On Top Roofing

On Top Roofing
45 River St Ste T, Millbury MA, 01527 USA


About Us

This residential contractor is a GAF Factory-Certified Contractor. GAF trains and tests thousands of the best roofers in the country and makes sure they're appropriately licensed and insured so they can offer the best warranties.

Member Since:
Certifications & Awards

*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the Contractor Terms of Use.

Customer Reviews

4.8 (68)

Google Reviews

Contractor reviews from customers on Google

  • "Tim was very timely and knowledgeable about flat roofs and roofs in general. His quotation was emailed to me and accepted online. The technicians found more that needed to be done while doing the job and did it. On Top Roofing did not charge me for this additional work. I appreciate their attention to detail and highly recommend for their experience and quality of work."

    - D.P, Sep 21, 2023

  • "Finally found a good roofing company. Tried two others and wasn't happy with them. On Top gave a good price and did a good job. I would highly recommend them."

    - D.H, Aug 11, 2023

  • "Had moisture issues in the attic. Tim came out promptly and came up with a ventilation solution. His team was professional and did a great job. The guy on site even reminded me to clean out my dryer vent after he noticed it was clogged up!"

    - J.A, Aug 4, 2023

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