When There is a Heavy Rain our Carpet Gets Wet Along an Exterior Wall. How Could the Rain be Coming in?

Updated December 11, 2020
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Question by Guest_9117904: When there is a heavy rain our carpet gets wet along an exterior wall. How could the rain be coming in?

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Answered by ContractorDon: Unless the wall involved is a masonry wall that is partially below grade with water collecting at the base my bet would be you have a roof leak.

You should go outside durring a rain storm and if this wall is at grade level see if there is any ponding near the foundation or bottom of the wall. I have seen even wood walls that either due to poor construction planning or landscape changes be below grade level. If no ponding it is either from a roof leak or possibly a window or door has bad flashing. If from a window or door it would probably be more sporadic and only happen when the wind pushes the rain against the wall. It could also be comming from a siding problem.

As I said my bet would be that it is a roof leak and the reason you see it at the base of the wall is the way your house was insulated. I would bet that the house was insulated with unfaced insulation and the as a vapor barrier sheet polyethelene was installed over the bottom of the rafters and then the walls. If installed in that order even if it was not taped at the seams almost all the water will flow down to the base of the wall and not show on the ceiling or walls. This is one of the better ways to install a vapor barrier as it is a tighter seal.

You could check the grade outside this wall before you call a roofer but odds are a roofer is needed and you should be able to find one under the home section of Browse by Category.


Answered by Guest_9117904: Thank you! We have a 2 story home and the ground level is the one that is wet. I checked the attic and there are no signs of leaks or dampness. The rooms upstairs are fine. I did go outside and look along the wall that is damp and it appears the soil in the garden there is high- above the foundation level and even with the weeping holes. Could that be the culprit? I am going to dig it up anyway and get it to code. I am hoping this solves the issue.

Answered by ContractorDon: As a general rule you should have at least 8" of exposed foundation exposed. Most of the reasoning behind that is to let you see termite tubes. You do need at least half that and I would prefer every bit of the 8"


Answered by LCD: Click on the Home > Basement Waterproofing link under your question, and you will find all kinds of prior questions like yours, IF this is a basement / foundation leakage issue rather than leaking siding or window or roof.

First thing to check is for standing water outside the house during heavy rain, or roof runoff getting up against house.

Answered by Guest_9117904: Thanks everyone!! We found the issue. We had the soil around the house lowered, brick and mortar repaired and sealed and gutters replaced. We haven't had a drop of water since. Everyone's feedback was so helpful. It enabled us to do some poking around and decide what to try first. I am beyond happy with the repairs and results. Thank you!!!

Answered by LCD: Thank you from all of us contributors for your followup report - it is very rare for the contributors here to hear back as to whether their suggestions helped - and even if not, we can learn for future replies when we hear that our suggestions did not help because the issue was something we did not address, or that we were just plain off the mark.

Glad your issue is solved - keep an eye on that every 6 months or so for a few years, because if the regrading involved fill it will settle ovear time and may need a bit of re-raking to keep the slope away from the house.

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