Looking for Quality Roofing Materials in Winslow & Waterville, ME ?

Learn about the brands we carry at our local roofing supply store

When you visit McCormack Building Supply in Winslow, ME, you'll find a large selection of top-notch roofing products. Our roofing supply store works with leading manufacturers to supply quality roofing materials to builders and contractors throughout the Winslow area.

We offer a wide range of roofing products, including asphalt shingles, metal roofing, slate composite shingles and more. Our knowledgeable team can make sure you have the correct underlayment, drip edge, water shield and ventilation system so your roof will last and look great for years to come. You can count on the helpful staff at our roofing supply store to help you find the products you're looking for.

Keep reading to find out what materials and brands we carry. If you have any questions about our roofing products, call us at 207-873-6467.


The right roofing can boost the curb appeal of any style of home, from rustic to urban, colonial to contemporary. You'll find the perfect roofing shingles for yours in one of IKO's three collections: Architectural, Premium Designer or Traditional. For beautiful protection that's engineered to last, IKO sets the standard. You can set the style.

CertainTeed Roofing offers a wide array of residential roofing shingle options with profiles that are as beautiful as they are durable. Our designer, luxury and traditional shingle offerings display the textures, colors and style that today's homeowners demand.


Everlast metal roofing and siding is far superior to anything else on the market. Our secret to success is our one-of-a-kind Heat Forming process. Heat Forming prevents microscopic paint cracks, and enables the use of harder, more scratch resistant paints. This makes Everlast Roofing the perfect choice for commercial, residential, agricultural, architectural, and industrial buildings.

Founded in 1963, Metal Sales operates manufacturing facilities in 21 locations throughout the United States and Alaska. Today, our metal building products and systems are used in all building sectors including: commercial, institutional, light commercial, industrial, agricultural, and residential markets. Metal Sales is firmly committed to helping build and re-build America's infrastructure with truly innovative, higher quality, longer lasting and more environmentally sensible products.


RoofTopGuard II™ installs 30% faster than the equivalent competitions' underlayment.

  • Lightweight rolls - weigh only 43 lbs per 10 square roll - measure 60" x 200'
  • Guaranteed for 30 years
  • Guaranteed 100% protection from insects, mold and mildew for all roofing materials
  • Will not tear and rip in high winds
  • Withstands outdoor exposure for up to six months without degradation
  • Fiber-Grip® slip resistant surface offers superior grip and traction than standard roofing felts
  • Meets or exceeds criteria set by Miami-Dade County, ICBO, ICC-ES and Florida Building Code

Say goodbye to traditional asphalt saturated felt paper - Break free from felt™ with RhinoRoof® U15 synthetic roofing underlayment!

RhinoRoof U15 is a highly engineered, mechanically attached, coated woven synthetic roofing underlayment for sloped roofs. RhinoRoof's durable and high strength design along with its fiber grip walking surface provides a considerable improvement over asphalt saturated felt. Its fiber grip textured walking surface can also be chalked just like felt.