[Greenbuilding] Waterproofing edge of Concrete slab with 6x6 PT lumber on top

Sacie Lambertson sacie.lambertson at gmail.com
Sun Oct 9 12:08:33 CDT 2016


I too have been unable to find any Roxul product here in the midwest
(Kansas) except their batts. Home Depot is supposed to be able to order
Comfortboard but does not seem to be able to accomplish this. (Apparently
it is their middle man, Primesource, that does not have its act together
and is therefore doing a considerable disservice to Roxul).  Too bad too,
since it's a good product and I would love to use it.  The person who
responds to inquiries in Canada tries to be helpful but local distribution
is useless.

Sacie

On Fri, Oct 7, 2016 at 4:53 PM, Jeff Martin <jeff at open2learn.ca> wrote:

> Lynelle,
>
> I think the product that Norbert is suggesting is actually called Drain
> *board* and you may have some difficulty sourcing it. When I tried to get
> some last summer, I was told that I needed to order a whole truckload.
> Things may have changed since then, but an alternative is Roxul
> Comfortboard, which has very similar characteristics and is much more
> readily available in the retail market. If you choose, you can also extend
> the Comfortboard up the wall, in place of the EPS, since that's what it's
> primarily designed for.
>
> Depending on how important it is to you to keep the wall dry, you may also
> want to apply waterproofing to the wall and footing, behind the
> Comfortboard. I used a membrane from Resisto, but there are other good
> options available. Note that you will need to protect the exposed portion
> of the Comfortboard.
>
> I should also note that, while the Drain/Comfortboard has many desirable
> characteristics, it is much more expensive than EPS.
> Jeff
>
>
> On 10/7/2016 11:44 AM, Lynelle Hamilton wrote:
>
> Thanks, Norbert.   I can pick up Drainclad and run it a bit above the berm
> line.
>
> Lynelle
>
> On 2016-10-07 10:55 AM, Norbert Senf wrote:
>
> I find foam anywhere where moisture+air may get at it to be scary. I've
> seen it become habitat for carpenter ants (and probably termites once they
> come North).
> Maybe replace the foam on the bermed portions with Roxul Drainclad? It's a
> semi-rigid mineral wool insulating board designed to direct water down to a
> drainage tile..............N
>
> On Fri, Oct 7, 2016 at 9:24 AM, Lynelle Hamilton <lynelle at lahamilton.com>
> wrote:
>
>> Hi All,
>>
>> I can't find a good answer to this, so thought that I would post.
>>
>> My garage was moved to its current site. It has an 8" poured concrete
>> floor, on top of which was placed 6x6 PT, onto which the garage structure
>> is bolted. The edge of the concrete slab is exposed, as well as the PT --
>> all above grade.
>>
>> The property has a high water table. My septic, regardless of type, will
>> require a raised bed that will cover this exposed area on 1 and possibly 2
>> walls. I need to ensure that I protect this wall from water.  I will do all
>> 4 walls with the same process as used for these two.
>>
>> Any ideas as to what is best? The above grade will have EPS 2" plus wood
>> siding. Do I extend the EPS to this wall and waterproof on top? If so, how
>> do I avoid seepage into the area between the EPS and the wall?
>>
>> I've looked at *B**ituthene,* but have no idea if it is the best
>> approach.
>>
>> Many thanks for your thoughts.
>>
>>
>> Lynelle
>>
>>
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>
>
>
> --
> Norbert Senf
> Masonry Stove Builders
> 25 Brouse Road, RR 5
> Shawville Québec J0X 2Y0
> 819.647.5092
> www.heatkit.com
>
>
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