wait time before damp or water proofing?

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mg - 29 Jul 2005 10:49 GMT

After removing forms of poured concrete foundation walls 12" thick,
what is the wait time before damp or water proofing? this time of year
and with reasonable weather it is 20 days ok?
specs say 28 day before coating or applying a membrane to a poured
concrete wall.

can it be done in less?

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BP - 29 Jul 2005 12:17 GMT

In the perfect world of code officials and spec writers the forms stay on
for 7 days and the waterproofing goes on in 28 days. A crew of 7 stands
around in between spraying the concrete with water to keep it hydrated.
In the real world of daily interest payments, weather, and payroll the forms
get stripped the day after the pour and the waterproofing guys are bumping
into the form guys on their way out. It is done all the time. Some of the
more frantic builders will backfill prior to 7 days, but this is downright
stupid.
You will be fine going 20 days, or even 7.

> After removing forms of poured concrete foundation walls 12" thick,
> what is the wait time before damp or water proofing? this time of year
[quoted text clipped - 3 lines]
>
> can it be done in less?

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Homeowner Forum / Construction / July 2005

wait time before damp or water proofing?