David Bolton What the Threshold Pan Gets Wrong Before the Sill Is Ever Set: A Field Guide to Flashing Details Why the Pan Under the Threshold Is the Step That Gets Skipped This article is for commercial contractors, facility managers, and architects who have watched a threshold fail within a year of installat... commercial-door-hardware installation-best-practices thresholds water-intrusion-prevention weatherstripping-and-seals Jun 29, 2026
David Bolton ADA Wheelchair Ramp Thresholds: Why the 24-Inch Width Is a Starting Point, Not a Final Measurement What This Article Covers and Who It Helps An ADA-compliant wheelchair ramp threshold is one of the last pieces of hardware ordered and one of the first to cause a punch-list problem. This guide is for... ADA compliance accessible hardware commercial doors door hardware installation thresholds May 20, 2026
David Bolton ADA Wheelchair Ramp Thresholds on Fire-Rated Openings: How the Height Limit and the Fire Listing Pull in Opposite Directions Two Standards, One Opening: Why Fire-Rated Doors Make ADA Threshold Selection Harder This article is for contractors, facility managers, and architects who are specifying or installing ADA-compliant w... ADA compliance accessible routes code compliance fire-rated hardware thresholds May 18, 2026
David Bolton When a Fire-Rated Opening Also Needs a Wheelchair Ramp Threshold: Sorting Out the Conflicts Before Closeout Two Sets of Rules, One Threshold: Why This Detail Gets Escalated at the Wrong Time This article is for contractors, facility managers, and project architects who are dealing with an accessible entranc... accessible-entrances ada-access code-compliance fire-rated-doors thresholds May 14, 2026