[RE-wrenches] anchoring racks to concrete roof

[jay peltz]

Hi Guys,

This mount install is not on a flat roof, well a few hundred sq feet  
are, but mostly on some tilt.
Also they do get hurricanes there, so not sure how well the ballasted  
work in that high of wind.

As to the construction, not of my choice anyway.  I've never see in  
here in the US but in MX or Baja at least its common.
Quicker than standard blocks and lots of insulation in the middle.

So I think I really looking at in concrete anchors, and am leaning  
towards epoxy style.

Thanks,

jay
On Feb 11, 2009, at 6:11 AM, Karl Schwingel wrote:

> Hi Jay,
>
> not having any experience with these roofs (what a weird way to  
> build a roof) if you're doing a flat or near flat mount, I'd look at  
> the currrent issue of Solar professional magazine.  lots on flat  
> roof mounts.
> Ballasted is probably going to be your best bet.
>
> if a high tilt (hot water system? )  I'd recommend either core  
> drilling thru the concrete/foam sandwich and bolting a pipe leg to  
> the bar truss underneath.   then have a roofer (roofer of record if  
> you can find them) or a roofer with experience with that roofing  
> system flash the pipe legs.
> I'm mostly hot water, and so deal with higher tilts and wind loads  
> than most of you lucky PV guys.
>
> Karl
>
>