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TRUSTED BY MERCER, PA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon142
    Verified roofing services reviews

Top-Rated Roofers in Mercer - Updated Nov 2026

Avatar for One Source Roofing
One Source Roofing
4.7(
48
)
Asphalt Shingle Roofing - Repair - For BusinessFlat, Foam or Single Ply Roofing - Repair- For BusinessNatural Slate Roofing - Repair- For Business+4 more

Serving Mercer, PA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"One Source Roof Mr. Sam recently had a review from me Celestine G. This review I wanted change to reflect him having a understanding of what I explained to him. Mr. Sam made the matter all good and satisfied me as a customer ????? thank you One Source Roofing Mr. Sam, continue serving the community. Celestine G"
Just a few photos.
Just a few photos.
Slate Repair. Photo #1
Slate Repair photo #2
Free Commercial Roof Estimate.

+14

Response time1 day
Response rate97%
8 neighbors recently requested a quote
Avatar for Mike Williams Western PA Slate Roofing
Mike Williams Western PA Slate Roofing
4.5(
104
)
Natural Slate Roofing - RepairNatural Slate Roofing - Repair- For Business

Serving Mercer, PA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"PA western slateâ â there is no one better out there!!!!! I was in the service for almost 30 years and these guys are top-notch customer service representatives and some of the best in the field out there doing roofs!!!!! They also do windows and replaced 39 windows at my homeâ ¦. They go above and beyond and they are an amazing team!!!!!"
Fall 2011 photos
Fall 2011 photos
Fall 2011 photos
Fall 2011 photos
Fall 2011 photos

+44

Response time8 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
388
)
Asphalt Shingle Roofing - Install or Replace

Serving Mercer, PA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

Elevate your home with Home Genius Exteriors, setting the standard by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It?s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!

Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing

+76

192 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.7(
656
)
Asphalt Shingle Roofing - RepairInspection - RoofingMetal Roofing - Repair+5 more

Serving Mercer, PA and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

Elevate your home with Home Genius Exteriors, setting the standard by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It?s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!

Windows
Windows
Windows
Windows
Windows

+75

9 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.8(
525
)
Asphalt Shingle Roofing - RepairInspection - RoofingMetal Roofing - Repair+2 more

Serving Mercer, PA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"A professional job was done. The whole process went as agreed in the contract. The whole roof was done in one day. The crew was diligent in there work. I would recommend them to others thinking about a roof replacement. I didn't have a metal roof installed and opted for conventional shingles."
Roofing
Roofing
Roofing
Roofing
Roofing

+83

Recommended by89%of homeowners
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.7(
656
)
Asphalt Shingle Roofing - RepairInspection - RoofingMetal Roofing - Repair+2 more

Serving Mercer, PA and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

Elevate your home with Home Genius Exteriors, setting the standard by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It?s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!

Windows
Windows
Windows
Windows
Windows

+75

Recommended by84%of homeowners
Avatar for Shell Roofing & Exteriors
Shell Roofing & Exteriors
4.1(
16
)
Asphalt Shingle Roofing - Install or ReplaceMetal Roofing - Install or ReplaceAsphalt Shingle Roofing - Install or Replace - For Business+3 more

Serving Mercer, PA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Everything went well, very impressed by how effective and professional the crew was . They were on our roof by 8am and pulling out our driveway at 2:30 . Couldn’t even tell they were here except that we had a brand new roof. Definitely would recommend them"
University Village at Slippery Rock
University Village at Slippery Rock
University Village at Slippery Rock
Additional Photos
Additional Photos

+10

Response time2 days
Response rate100%
7 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.7(
656
)
Metal Roofing - Install or ReplaceAsphalt Shingle Roofing - Install or ReplaceFlat, Foam, or Single Ply Roofing - Install or Replace+2 more

Serving Mercer, PA and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

Elevate your home with Home Genius Exteriors, setting the standard by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It?s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!

Windows
Windows
Windows
Windows
Windows

+76

3 neighbors recently requested a quote
Recommended by84%of homeowners
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Roofing FAQs, answered by experts

You can only overlay a roof once. Any additional layers of shingles will add too much weight and may also violate building codes. Once your roof has had an overlay, you’ll need to have a full roof replacement, including a tear-off of all existing roofing materials, when it’s time for a new roof. 

Underlayment is required by building code, so any roof installed without it is technically against code. The underlayment acts as the second layer of defense against water, so installing a roof without underlayment means a much higher risk of roof leaks. You’ll have the best chance of avoiding roof leaks if you install drip edge flashing covered by underlayment, and then install your roofing material over that.

Roll roofs don’t last as long as traditional roofs, like those made of asphalt shingles. A roll roof typically lasts between five and 15 years, whereas a shingled roof will last between 20 and 50  years. Modified bitumen roofs are similar in look to rolled roofing but have a 12 to 15 year warranty.

If you’re choosing between a roof overlay and a tear-off, opt for a tear-off and full roof replacement instead of a roof overlay if possible. The cost savings from an overlay can easily be eclipsed by repair costs, the effects of structural damage from the additional weight, and needing to replace your roof sooner than expected. A full replacement will last longer and is less likely to need damage repaired over time.

Asphalt shingles have varying thicknesses across the length, so failing to stagger shingles from one row to the next will leave you with bulges and bumps if the thicker sections stack on top of each other. Not only is this unappealing, but it increases the risk of water intrusion. Stagger each new row by 6 inches to avoid this issue.

The Mercer, PA homeowners’ guide to roofing services

From average costs to expert advice, get all the answers you need to get your job done.