2026 Historic Preservation Month
May 29, 2026
Historic buildings have a way of making us slow down. Maybe it’s the craftsmanship you
Open the Envelope
Featured Posts
Why Engineers Seem “Picky”—and Why Building Owners Should Be Glad They Are
May 19, 2026
There is a familiar stereotype in the design and construction industry: engineers are rigid, overly
Pick a Lane: Why Indecision Can Be Risky on the Road—and in Your Building
May 19, 2026
One thing I have learned since moving to the Boston area a number of years
Post Category
Mortar Types and Mortar Joint Profiles in Masonry Restoration
In masonry restoration, the spotlight often falls on the brick, stone, or terra cotta. Yet
Hofstadter’s Law and the Exterior Restoration Schedule
Hofstadter’s Law: engineers & physicists are doomed to be nerds… No…wait… we are talking about
From Thinking to Doing: What The Bomber Mafia Can Teach Us About Exterior Restoration
In The Bomber Mafia, Malcolm Gladwell sets up a sharp contrast between Haywood Hansell and
Rust Jacking in Existing Buildings: Understanding the Cause, Impact, and Prevention
Rust jacking is one of the most destructive yet often hidden deterioration mechanisms affecting older
Introducing Michael Olayo, Building Envelope Consultant
Duffy is proud to welcome Michael Olayo as Building Envelope Consultant in our New York
Introducing Steven Lockwood, Senior Building Envelope Consultant
Duffy is proud to welcome Steven Lockwood as Senior Building Envelope Consultant in our Massachusetts