Our climate is uniquely hard on seals, swinging from freeze-thaw January mornings that crack rigid caulk to steamy August afternoons that grow mildew in a shower joint. That constant expansion and contraction opens exterior gaps around Lebanon's window and siding trim a little wider each year, and in the older homes the original joints have long since given up. Flexible, climate-matched products are the only ones that keep up out here.
Caulking and weatherproofing in Lebanon is priced by the number and length of joints and how much old, failed caulk has to be stripped out first, since removal is often more of the work than the new bead. Exterior work depends on access and height around windows, trim, and siding. The product matters — mold-resistant, flexible, and paintable sealants suit different spots. Adding weatherstripping and door sweeps, and whether we're sealing a whole home's drafts before winter or just recaulking a tub, all shape a fair, upfront number.
When it's cracked, pulling away from the tub, or showing mildew stains that cleaning won't lift, it's time. Failed tub caulk lets water behind the wall where real damage happens quietly, so we strip it fully and reseal with mold-resistant caulk.
It genuinely helps, especially in older Lebanon homes. Sealing gaps around doors, windows, and penetrations keeps conditioned air in through both our humid summers and cold snaps, and most folks notice rooms simply feel more comfortable.
We do, and it matters here — gaps in siding joints and window trim invite water, drafts, and insects. We reseal exterior joints with paintable, weather-rated caulk, timed to dry weather so it cures properly.
More places than you'd think — around window sashes and trim, under exterior doors with worn sweeps, at baseboards on exterior walls, and around any pipe or wire penetration. Older homes near the square are especially leaky at these spots. We seal them systematically, which usually makes rooms noticeably more comfortable and easier to keep warm.
Once mildew gets established beneath the surface of a caulk bead, cleaning only touches the top and it darkens right back. In our humidity that happens fast. The real fix is to strip the joint out completely and reseal with a proper mold-resistant caulk on a clean, dry surface, which stays clean far longer than any scrubbing will.
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