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What should a leak-diagnosis visit include before the wall is opened?
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I’m trying to budget for a recurring leak around a replacement window and want to avoid paying for interior repairs before the water path is understood. The window is a replacement unit, but I’m still confirming its approximate age and whether it’s an insert or a full-frame installation. Water shows up indoors near the window during heavier rain, especially when wind is involved; it isn’t an everyday drip.
For this kind of problem, is it sensible to pay for a targeted investigation first rather than immediately approving exterior sealant, flashing work, or opening the wall? I’d like the contractor to explain what the visit includes, such as reviewing the window and surrounding exterior, identifying likely entry points, and performing a controlled water test when appropriate. I’m not looking for a generic caulking recommendation if the actual issue could be flashing or installation.
I’m planning to request separate amounts for:
- the inspection and leak investigation
- any controlled water testing
- exterior sealant repair
- flashing or installation-related repair
- an allowance for opening and restoring part of the interior wall if non-destructive testing can’t locate the path
Which parts of that scope can usually be quoted with reasonable confidence before the cause is confirmed? At what point is limited destructive investigation justified, and what should a useful written report or repair proposal document?
2 replies
I wouldn’t treat “a controlled water test” as one broad spray over the whole window and wall. If testing is appropriate, it’s more useful to wet one area at a time and record where and when water appears. Spraying everything at once may reproduce the leak but won’t distinguish the entry path.
Since the leak shows up near the replacement window mainly during wind-driven rain, I’d ask for a written record of where water first appears indoors and how long after the test it shows up. The contractor should also document the window’s head, jambs, and sill, plus the adjacent cladding, and note which non-destructive checks didn’t narrow down the path. That gives you a much clearer basis for deciding whether a limited wall opening is warranted, rather than treating it as the next default step.
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