Roofing Specialists in Downingtown, PA

Founded by John Allgyer, JMA Exteriors has grown from small gutter service to a well-respected business providing quality roofing and gutter solutions in Downington, PA. We are known for our workmanship, honesty, and reliability. From gutter guards and replacement gutters to roof repairs and new roof installation, we offer a 10-year workmanship warranty on our work. No matter the project, we use best-in-class products to accomplish the job quickly and efficiently.

Roof Installation

Whether your home is older, newer or you are looking to upgrade your roof, we are happy to walk you through your different roofing options. We specialize in installing GAF Timberline HDZ Shingles, they are especially sustainable and will protect your home for years to come. We are committed to keeping your property protected and clean throughout your roof installation. Using revolutionary equipment, including our Equipter RB4000, we easily remove debris, and leave no mess behind.

Roof Replacement

If you are noticing cracking, peeling or loose shingles, it may be time to replace your roof. Our GAF certified installers will help you determine the best type of roof replacement for your home. We can help you select the best roofing solution that matches your aesthetic, within your budget. We even have a GAF Virtual Remodeler to help you envision what your home would look like, with the ability to try out a variety of colors and styles of GAF shingles. We are proud to help you create your perfect home!