.png)
Exterior Trim Repair: Fixing Rotted Fascia and Siding
Rotted fascia and siding is one of those problems that looks cosmetic but isn't. Once rot gets into your exterior trim, water follows — and water damage spreads fast. Here's how to catch it early and fix it right.
How to Spot Rot Before It Spreads
Probe suspect areas with a screwdriver. Healthy wood is hard and resists the tip. Rotted wood is soft, spongy, and the screwdriver sinks in easily. Pay special attention to: the bottom edge of fascia boards (where water sits), the ends of siding boards (end grain absorbs moisture fastest), areas around windows and doors where caulking has failed, and anywhere paint is bubbling or peeling.
Assess the Damage
Minor rot (less than 1/3 of the board's thickness) can often be treated with a wood hardener and epoxy filler. Major rot — where the board is soft through most of its thickness — requires full replacement. Never try to paint over rot or fill it with caulk. The rot will continue spreading under the surface.
Repairing Minor Rot with Epoxy
Remove all soft wood with a chisel or oscillating tool. Apply a penetrating epoxy consolidant to the remaining wood — this hardens the fibers and kills the rot fungus. Let it cure per the manufacturer's instructions, then fill the void with two-part epoxy wood filler. Shape it while it's still workable, let it cure fully, then sand, prime, and paint. Done right, an epoxy repair is harder than the original wood.
Replacing Rotted Fascia
For full replacement, use primed finger-jointed pine or, better yet, PVC trim board. PVC doesn't rot, doesn't need painting (though it can be painted), and holds up to Texas weather indefinitely. Remove the rotted board, inspect the rafter tails or sheathing behind it for secondary damage, treat any affected framing with wood hardener, then install the new board with stainless or hot-dipped galvanized fasteners.
Preventing Future Rot
Seal all cut ends of wood trim with end-grain sealer before installation. Caulk all joints and transitions. Keep gutters clean so water doesn't overflow onto fascia. Maintain paint — bare wood in Texas sun deteriorates fast. Inspect your exterior trim every spring.
Rotted fascia or siding? We handle exterior trim repairs across Red Oak and Ellis County. Call (214) 872-7785 for a free estimate.
Call (214) 872-7785