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Roof Warden

Roofing contractor

On Top Construction

Listed under Simpsonville, SC

Google average
4.7
Ratings counted
91
One and two star
7 of 91(7.7%)
South Carolina median
1.9%

The first three are Google’s own figures for On Top Construction, read on 24 September 2026; the share is of every rating Google has counted, not of the review texts on this page. The median is ours — the middle figure among the South Carolina roofers we list with enough ratings to compare.

Rating breakdown

4.7
91 ratings
Google’s profile shows 92
How the 91 ratings break down, from five stars to one
5
8492%
4
00%
3
00%
2
11%
1
67%
7.7%of these 91 ratings are one or two stars (7)

Higher than most — the typical roofer in South Carolina sits at 1.9%. A higher share is a reason to read the critical reviews below, not a verdict.

The critical reviews

The one and two-star reviews, first. These are what a star average hides, and they are the reason this page exists.

All 5 of the one and two-star reviews we hold for On Top Construction, most recent first.

  • 1 out of 5Josh Attaway3 months ago

    Dont throw your trash in yards to advertise.

    Reply from the business

    Thanks for your comment and leaving a review. You're helping us reach our goal of 100 reviews! However, your comment is a contradiction. You first mention trash and then you acknowledge it as advertisement. Receiving a flyer in your … More

  • 1 out of 5Tonya V3 years ago

    They never returned my call

    Reply from the business

    I have no recollection of ever speaking with you. I find it suspicious and malicious that you leave a review at 2:46am. However, we're not perfect. It's possible that we didn't return a call. Any normal person would call us back and ask … More

  • 1 out of 5Hannah4 years ago

    This company showed up at my neighbors across the street at 7:15 in the morning. As soon as their vehicles were parked they started blaring Latino music. The music is so loud it woke up my entire household. This normally wouldn't be a big deal, except I am sick and trying to recover, and the other people in the home work nights. This is completely inconsiderate! I may just go insane having to listen to their music all day long!

    Reply from the business

    I apologize if we woke you, especially when you were feeling sickly. I spoke with the crew to ensure this doesn't happen again. We are all praying for you to be healed of whatever ails you.

  • 2 out of 5JD SpencerEdited 5 years ago

    Called for an estimate on roof repair due to a leak that has intermittently happened over the last year. At first I was very happy because Bill said he would come out right away, but after he looked at my roof he didn't know why it was leaking and said he would have to get his roofer to come back and look at it. I could tell that he probably wasn't going to call me back and, sure enough, I've never heard anything from him. *Edit* Bill, Maybe you should check your own phone records and you will see that you only tried to call me on Sept 10 and 14th with a text on the 14th...(17 days after you came to look at my roof) and several days after I posted my 2 star review. After reviewing my call history I saw where both times you called me I was at work where I cannot answer my phone, but maybe when you call someone and they don't answer- leave a message. When you text someone- identify yourself more than "I've tried to call you...you haven't answered". I don't save every number of every person I contact unless I anticipate doing business with them in the future and that is why I never saved your number. The bottom line is you came to look at my roof on Aug. 24 and I waited 2 weeks to hear from you before giving up and posting my review. I understand people get busy and sometimes things fall through the cracks, but at least own it and don't try to act like it's my fault.

    Reply from the business

    Jeff, the repair necessary on your roof is more difficult to properly diagnose because you have no attic space to look at to see where the leak is originating and you've made numerous attempts at repairing it yourself. Therefore I … More

  • 1 out of 5Bob Gay7 years ago

    Caused issues and won't admit wrong doing. Dishonest and arrogant

    Reply from the business

    Really Bob? You started off trying to deceive me into putting a metal roof on three sections of home you are building yourself. When I was there the first time you only had two sections built. That's what I gave you a quote for. FOR LABOR ONLY. You tried to get me to honor my price for ALL 3 sections. In which I offered to do if you weren't willing to pay for the additional work that you knew I didn't quote for. You reluctantly agreed to pay for the additional work. The home you are building yourself. You didn't build square (properly). Because of your shotty work. We had to cut a few pieces of metal roofing to square up what you didn't build properly. You bought defective materials, improper screws etc. I still honor my warranty with you. Which is for Labor only as you purchased your own materials. I have definitely learned a lesson by working with you. I will NEVER do any work for anyone who purchases their own materials.

