Commercial Door Threshold Installation in Ottawa

The threshold is the part of a commercial entrance that takes the most abuse and gets the least attention — until it fails. At this Ottawa business, years of foot traffic, carts and grit had ground the old sill down until daylight showed under the closed door. Rain pooled at the base, cold air rolled across the floor, and on warm nights insects had a clear path inside. The owner had been wedging mats and weatherstrip into the gap as a stopgap, but the only real fix was to replace the worn unit outright with a proper commercial threshold.

The Repair

We started by removing the failed sill and checking the substrate beneath it, since a threshold is only as good as what it sits on. The floor edge had taken on some moisture, so we let it dry, cleaned the bearing surface and corrected the slope before setting anything new. From there we measured the opening and cut a heavy aluminum commercial threshold to fit precisely, bedding it in a continuous bead of sealant so no water can track underneath. We shimmed it dead level, fastened it securely into the slab, and adjusted the door sweep to meet the new profile with even contact across its full width. The result is a clean, level transition that shuts tight every time the door closes — the kind of threshold and sill repair that quietly protects a building for years.

Problems We Solved

• A worn-down sill with a visible gap letting water, drafts and pests under the door.
• Moisture pooling at the entrance that was starting to damage the floor edge.
• An uneven, tripping transition at a public, high-traffic doorway.
• A door sweep no longer making contact, killing the building’s air seal.
• Mats and temporary weatherstrip that looked unprofessional to customers.

Benefits of the Repair

• A watertight seal that keeps rain, snowmelt and road grit out of the building.
• A level, accessible transition that is safer for staff and customers.
• Lower heating and cooling costs from a properly closed air gap.
• A durable aluminum threshold rated for constant commercial traffic.
• A tidy, finished entrance that reflects well on the business.

Commercial Threshold & Sill Repair Across Ottawa

A failing threshold is one of the most common commercial door problems we see across Ottawa — from ByWard Market storefronts and Centretown offices to retail units in Barrhaven, Kanata and Orleans. Ottawa’s freeze-thaw winters, road salt and steady customer traffic wear sills down faster than most owners expect, and a worn one quietly costs money in heat loss and floor damage long before anyone notices the gap. We install and replace commercial thresholds for businesses, landlords and property managers throughout Ottawa and the Ottawa Valley, sized and sealed for the way each entrance actually gets used.