DBUG> Second foor balcony

[Paul Rabinowitz]

Hi All,

Need to detail balcony for a house. You walk out of the master
bedroom onto the balcony. The balcony is also the flat roof over the
first floor interior space below. Does anyone have a detail or wisdom
they would like to share? I'll need an interior roof drain. I figure
I'll use a waterproofing membrane sheet but I'm not sure what the
walking surface should be and how to attach the walking surface
without penetrating the waterproofing sheet.

Any help would be appreciated. Thanks in advance.

Cheers,
Paul

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[Nick Pyner]

Sounds like lightweight construction. Hardies have an American presence and
have good documetation for this sort of thing.

Nick Pyner

Dee Why NSW

Hi All,

Cheers,
Paul

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[James Horecka]

Paul,

You'll need not only an interior roof DRAIN, but also an overflow. Both must�be
sized�via mathematics for your rainfall rate.

I usually use�various proprietary decking systems. Dex-o-Tex is one, but there
are scads of 'em out there. Many finished surfaces are available. I'd�suggest
keeping it simple.

You really need a DROP from interior floor level to exterior. Shoot for 2" if
you can, to allow for the complex flashing that goes at the door threshold.

When I do commerical work, that all has to be accessible to the disabled, in
which case only 1/2" max is allowed, and that's a�real bitch. VERY difficult
to�achieve proper�flashing�there in that case.

You'll need a whole bunch of details.

Bedroom wall to deck system.

Bedroom door to deck system.

Perimeter balcony wall to deck system.

Rails to balcony wall.

Rails to deck (maybe).

Drain penetration.

Scupper penetration.

Also, I usually do a VERY carefully prepared decking elevation plan, showing
spot elevations of every corner and change, in order to comply with CBC mandated
minimum slope of 1/4" per foot. Commercial, I use minimum 1/8" per foot at
worst�flow line, and max 1/4" per foot�to comply with ADA.

All details MUST be coordinated�with the decking system you intend to use.
Flashing can be quite complex. A many-step, multi-component process when done
correctly.

Never, ever use hot mop. Bldg Dept should reject�that, anyway.

Design�for Deck Replacement, which you must understand is inevitable.

I won't send you digital files, but I can send you a PDF of a job-specific sheet
if you wish. Your job won't look like mine, tho.�Choose a�reputable system
proven in your area.

�James Horecka, AIA
Architect

----- Original Message ----
> From: Paul Rabinowitz <p...@pbrdesigninc.com>
> To: Forum <dataca...@world.std.com>
> Sent: Fri, April 22, 2011 2:22:43 PM
> Subject: DBUG> Second foor balcony
>

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[James Horecka]

Paul,

Here is a sheet that has some details. I have others.

JPG on Flickr.com:

http://tinyurl.com/3kbaox6

Decking system�is usually integrated. Multi-layer system that includes walk
surface.

There are other systems, if your client has REALLY deep pockets. They all
cost�more, in some cases MUCH more, are deeper, and far more complex.

Almost everyone does the multi-layered systems around here in SoCal. YMMV.

I've personally installed a�variety. Even redwood decks, floated over
waterproof�sub decks. See,�right there is 3.5" thick, easy, and a fortune in
cost for labor + materials. Some systems, like that redwood one, must be
removable to clean underneath (leaves, dirt, hair, gunk). Nasty, too.

I rarely opt for the pain-in-the-butt systems anymore. Much better to run with a
normal system, usually.

Dual drains a MUST, bro.�Secondary drain 2" above main drain. Plan accordingly.
No drains in the middle: Bad idea. Keep to perimeter. I've done middle drains,
but only when small balconies and perimeter lip is entirely open (no separate
scuppers or overflow drains).

1/4" minimum slope, per code, unless exceptions apply.
�James Horecka, AIA
Architect

----- Original Message ----
> From: Paul Rabinowitz <p...@pbrdesigninc.com>
> To: Forum <dataca...@world.std.com>
> Sent: Fri, April 22, 2011 2:22:43 PM
> Subject: DBUG> Second foor balcony
>

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[Hendry Arch]

I'd check out either a Grace application or a Duro-Last application.
Either should provide the protection you need with the warranty
to back it up.

I used Duro-Last on a very challenging project about 8 years
ago and have not heard any complaints since then. I also just
surveyed an existing structure that installed it (or a look-a-like)
sometime in the last 5~8 years that looks really good - other
than some obvious failures in the substrate (BELOW the membrane).
Standing water on the top of the membrane, but no leakage below.

Highest Regards,

Alan T. Hendry, RA
Alan T. Hendry, Architect
43305 Seminole Court
Coarsegold, California 93614
E-mail : al...@hendryarch.com
Voice : 559.960.9753
e-Fax : 775.261.0287

[Robert Scott]

Hi Paul,

I used the EPDM with a removable wood deck above many time but my
contractors now prefer to use either www.duradek.com or www.plideck.com
applied by an approved and properly trained installer. Plenty of details in
both PDF/DWG on both sites along with other detailed illustrations.

Robert

----- Original Message -----
From: "Paul Rabinowitz" <p...@pbrdesigninc.com>
To: "Forum" <dataca...@world.std.com>

Sent: Friday, April 22, 2011 5:22 PM
Subject: DBUG> Second foor balcony

[Paul Rabinowitz]

What is the walking surface above the durolast and how would it be =
installed? Based on something James Horecka said, I have worked out a
way that I can slope this, all in one direction, to a perimeter
gutter, thereby eliminating the roof drain, overflow drain, and or the
need for a scupper.

Cheers,
Paul

On Apr 23, 2011, at 7:56 AM, SDES...@aol.com wrote:

>> Duro-Last -Good stuff for all climates

[Paul Rabinowitz]

Thanks David. I found it on line but when I clicked on the pdf
details, I just get a blank browser screen. I have tried it with
Internet Explorer and Safari with the same results. However, I am
detailing what I can and then I'll call the company when they open on
Monday. Thanks for everyone's help on this!

Cheers,
Paul

On Apr 23, 2011, at 10:19 AM, SDES...@aol.com wrote:

>> http://www.duradek.com/
>> Sorry this was the stuff I was referring to.
>> I've used it in New England and NM - It comes in different "flavors"

[SDES...@aol.com]

Duro-Last -Good stuff for all climates

________________________________________________________________________
David K. Sargert , LEED AP

>>>>>>>>
I'd check out either a Grace application or a Duro-Last application.
Either should provide the protection you need with the warranty
to back it up.

I used Duro-Last on a very challenging project about 8 years
ago and have not heard any complaints since then. I also just
surveyed an existing structure that installed it (or a look-a-like)
sometime in the last 5~8 years that looks really good - other
than some obvious failures in the substrate (BELOW the membrane).
Standing water on the top of the membrane, but no leakage below.