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Notching Slab For Patio Door -- How?

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Notching Slab For Patio Door -- How? jim evans 08-06-2005
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Posted by jim evans on August 6, 2005, 1:33 pm


I have 4 patio doors. The builder did not recess them below the slab
so the leak water under the track ruining carpets and rotting the
walls at the end of the tracks. I am intending to replace at least
one of these doors. When I do this I want to notch the slab so the
replacement door sits below the upper surface of the slab. But,
there's very little room to do this. A deck comes almost up to the
slab on the outside.

How do I cut a neat notch for the door track? It must be fairly level
and I would like the cuts on the inside edge and at each end to be
neat and square.

I assume I use a diamond blade on a circular saw to cut the long
inside cut but how to make the end cuts without cutting the deck and
how to get the concrete block out of the notch area?

Here's a crude drawing of the situation
http://img324.imageshack.us/img324/917/patiodoor0ml.gif


jim


Posted by Mikepier on August 6, 2005, 12:07 pm


Jim, if you recess them below the slab, won't the problem be worse?
Because now you are trapping water in the track below the slab line.
It seems it would be better to leave the track above the slab. Is the
water coming from rainstorms?



Posted by jim evans on August 6, 2005, 3:08 pm


wrote:

> Is the water coming from rainstorms?

Yes.

jim


Posted by Roger Taylor on August 6, 2005, 12:32 pm



"jim evans" >
I have 4 patio doors. The builder did not recess them below the slab
> so the leak water under the track ruining carpets and rotting the
> walls at the end of the tracks. I am intending to replace at least
> one of these doors. When I do this I want to notch the slab so the
> replacement door sits below the upper surface of the slab. > how to get
> the concrete block out of the notch area?
I don't think you want a notch at all, unless it is "open", with no dam on
the deck side of the slot.. That would collect water, and corrode the door
frame, as well as continue to leak. There was indeed something wrong with
the installation, but just what that was it what you need to address, before
repair. Suggest you have more than one patio door installer by, with good
local recommendations, to give you an estimate, and ask what they think is
wrong with the install, and what they propose to do. Also might consult DIY
patio door books.. You could also consider doing minor repairs to the base
jamb, then install a permanent roof or awning over the door, keeping most
rain off the doors.
Looking at google, there are many door install guidelines available.
One is at
http://www.blackanddecker.com/ProjectCenter/DocumentView.aspx?DOC_ID=p_2_76_20149_20175_20214.html




Posted by jim evans on August 6, 2005, 3:21 pm


wrote:

>I don't think you want a notch at all, unless it is "open", with no dam on
>the deck side of the slot.. That would collect water, and corrode the door
>frame, as well as continue to leak.

If you look at the top figure in my sketch you will see there's about
a small (3/8" -1/2") gap between the slab and the deck.

>Suggest you have more than one patio door installer by, with good
>local recommendations, to give you an estimate, and ask what they think is
>wrong with the install, and what they propose to do.

I had a professional installer tell me the door track should sit in a
recess in the slab. This recess should be from 1" to 1 1/4" lower
than the slab. This is what prevents the water intrusion. They
cannot simply sit on the same grade as the slab or they will always do
what mine is doing.

That's almost a direct quote.

jim


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