Shanell Lacy4 months ago

  started looking into getting our flat roof redone after noticing some soft spots. reached out and they got someone over pretty quick to look at it. estimate was straightforward no surprises. once the work started they kept things on schedule and the building tenants barely noticed anything happening up there. done in about a week

• 5 out of 5John Fouche4 months ago

  FlatRoof did commercial roof work for us and it was a smooth experience. no surprises, no weird charges, crew was professional and efficient. they finished the job in the timeframe they quoted which is more than i can say for some contractors weve used before. the roof looks good and seems well built. we plan to have them back for the second building when that one needs attention. not much else to add, just a solid company that does what they say theyre going to do

• 5 out of 5Asten4 months ago

  Full membrane replacement on our building in Crystal Lake. New surface is real clean looking and the drainage is way better than before. Took them like three days total

• 5 out of 5Jamie Edwards4 months ago

  Our flat roof had this slow leak that only showed up during heavy downpours and it was ruining ceiling tiles in the conference room. Flatroof tracked it to a failed seam near the parapet wall, fixed it up.

• 5 out of 5Heather Butler5 months ago

  so our warehouse roof had been slowly deteriorating for years and we kept putting off the replacement bc the quotes we were getting were all over the place and we didnt know who to trust. had three different roofing companies in the Crystal …

  Google cut this review short. The full text is on their Google profile.

• 5 out of 5Neressa Nicole5 months ago

  Took me a while to actually commit to getting the roof done, kept going back and forth on timing. Once I finally pulled the trigger it moved fast, maybe a week from signing to finished work.

• 5 out of 5Amanda Rosinski6 months ago

  We had our commercial building reroofed and the experience was very positive from consultation through completion. The existing roof was a twenty year old EPDM system that had reached the end of its useful life with shrinking at the seams …

  Google cut this review short. The full text is on their Google profile.

• 5 out of 5andre smith7 months ago

  The crew was punctual, kept the job site very clean, and used quality materials. I am very happy with the final result.

Crystal Lake Roofing Advice: DIY vs Professional Repairs Homeowners in Crystal Lake often face the dilemma of whether to repair their flat roof themselves or hire professionals. While DIY repairs can seem convenient, they come with certain limitations. Flat roofing systems require specialized knowledge to repair effectively. Without proper expertise, it’s easy to overlook critical issues. That’s why many rely on flat roof repair near Crystal Lake for accurate assessments. Another drawback of DIY repairs is durability. Temporary fixes may not withstand harsh weather conditions. Professionals offering flat roof repair near Crystal Lake use materials designed for long-term performance. In the end, professional repairs provide greater reliability and peace of mind. Choosing flat roof repair near Crystal Lake ensures your roof remains strong and secure over time.Apr 22, 2026Call now