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Crawlspace Maintenance johnnymo 09-06-2006
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Posted by johnnymo on September 6, 2006, 4:05 pm

Ok crawlspace gurus.....

I just bought my first house for a pretty good deal (I think), but the
crawl space needs work. It is an older 1968 ranch house located in
Atlanta with about a 3 to 4 foot crawlspace. I noticed the crawlspace
was kind of moist when I bought it, but I recently did some work on one
of my bathrooms and had the complete bathroom floor pulled up down to
the joists and noticed that on heavy rains (recent effects of FL
hurricanes), water is just flowing in like a slow creek. How did I see
the water...b/c I don't have a vapor barrier either. So the water is my
first issue, but I don't want to put a vapor barrier before getting the
water to stop.

Second issue: Venting? I have some vents that have been blocked off by
the previous owners (piece of sheet metal or something). Not all of the
vents are blocked though. So, what is the rule of thumb for this. Are
there certain vents you block due to the direction they are facing?
Should I block them all? Block during certain seasons?

I had a crawlspace "expert" give me an estimate of $10,000 to cover
1000 sq feet of crawlspace. I politely declined his offer....

Any suggestions on steps to improving my crawlspace?


Posted by tbasc@bellsouth.net on September 6, 2006, 4:19 pm

johnnymo wrote:
> Ok crawlspace gurus.....
>
> I just bought my first house for a pretty good deal (I think), but the
> crawl space needs work. It is an older 1968 ranch house located in
> Atlanta with about a 3 to 4 foot crawlspace. I noticed the crawlspace
> was kind of moist when I bought it, but I recently did some work on one
> of my bathrooms and had the complete bathroom floor pulled up down to
> the joists and noticed that on heavy rains (recent effects of FL
> hurricanes), water is just flowing in like a slow creek. How did I see
> the water...b/c I don't have a vapor barrier either. So the water is my
> first issue, but I don't want to put a vapor barrier before getting the
> water to stop.
>
> Second issue: Venting? I have some vents that have been blocked off by
> the previous owners (piece of sheet metal or something). Not all of the
> vents are blocked though. So, what is the rule of thumb for this. Are
> there certain vents you block due to the direction they are facing?
> Should I block them all? Block during certain seasons?
>
> I had a crawlspace "expert" give me an estimate of $10,000 to cover
> 1000 sq feet of crawlspace. I politely declined his offer....
>
> Any suggestions on steps to improving my crawlspace?

Look at the Building Science Corporation web site.
It includes researched suggestions for a lot of issues from crawl space
to attic.
I use it with success for work in and around Charleston SC.
Atlanta means you probably have clay soil which doesn't drain well.
Look at the surrounding land forms and talk to your neighbors.
The standard first steps are to move water from the roof away from the
building, and make sure surface drainage is away from the building.
It's usual for planting around the building perimeter to raise the
ground surface above the crawl space and so cause water to drain into
the crawl space and sit.
Long term water in the crawl space leads to deterioration of the wood
frame as a result of high humidity.
Let us know more detail.
TB


Posted by hallerb@aol.com on September 6, 2006, 4:19 pm
You need to install a french drain around or under your home to prevent
standing water. hopefully you have a low area to redirect it too.

then cxover crawlspace floor with 10 mil poly overlapped and sealed
with tape.

theres disagreement about venting I believe its better and the more
vents the better so trapped moistiure does not accumulate.

Its just hard grunt work thik of it as excellent exercise:)

Increase the value of your home!

Make CERTAIN all downspouts direct water well away from your home!


Posted by HeatMan on September 6, 2006, 4:33 pm
My former house had a wet crawlspace, but no flowing water.

I covered the dirt with some fairly thick plastic (also called VisQueen for
some reason). Any 'joints' were overlapped by at least 2 feet and I did
place some loose dirt to hold the plastic down, as I did use the crawl for
some limited storage.

Another thing I did was to install foundation vents on the east side, as
there were 3 vents existing on the south. That house was near ground level
on the front with a partial walk-out basement to the rear. The vents I
installed were the thermostatic ones that open and close according to the
air temp in the crawl. I should have installed a couple on the north
(uphill) side, but the way I had the landscaping prevented that.

All this reduced the moisture in the crawl to pretty good levels.

As my handle suggests, I do heating and air for a living. I am in and out
of crawlspaces a lot. I've seen thermostatically and humidistat controlled
attic gable vents in crawls. The best thing I can tell you is to make sure
the dirt is covered and you have good ventilation. You also need to
re-landscape to keep the flowing water out of the crawlspace.


>
> Ok crawlspace gurus.....
>
> I just bought my first house for a pretty good deal (I think), but the
> crawl space needs work. It is an older 1968 ranch house located in
> Atlanta with about a 3 to 4 foot crawlspace. I noticed the crawlspace
> was kind of moist when I bought it, but I recently did some work on one
> of my bathrooms and had the complete bathroom floor pulled up down to
> the joists and noticed that on heavy rains (recent effects of FL
> hurricanes), water is just flowing in like a slow creek. How did I see
> the water...b/c I don't have a vapor barrier either. So the water is my
> first issue, but I don't want to put a vapor barrier before getting the
> water to stop.
>
> Second issue: Venting? I have some vents that have been blocked off by
> the previous owners (piece of sheet metal or something). Not all of the
> vents are blocked though. So, what is the rule of thumb for this. Are
> there certain vents you block due to the direction they are facing?
> Should I block them all? Block during certain seasons?
>
> I had a crawlspace "expert" give me an estimate of $10,000 to cover
> 1000 sq feet of crawlspace. I politely declined his offer....
>
> Any suggestions on steps to improving my crawlspace?
>



Posted by crabshell on September 6, 2006, 5:39 pm
@i42g2000cwa.googlegroups.com:

>
> Ok crawlspace gurus.....
>
> I just bought my first house for a pretty good deal (I think), but the
> crawl space needs work. It is an older 1968 ranch house located in
> Atlanta with about a 3 to 4 foot crawlspace. I noticed the crawlspace
> was kind of moist when I bought it, but I recently did some work on one
> of my bathrooms and had the complete bathroom floor pulled up down to
> the joists and noticed that on heavy rains (recent effects of FL
> hurricanes), water is just flowing in like a slow creek. How did I see
> the water...b/c I don't have a vapor barrier either. So the water is my
> first issue, but I don't want to put a vapor barrier before getting the
> water to stop.
>
> Second issue: Venting? I have some vents that have been blocked off by
> the previous owners (piece of sheet metal or something). Not all of the
> vents are blocked though. So, what is the rule of thumb for this. Are
> there certain vents you block due to the direction they are facing?
> Should I block them all? Block during certain seasons?
>
> I had a crawlspace "expert" give me an estimate of $10,000 to cover
> 1000 sq feet of crawlspace. I politely declined his offer....
>
> Any suggestions on steps to improving my crawlspace?
>


My home has crawl space and according to my inspector, I'm to leave the
vents uncovered in the summer and closed off in the winter.

-crabshell

Page 1 of 2       1 2 > last >>
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