What reviewers keep mentioning

Topics Google extracted from this business’s reviews, with how many mention each. These are words that appeared in reviews, which is not the same as a service the business sells.

  • gutters14
  • efficient crew4
  • gutter repair3
  • quick work3
  • quick start3
  • hurricane helene2
  • painless process2
  • appearance of roof2
  • clean yard2
  • gutter guards2

Other reviews we hold

14 more of the 24 reviews we hold text for, most recent first. We do not hold every review Google has.

  • 5 out of 5chris siska week ago

    I highly recommend On Top Construction! They came right out when I was having a ventilation problem with my roof and took care of the issue quickly and professionally. They were responsive, knowledgeable, and made sure the problem was properly addressed instead of just putting a temporary fix on it. It’s great to find a company that actually shows up when they say they will and stands behind their work. **Excellent service from start to finish—5 stars all the way!**

  • 5 out of 5Kathy MaynardEdited 3 weeks ago

    Bill...the owner is great. This is the second time we have used On Top Construction and they did another amazing job! On time, cleaned up and at a great cost! Would highly reccomend them!

    Reply from the business

    Thanks Kathy! It was a pleasure working with you too.

  • 5 out of 5ryan baker3 weeks ago

    On Top Construction was amazing from start to finish! They responded quickly to our request for an inspection and quote, got us on the schedule right away and had the work done in no time. They were able to match our existing roof perfectly and the finished repair looks great. They completed the work the same day and cleaned up everything with great care. We would highly recommend them to anyone who needs their roof replaced or repaired!

    Reply from the business

    Thanks Ryan, it's been a pleasure working with you. I'm glad your realtor recommended us to you.

  • 5 out of 5Walter Gilstrapa month ago

    Did a great job kept everything thing clean no mess left bill is quick to come back out over any problem even years after install

    Reply from the business

    Thanks Walter for the review. We were glad to come out and provide customer service and give you peace of mind. We were glad to diagnose the problem of being condensation caused by extreme humidity and not being a roof leak. If you need us in the future. Give us a call. We are happy to give our customers the time and services they deserve.

  • 5 out of 5Angela Maysa month ago

    Wow! Just got my roof replaced today by “On Top Construction”, owned by Bill Nowacki. And it is completed just in time before the rain started. These guys did a fantastic job. My roof looks amazing. They showed up; did the work and cleaned …

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

    Reply from the business

    Thanks for the review Angela! Glad to be able to help you with a new roof for your home in Anderson SC.

  • 5 out of 5Matthew Taylora month ago

    On top construction did a great job replacing my roof and gutter. Great price great work and friendly service answering all my questions or concerns. Highly recommend for your next roof or gutters.

    Reply from the business

    Thank you for choosing us. We strive to always do our best, use quality materials, provide excellent workmanship and do a quality job at a fair price.

  • 5 out of 5Donald Jonesa month ago

    On Top Construction was a to work with. They installed a new roof and gutters back in September 2023. The roof withstood the fury go Hurricane Helene and no damage was noted. The folks that installed the work were very professional and cleaned up any nails that hit the ground. I like the warranties that On Top Construction has. The shingles are a lifetime warranty. Their workmanship is guaranteed for 2 years and then they have a program where each year after the workmanship warranty expires (starting year 3) they will inspect the roof and warranty their workmanship for one more year. The extended warranty is relatively inexpensive considering the cost of replacement even if you have good insurance. Highly recommend On Top Construction. Good folks, good price, and they respond quickly to your requests. Kudos to On Top Construction!

    Reply from the business

    Thanks for your kind words and support. It's a pleasure working with you.

  • 5 out of 5Robby craiga month ago

    On Top Construction did a fabulous job for us, they were very helpful and I didn't have to wait long for the roofing job to be done. Very honest and professional crew, they went above my expectations. I will hire them again for any work I need done.

    Reply from the business

    Thanks for sharing your thoughts and kind words. Thanks for choosing us for your new roof. And we welcome working with On future projects!

  • 5 out of 5Tracie Halloran3 months ago

    We contacted On Top construction to do a roof replacement on our barn and repair the attached overhang, covered area. They were responsive and arrived on time for the estimate. Once the estimate was approved, the work was completed quickly and professionally. Quality work for a great price!

