Cauk/Filler for Expansion joint

Posted by Todd on May 31, 2007, 10:17 am

Folks,

I am looking to fill the expansion joint between my slab of my
basement, and the outside walls. A little history:

We had a bit of water in the basement - came up through the expansion
joint at one edge of the basement. Sure enough, there was negative
drainage allowing snow-dammed water to leak into the house.

I have repaired that issue (put a french drain in) but I'd like to
take an extra precaution while I have everything ripped out of my
basement. I understand that filling this gap is not going to solve
any leaking problems that I might have...i'm just looking to cover all
bases.

Does anyone have any suggestions as to what I can use to fill the
joint? It would need to be:

a.) water proof
b.) expandable/contractable/flexible with the movement of the slab.
c.) resiliant to the tests of time. (it should last a long time.)

- Thanks in advance,

Todd

Posted by Meat Plow on May 31, 2007, 10:47 am

On Thu, 31 May 2007 07:17:13 -0700, Todd wrote:

> Folks,
>
> I am looking to fill the expansion joint between my slab of my
> basement, and the outside walls. A little history:
>
> We had a bit of water in the basement - came up through the expansion
> joint at one edge of the basement. Sure enough, there was negative
> drainage allowing snow-dammed water to leak into the house.
>
> I have repaired that issue (put a french drain in) but I'd like to
> take an extra precaution while I have everything ripped out of my
> basement. I understand that filling this gap is not going to solve
> any leaking problems that I might have...i'm just looking to cover all
> bases.
>
> Does anyone have any suggestions as to what I can use to fill the
> joint? It would need to be:
>
>
> a.) water proof
> b.) expandable/contractable/flexible with the movement of the slab.
> c.) resiliant to the tests of time. (it should last a long time.)
>
>
> - Thanks in advance,
>
> Todd

Silicone rubber fits your criteria.

Posted by Todd on May 31, 2007, 11:25 am

> On Thu, 31 May 2007 07:17:13 -0700, Todd wrote:

> > Folks,
> > I am looking to fill the expansion joint between my slab of my
> > basement, and the outside walls. A little history:
> > We had a bit of water in the basement - came up through the expansion
> > joint at one edge of the basement. Sure enough, there was negative
> > drainage allowing snow-dammed water to leak into the house.
> > I have repaired that issue (put a french drain in) but I'd like to
> > take an extra precaution while I have everything ripped out of my
> > basement. I understand that filling this gap is not going to solve
> > any leaking problems that I might have...i'm just looking to cover all
> > bases.
> > Does anyone have any suggestions as to what I can use to fill the
> > joint? It would need to be:
> > a.) water proof
> > b.) expandable/contractable/flexible with the movement of the slab.
> > c.) resiliant to the tests of time. (it should last a long time.)
> > - Thanks in advance,
> > Todd

> Silicone rubber fits your criteria.

Can you recommend a brand of silicone rubber that would work for me?

Posted by Meat Plow on May 31, 2007, 2:07 pm

On Thu, 31 May 2007 08:25:25 -0700, Todd wrote:

>> On Thu, 31 May 2007 07:17:13 -0700, Todd wrote:

>> > Folks,
>> > I am looking to fill the expansion joint between my slab of my
>> > basement, and the outside walls. A little history:
>> > We had a bit of water in the basement - came up through the expansion
>> > joint at one edge of the basement. Sure enough, there was negative
>> > drainage allowing snow-dammed water to leak into the house.
>> > I have repaired that issue (put a french drain in) but I'd like to
>> > take an extra precaution while I have everything ripped out of my
>> > basement. I understand that filling this gap is not going to solve
>> > any leaking problems that I might have...i'm just looking to cover all
>> > bases.
>> > Does anyone have any suggestions as to what I can use to fill the
>> > joint? It would need to be:
>> > a.) water proof
>> > b.) expandable/contractable/flexible with the movement of the slab.
>> > c.) resiliant to the tests of time. (it should last a long time.)
>> > - Thanks in advance,
>> > Todd

>> Silicone rubber fits your criteria.

>
> Can you recommend a brand of silicone rubber that would work for me?

Dow Corning, DAP, even hardware store brands like True Value. If it's
going to be damp you can get a mold and mildew formula. I steer clear of
GE because it caused me grief when I caulked in a shower surround and the
stuff didn't cure even after 4 days. Man what a mess that was to remove
and re-prep.

Posted by Roger on May 31, 2007, 11:54 pm

>> Can you recommend a brand of silicone rubber that would work for me?

> Dow Corning, DAP, even hardware store brands like True Value. If it's
> going to be damp you can get a mold and mildew formula. I steer clear of
> GE because it caused me grief when I caulked in a shower surround and the
> stuff didn't cure even after 4 days. Man what a mess that was to remove
> and re-prep.

All these products would work, but I would include GE 100% pure silicone
adhesive and sealer. It is unpaintable, but tougher than all the paintable
types. Only trouble I've had with GE is when i use it beyond the "good
until" date printed on the bottom of the cartridge - then it indeed will not
set properly. Make sure whatever brand you use, that it is fresh (date will
be printed somewhere)
Roger

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