David Bolton Wall Bumpers on Adjacent Walls: Picking the Right Stop When the Floor Is Not an Option When the Floor Stop Does Not Work, the Wall Has to Do the Job This article covers wall bumpers used on adjacent or side walls -- the hardware solution for doors that swing parallel to or close to a wa... commercial hardware door hardware door stops facility maintenance wall bumpers Nov 6, 2026
David Bolton Sweep Speed vs. Latching Speed on a Door Closer: Two Valves, Two Jobs, One Door That Actually Closes Right What This Article Covers and Who It Helps If a door is slamming, bouncing off the latch, closing too slowly to latch on a fire corridor, or swinging shut so fast it catches a resident in a healthcare ... closer adjustment commercial hardware door closers facility maintenance fire door compliance Oct 31, 2026
David Bolton Hinge Backset and Door Swing Geometry: Why the Width Formula Matters Before You Order What This Article Covers and Who It Helps When a door refuses to open past 90 degrees, binds against trim, or leaves inadequate ADA clear width, the root cause is often a hinge width calculation that ... ADA compliance commercial hardware door geometry hardware specification hinges Oct 31, 2026
David Bolton Why Outswing Doors Need a Parallel Arm Closer: Getting the Mount Right the First Time The Problem With Outswing Doors and Standard Closer Arms This article explains why outswing doors demand a parallel arm closer configuration, how the mount works mechanically, where installers go wron... closer installation commercial hardware door closers outswing doors parallel arm Oct 23, 2026
David Bolton Why Your Commercial Door Is Dropping at the Latch: Diagnosing and Fixing Hinge Sag What Is Hinge Sag, and Why Does It Matter? Hinge sag is the gradual downward drift of a door's latch edge caused by failure or fatigue in one or more of the hinges supporting it. On a commercial openi... commercial hardware door alignment door maintenance facility management hinges Oct 21, 2026
David Bolton Particleboard Core Wood Doors: Where They Fit, Where They Fall Short, and How to Spec the Hardware Right What This Guide Covers This article explains what particleboard core wood doors are, where they are commonly specified in commercial and light-commercial construction, and what hardware decisions hing... commercial hardware door cores fire-rated doors interior door hardware wood doors Sep 19, 2026
David Bolton Pull Side vs. Push Side Closer Mounting: How to Choose the Right Position Before the Door Goes In Why Mounting Position Is the First Closer Decision, Not the Last This article explains the practical difference between pull-side and push-side door closer mounting, when each position is the right ca... closer mounting commercial hardware door closers parallel arm pull side push side Sep 19, 2026
David Bolton ADA Closer Spring Force: The Field Adjustment That Determines Whether Your Door Passes or Fails What This Article Covers -- and Who Needs It A door closer that is wound too tight is one of the most common ADA compliance failures in commercial buildings -- and one of the easiest to miss during a ... ADA compliance accessibility commercial hardware door closers spring force Sep 16, 2026
David Bolton Closer Torque Rating vs. Door Inertia: Why the Physics of Your Opening Determines the Right Closer Size What This Article Covers -- and Who It Helps When a closer fails to latch a heavy corridor door or slams shut faster than it should, the instinct is to blame the spring adjustment. The real cause is u... ADA compliance ANSI A156.4 closer sizing commercial hardware door closers Sep 6, 2026
David Bolton Cam-Action vs. Rack-and-Pinion Door Closers: Which Mechanism Belongs on Your Opening? Two Mechanisms, One Job -- But Very Different Results This article explains the mechanical difference between cam-action and rack-and-pinion door closers, when each design has the advantage, and how t... ADA compliance cam-action closers commercial hardware door closers specification guide Sep 5, 2026
David Bolton Door Closer Spring Size by Door Width and Weight: Getting the Number Right Before You Install Why Spring Rate Is the First Closer Decision, Not an Afterthought This article helps contractors, facility managers, and specifiers choose the correct door closer spring size based on door width and w... ADA compliance closer sizing commercial hardware door closers spring rate Sep 4, 2026
David Bolton Plain Bearing vs. Ball Bearing on a Door with a Closer: Why the Closer Is the Decision-Maker The Closer Changes Everything About How a Hinge Wears This article is for commercial contractors, facility managers, and architects who are specifying or replacing hinges on doors that carry a door cl... commercial hardware door closers hardware specification hinges maintenance Sep 3, 2026
