Some buildings have air conditioning and heating ducts located in their floors rather than their walls or ceilings. If you encounter a floor duct when installing or sanding and finishing an existing hardwood floor and the client prefers a flush mount style vent, you’ll need to know how to install this style vent.
Armed with this step-by-step guide and the right tools for the job, the process will be quick and effective.
Step #1: Using the edges of the vent frame as a guide, use a track saw to square off where the vent will go, right above the floor duct.
We recommend using the Festool TS 55 Plunge Cut Track Saw for this step. The a track attached is perfect for this step because it gives you a smooth, zero-clearance cut and its plunge action ensures precision.
Step #2: Square the corners.
The corners must be square enough to accept the vent frame, so after creating the square in the floor using the track saw, you must use a more precise tool to pick up where the cut leaves off.
Step #3: Use a chisel to remove the pieces of the floor that you’ve freed up, and clean up dust and debris with a vacuum.
Step #4: Apply hot melt adhesive to the square you’ve created in the floor using a hot melt glue applicator like the FastenMaster HB220.
Step #5: While the adhesive is still pliable, dry-fit the frame in the opening as flush as possible to the existing floor, and secure it using a finish nailer.
We used the Bostitch GBT1850K gas air nailer to secure the frame because its lack of a compressor and a hose makes it extra convenient to use. It also weighs in at a measly four pounds compared with the heavier, battery-operated ones.
Step #6: Insert the vent into the frame. Sand it with the rest of the floor to prep it for the seal and topcoat.
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