We’re Building Success Every Day with Experience and Vision

MAPG has been providing quality glazing services for over 60 years. Currently in our third generation of family ownership, the company that once survived on providing stained glass windows for churches has grown to be an industry leader with a diverse array of projects including:

Based in Johnstown, PA, we work on projects of various sizes and complexity, typically within the Mid-Atlantic Region. For the past ten years, we’ve completed projects in the Baltimore, D.C. Metro and surrounding areas with quality service and craftsmanship. Our Pennsylvania location allows us to provide competitive prices and close proximity to Baltimore, D.C. and Virginia. Most recently, we’ve expanded our project reach to the South and Northeast.

Contact us – let’s get started on your next project >

MAPG is proud to have a team with expertise with complex building envelope systems. We also have the critical real world project experience it takes to make a project a success. We’re flexible, creative, and professional — with the goal of building a long-term partnership with you. While growing in volume and abilities, our company’s goals still revolve around its devotion to providing the highest quality work, on-time leadership, and hands-on customer service to our customers.

Company Details

Projects Completed: 300+


General Contractor Partners: 50+


Years in Business: 63


Square Feet Installed: 250,000+


Our General Contractor Clientele

Base Building

Continental Building Systems, Pittsburgh PA
Fred L. Burns Construction, Shippenville PA
Kacin Commercial Construction, Murrysville, PA
Michael Baker International, Harrisburg, PA
Morgan Keller, Frederick MD
PJ Dick Inc., Pittsburgh PA


Kacin Commercial Construction, Murrysville, PA
Max Construction, Saltsburg, PA
PJ Dick Inc., Pittsburgh, PA


Darr Construction, Berlin PA
G&G Builders Inc., Scott Depot, WV
Massaro Corporation
Morgan Keller, Frederick, MD
PJ Dick Inc., Pittsburgh, PA


Michael Baker International, Harrisburg, PA
Carolina Door Control, Columbia, MD
RQ Construction, Carlsbad, CA

Interior Projects

Rand Construction, Alexandria VA
Tripp Contracting, Lanham MD


Major Builders, Johnstown PA
RIV Construction, Sterling VA
Rycon Construction, Pittsburgh PA
StanCorp., Somerset, PA


Brickley Construction  Johnstown, PA
Michael Baker International, Harrisburg, PA
PJ Dick Inc., Pittsburgh, PA