Envelope Architecture
& Consulting

Designing Better Buildings

Helping Contractors Build Better 

Solving Chronic Building Issues

We Do it all

About EAC

Envelope Architecture & Consulting is a full-service Architecture and Consulting firm that specializes in Building Envelope Design, investigations and assessments of historic and contemporary buildings. EAC is also an accredited Building Enclosure Commissioning Process Provider. While much of our work is focused on investigation, diagnosing and preparing solutions for existing buildings with problems, we also offer our clients support for new construction.  If you are preparing to design a new project or just trying to maintain your existing building but are having trouble, EAC can help.   


Chestnut Street Apartments

We are excited to be part of another project with Archetype Architects.  This new seven story apartment building will be part of the Bayside neighborhood revitalization.  EAC is once again providing the exterior envelope drawing package for our client.  Roof plans and details, wall sections, details and product selection are just some of the services we offer. 

0 Hancock Street - WEX

 EAC  is thrilled to be part of this amazing project.  The new facility for  WEX in down town Portland is currently being designed by our client  Archetype.  We have been asked to consult on the exterior of the  building and assist with the envelope design.  This project includes  curtain wall glazing, structural glazing and metal panel exterior.  A  roof top plaza will also be part of this project.  Thank you to Archetype  for including EAC in this amazing project.     

Atkinson Fire Station Investigation

 EAC was called upon by RWH Architects to consult on the Atkinson Fire Station in Atkinson, NH.  The Fire station was built 17 years ago and started showing signs of deterioration behind the siding last year.  Along with RWH, EAC did a complete exterior destructive investigation and provided the client with a full findings report and presentation to the town.  Our report cites causes of failure, tracking of water infiltration, the extent of damage and recommendations for repair. 



We offer full service Architectural Design Services ranging from custom homes and additions to commercial projects:

Homes and Additions

Programing and Planning

Permitting and Permit Drawings

Custom Homes


Builder Packages

Spec Homes 

Subdivisions Multi Build

Realtor Consultations

Shoreland Zone

Building Envelope Consulting Services

Envelope Experts specializing in all aspects of contemporary and historic architecture facade:

Building Assessment Reports

Destructive and Non-Destructive Investigations 

Repair Documents and Details 

Findings Reports

Assessment and Project Management 

Window Assessments and Replacement 

Roof Assessments and Replacement 

Moisture Infiltration Investigations

Failing Masonry and flashing systems

Professional Consulting

ENVELOPE Architecture and Consulting  offers professional services to all Design and Business Professionals  in a Collaborative team approach. Some of the services we offer are: Construction Document Review 

Building Envelope Commissioning

Mock-Up Planning and Review

Owners Representative Services

Post Construction Services

Professional Litigation Support

Historic Restoration Planning

Homes & Condominiums

Product recommendations

What people are saying

Home Renovation - Yarmouth, Me

 "David is more than just a creative and talented architect, he has unique knowledge and practical sensibilities that enabled us to navigate a slew of complex fire issues and the permitting process in Portland. Our second project here in Yarmouth was a hybrid mixed use property. He did our drawings, referred us to a talented structural engineer and devised an elegant solution to a difficult problem."  

Kate Carey & Charlie Hewitt Yarmouth ME.

Historic Building Restoration - Portland, Me

"David's impressive depth of knowledge and experience was always apparent  ~ whether dealing with large challenges or in his meticulous attention  to the smallest of details.  His working relationships with craftsmen  and others in the building trade are impressive. He  made sure all contractors on the site were up-to-speed with our  numerous (and unique) building circumstances and was always available to  me, in person or electronically, for questions or concerns. "   

Barbara Martin, The Episcopal Diocese of Maine  

Construction Industry Professionals

"David has earned the respect of many across the state of Maine.  His in depth knowledge of architecture and building performance gives him the ability to assist property owners with any architectural needs they may have"

Heather McNally, Co- Owner of Safe Harbor Inspection Services and Certified Code Officer

 "Our company worked with Mr. Douglass on a large exterior renovation project at the Bar Harbor Town Hall. Dave was very responsive and extremely helpful with all of our needs throughout the project. I would highly recommend Mr. Douglass to future clients."    

Justin King, Owner of King Construction Services

 " Knowles has worked with Dave for 7 or 8 years now on dozens of masonry and concrete repair projects. The plans and specifications have always been clear and concise. Any time information is needed and questions asked, Dave provides answers back in a timely manner. He certainly helps keep the project moving forward and it had always been a pleasure working with him. "

Travis Whited, Vice President Knowles Industrial Service

Design Professionals

" As a busy practicing architect trying to keep up on the latest envelope technology then relying on in house staff to properly  detail our buildings  is always challenging . Having David Douglass on our team  advising and detailing  exterior envelope systems keeps us on schedule and out of potential liability issues with a leaking building  . I find the  investment in hiring David to be cost effective, yielding a better building with the latest technology . A very sound investment for any architectural firm."

David Lloyd - Archetype PA,  Maine licensed Architect 


"RWH Architect had the pleasure of working with Mr. Douglass recently.   We utilized David as a subject matter expert for a complicated building  forensics investigation.  His expertise was invaluable in determining  the cause of the issue and improved the quality of our report to the  building owner.  David brings a unique value to the table as his  experience as a talented architect also warrants logical and attractive  detailing solutions.  His knowledge encompasses many construction types.   I recommend David without hesitation."

Robert W. Hannon, AIA, Principal at Robert William Hannon Architect PLLC


Contact Us

Drop us a line!

Please contact Us

ENVELOPE Architecture & Consulting

David Douglass AIA - Principal


Maine, New Hampshire and Massachusetts  Licensed Architect

101 Whites Bridge Rd, Windham, Maine 04062, United States

(207) 807-6661