About Us

R & G May Limited T/A Sermac

Sermac supply, install and maintain Electric and Hand Chain Operated Roller Shutter Doors, up and over garage doors, plus Overhead Sectional and Sliding Shutter Doors throughout the North East.


Sermac was established in 1969 and we pride ourselves on supplying a full range of garage doors backed by manufacturer’s guarantees providing peace of mind.

Every door is made-to-measure so that it fits your garage perfectly. Manufactured from strong corrosion-resistant aluminum with an insulating core and is available in a range of stylish colours.

These durable factory coated finishes eliminate the need for painting and ensure that your garage door continues to look good for years and represents a sound investment for your home.

Once installed our roller shutter doors they are very low maintenance and come complete with a 2 year guarantee on all manufactured parts for total peace of mind.

Sermac has been known and respected for its standard of excellence since 1969. Since we first opened our doors as a local building supply house, we have strived to deliver superior products and service.

Our strength was gained locally as a garage door installation company, simultaneously our expertise and knowledge in garage doors has expanded.

Our commitment to quality has allowed us to grow into one of the most respected suppliers of residential and commercial garage doors in the North East. Careful attention to detail, the highest quality construction, and unique features are built into each and every door we install. And regardless of the model or style you choose, you can be confident that your door is the finest available and will add security, beauty and value to your home or business.


Sermac’s Suppliers

  • Warm Protection Garage doors
  • Henderson Garage Doors
  • Marian Doors
  • Bradbury Group
  • Hurman Garage Doors
  • Gliderol Garage Doors
  • McArthur Group
  • Hart Door Systems

Sermac is a Newcastle upon Tyne based company with customers throughout the North East including Tyne & Wear, County Durham, Northumberland and Cleveland with clients in Newcastle, Gateshead, Sunderland, Durham, Middlesbrough, Hartlepool, Darlington, Washington, Chester Le Street, Consett, Stanley and the Borders.