[Greenbuilding] Green roof drainage question

[JOHN SALMEN]

Hi Marilyn

 

Depends how long the wall is against the roof - if you can get it ready
(pull all the material back from the roof membrane, take off whatever
siding, trim, etc, remove the door, and clean everything well). Probably
need a carpenter or (handyperson) to tear out the sill and whatever is
damaged and replace it (should be max a day - 5-800). If you can get a
roofer or someone experienced with access to the right materials that work
should be 1-1500.   

 

That would be my guess as to what it would cost me out here (but my crew is
experienced with membranes and waterproofing details) - you should have more
access to the right skills in Toronto but really depends on how lucky you
are to find the right person. Problem with that type of work is you just
can't get a carpenter type person that is not experienced with it - as they
could putter at it for a week with numerous trips to home despot and do it
wrong in the end at triple what it should cost.  These materials are easy
and fast to use when someone is experienced (and require speed) but a mess
if not - and the proper materials are a specialty supply.

 

 

From: Marilyn [mailto:cybercrone at eol.ca] 
Sent: July-23-11 11:13 AM
To: 'Green Building'; JOHN SALMEN
Subject: RE: [Greenbuilding] Green roof drainage question

 

WOW, John, thanks!!  That's wonderful. 

 

I won't be able to increase the step up, as it's already a short door and
anymore and it will be a window. (again) 

 

Any ballpark on what that would/should cost, so I can start saving? 

 

Thanks again, 

~m 

 

 

-------------- Original message --------------- 

Hi Marilyn 

  

Funny to talking about snow in the middle of you heat wave. 

  

Sounds like the issue is not just the weather (or weather maintenance i.e.
snowshoveling) but some failure around the door and roof membrane. 

  

The code allows for a 2" separation between a deck and a door which is
pretty minimal. (a deck is classed as a roof in this case). I've had to try
and reduce that distance further for accessibility issues but if not it is
nice to increase it. 

  

For it to have a hope in hell of working there needs to be a good membrane
connection of the roof up and over over the plate under the door sill and
the plate itself needs to have a slope (I usually specify plastic lumber
sill with the top planed to a bevel). The membrane over the sill also needs
to extend up the door jamb forming a continuous waterproof seal. The roof
membrane also n 

 

Cybercrone 

http://www.eol.ca/~cybercrone 

Hm-m-m-m . . . 

^I have never seen a wreck and have never been wrecked, nor have I 

been in any situation that threatened to end in a disaster of any 

sort.^ 

 --Captain of the Titanic. 

 

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