David Bolton ADA Wheelchair Ramp Thresholds at Occupied Buildings: How the Offset Spec Gets Chosen in the Field What This Guide Covers and Who It Helps Selecting an ADA-compliant wheelchair ramp threshold for an already-occupied building is a different problem than specifying one on a new build. The door exists... ADA compliance accessibility retrofit commercial door hardware threshold hardware wheelchair ramp threshold Apr 23, 2026
David Bolton Door Bottom Shoes vs. Sweeps: Choosing the Right Assembly When the Floor Condition Changes The Problem Starts at the Floor, Not the Door This article helps contractors, facility managers, and architects understand when a door bottom shoe is the right call versus a simple sweep or automatic ... door bottoms door maintenance seals and sweeps threshold hardware weathersealing Apr 23, 2026