Repair A Rotted Porch Column

By Robert Robillard on Home Repairs And Remodeling

Repair A Rotted Porch Column

Epoxy Bonding Steps:

Make sure to follow manufacturers recommendations.

Wet-out bonding surfaces-Apply a neat resin/hardener mixture (without fillers) to the surfaces to be joined. Wet out small or tight areas with a disposable brush.

Apply thickened epoxy to one bonding surface.   Apply enough of the mixture to one of the surfaces, so that a small amount will squeeze out when the surfaces are joined together with a force equivalent to a firm hand grip.

Clamp components and sse just enough clamping pressure to squeeze a small amount of the epoxy from the joint, indicating  good contact with both mating surfaces .

Remove or shape excess adhesive that squeezes out of the joint as soon as the joint is secured with clamps.

Repair A Rotted Porch Column


Once epoxy applied and the repair is inserted into the post cut out we applied bar clamps and allowed the repair to sit overnight.

Sizing Post Glue Up:

The next morning we used a power planer to take down the high spots on the Cedar glue-up and a belt sander to fine tune the repair. Once the repair and post were at the same plane, and smooth we cut the post to size. The repair and post are then finish sanded with an orbital sander and 120-grit, and primed all edges as well especially the end grain.

Back at the porch we traced the post base out on the mahogany decking and used a multi tool to cutout the decking. We then filled this cut out area with a pvc shim patch. We do this so the new structural post will not sit on top of the decking, causing problems later when deck boards need to be replaced. The pvc is planed to sit just below the deck surface and hides the post seam – nice look!

Repair A Rotted Porch Column

Installation of Repaired Post:

The post is then positioned back in place, plumbed and we countersink screws into the base and top of post. Later we cover these screw locations with wood plugs or epoxy filler or wood-filler.

With the post plumb and fastened to the header, deck and railing we then remove the temporary support post and slowly lower the hydraulic jack.

Two coats of quality paint finish the repair.

Repair A Rotted Porch Column



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About the author

Robert Robillard

Carpenter / Remodeler / Editor

Rob Robillard is “The Concord Carpenter” Rob is a builder, general contractor, carpenter, woodworker, and editor of Concord Carpenter and ToolBoxBuzz As a General Contractor and carpenter, Rob owns and operates Concord Carpenter LLC. A full-service remodeling and construction company. Rob is a recognized leader in home building best practices and a source for how-to information for building professionals. On this website, Rob covers all aspects of home construction, building science, home improvement, woodworking, remodeling, and some of the best product and tool reviews. Rob is in charge of our Tool and Product Review series - Concord Carpenter Videos where we post all of our tool reviews and video tutorials. Rob approaches remodeling and building construction with a pragmatic and problem-solving approach. He enjoys using his knowledge and experience to help and educate building professionals as well as DIYers on best practices in the construction and remodeling industry. He's a strong advocate for "raising the bar" in the construction trades and promoting the trades to youth. #BeAMentor #Green2Great Craftsmanship, quality, and pride guide his journey on this channel The Concord Carpenter's motto: "Well done is better than well said!" : Read more about Rob

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