Exterior repairs are weather-driven. The priority is always keeping water out of the building envelope — everything else is secondary.
01Caulk failure at windows and doors
The caulk joint where window and door frames meet the siding is a primary water entry point when it fails. Check it annually. Failing caulk cracks, shrinks, or pulls away from one surface. Remove all failing material, clean and dry the joint, and apply paintable exterior caulk — not silicone, which can't be painted over. Smooth with a wet finger. This is a Saturday morning project that prevents thousands of dollars of water damage.
02Wood rot on trim and siding
Probe suspicious soft areas with a screwdriver. Sound wood resists the probe. Rotted wood accepts it. Small areas of rot on trim can be treated with penetrating epoxy consolidant, then filled with two-part epoxy filler, shaped, and painted. Large areas or rot that has spread to structural members are replacement jobs. Rot that returns after repair has a moisture source that hasn't been addressed.
03Fascia and soffit damage
Rotted fascia behind gutters is almost always caused by gutters that overflow because they're clogged, or gutters that slope back toward the house. Clean the gutters, correct the slope, and replace the rotted fascia board. Prime all cut ends before installation and paint immediately — bare wood on an exterior starts absorbing moisture on day one.
04Cracked or missing mortar — brick exterior
Mortar joints between bricks that are cracking or missing are a water infiltration path. Tuckpointing — removing the failing mortar and replacing it with fresh mortar — is a DIY repair for accessible areas. Remove the failing mortar to a depth of about 3/4 inch with a cold chisel or angle grinder. Dampen the joint, press in mortar with a tuck pointer tool, and finish flush or slightly recessed to match the existing joint profile.
Marcus Webb is a general contractor and home maintenance writer based in Columbus, Ohio. He writes about the repairs and installs that come up every year in every house — the practical, repeating work that keeps a home livable.