(214) 807-0414Request an assessmentSealant work
Caulking is the least glamorous line on an exterior painting scope and the one that decides how the job ages. It is also the line where the most damage gets done, because a painter working quickly will seal every gap on a building — including the ones that were deliberately left open so that water could get back out.
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What this covers
A bead needs to bond to two faces and stretch between them. Packed into the full depth of a cavity it bonds to three, cannot stretch, and tears. Backer rod exists to control depth and prevent that third bond. Beads that split down the middle within a year are usually telling you the rod was skipped.
Failed sealant is cut out rather than covered, the substrate is clean and dry, and some combinations want a primer. Fresh caulk applied over old failed caulk fails on the schedule of the layer underneath it, which is generally within the first season.
Weep holes in brick veneer. The bottom edge of a stucco weep screed. The underside of a window sill. Siding butt joints over a flashed seam. The gap where a soffit meets a wall on some assemblies. Each is a designed exit for water that got behind the surface, and sealing it traps the water inside the wall where nobody will see it for years.
What to know
Sealants differ in how far they can stretch, whether they take paint, and what they will bond to. A cheap painter's caulk in a joint that moves through a North Texas temperature range is a one-season repair, and it will be blamed on the paint rather than on the joint.
Across the top of step flashing. Over a stucco crack with water behind it. Around a perished pipe boot. In each case it delays the diagnosis and makes the eventual repair larger. Sealant used as a deliberate holding measure is fine; sealant used as the answer is what people mean when they say a roof was patched instead of repaired.
Which joints were opened and resealed, with which products, and — the entry that actually matters — which joints were deliberately left open and why. That note is what stops the next contractor helpfully caulking a drainage gap shut.
Choose a starting point
A short, non-diagnostic guide for working out what kind of assessment conversation to prepare for.
Decision support
Four situations, and the sensible next move for each. It does not diagnose a roof, decide insurance coverage, or stand in for somebody looking at the property.
Questions
Usually joint design rather than product. A bead bonded on three sides cannot move, so it tears the first time the joint does. Depth control with backer rod, a material rated for the movement, and a clean substrate fix nearly all of it.
Generally not. On many assemblies that gap is a drainage path, and sealing it holds water in the wall below the window. If somebody is proposing to caulk it, ask what they think the gap is there for.
It can stop one for a while, which is a genuinely useful thing when weather or a decision is outstanding. It is not a repair of the detail that failed, and describing it as one is where a lot of exterior work goes wrong.
Yes, and it should be wherever a drainage gap has been sealed shut. Weep holes in brick veneer, the bottom edge of a stucco weep screed, the underside of a sill, a siding joint over flashing — each is a designed exit, and cutting sealant back out of them is straightforward work. The harder part is knowing which gaps were meant to be open, which is exactly why the record should say which joints were deliberately left.
Assessment request
Short, routing-only questions. Nothing here asks you to diagnose the roof yourself.