    Reply from the business

    Thanks for the review. It was a pleasure working with your family! Give us a shout, If we can help with future projects.

  • 5 out of 5Zack W6 months ago

    Bill and his crew were incredible to work with. Bill was super helpful in assisting with our insurance claim as it was denied the first time but came back out for a second inspection to help us ensure we got approved. He was very flexible in getting payment to him and very good at communicating through the process. He was able to start very quickly and had the job completed in 1 day. Thanks guys.

    Reply from the business

    Thanks Zack for the kind words. It was a pleasure working with you.

  • 5 out of 5Takeshita8 months ago

    They were very friendly and accommodating. And work quick, great company.

    Reply from the business

    It was a pleasure working with you. Hope your new home brings you many years of comfort and joy!

  • 5 out of 5James Sims8 months ago

    Honest, local, small business owner. He has done work for me multiple times. This time he replaced my entire roof and added metal accents on my house giving it the curb appea I was desiring as a customer. We had a lengthy process dealing …

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

    Reply from the business

    Thanks James. You're a hardworking busy man. Appreciate you taking the time to leave us a review.

  • 5 out of 5Angelia Singletary9 months ago

    On Top Construction made this transition easy. Bill made sure my shingle choice was perfect for my home. He explained the process, materials and he was so easy to reach. His crew was professional and efficient, leaving my yard spotless. The installation of a new roof made a huge difference in the appearance of my home. The experience was seamless and I highly recommend On Top Construction and Bill Nowalki for your 30-year roof!

    Reply from the business

    Thanks Angelia for choosing us and trusting us to do a quaility job for you!

  • 5 out of 5Frankie Williams10 months ago

    I had a leak called Bill his crew came over found the problem and fixed it. No more Leak.

    Reply from the business

    Thanks for the kind words and taking time to leave a review.

The latest post from this business

Posted by On Top Construction to their own Google profile 14 days ago. Their words, not ours.

New roof replacement in Laurens SCJul 10, 2026

What On Top Construction says about itself

Taken from the business’s own website. We have not checked any of it. These are quotes, not credentials — a roofer writing “licensed and insured” on their homepage is not evidence that they are.

  • Licensed

    “…Our fully licensed, bonded, and insured team completes…”

  • Warranty offered

    “…1-Year Repair Labor Warranty A white checkmark centered inside a…”

  • States years in business

    “…reputation on quality work backed by over 15 years of industry experience. As a…”

  • States a founding year

    “…Since 2017, we've helped homeowners with fair…”

  • 24/7 emergency call-out

    “…Our emergency team remains available 24/7 for urgent situations requiring…”

  • Veteran owned

    “…Please try again later. Veteran Owned and Operated Reliable Roofing…”

Their site also states: insured, bonded.

Other roofers in Simpsonville

Ranked by how many ratings Google has counted.

Other roofers we list in Simpsonville
Roofing contractor
JRP Roofing & Remodelinginsurance claim assistance, promptness, gutters4.9132 ratings2.3% one and two star(864) 476-0637
PCS Roofingclean up, roof replacement, leaking4.375 ratings17.3% one and two star(864) 862-8887
Roofing Unlimited & More Inc.roof replacement, metal roof, leaks4.964 ratings1.6% one and two star(864) 378-2360
High Caliber Roofsroof replacement, timely completion, no leaks5.059 ratings0% one and two star(864) 256-1227
Hyman Builders & Roofingquality of work, roof job, competent crew4.956 ratings3.6% one and two star(864) 379-4331
Rhino Roofing And Restorationinsurance guidance, new roof installation, professional crew4.849 ratings6.1% one and two star(864) 526-0295

All roofers in Simpsonville →

Where this page comes from

Every figure above is Google’s, captured on 24 September 2026. The star average and the 91 ratings behind it are counted by Google across all of its reviews. The review text on this page is a sample — we hold 26, of which 24 have any text — and it is not everything Google shows.

Roof Warden does not verify licenses, bonds, insurance or workers’ compensation cover, and nothing on this page should be read as though we had. Confirm those directly with the contractor and with your state or provincial licensing body before you hire anyone.