[RE-wrenches] SDHW collector covers

[Ken Schaal]

I'll second that suggestion---  greenhouse shade cloth is cheaper, and lasts 
as long.  shading coefficient used depends on how much solar gain reduction 
you need. For my office radiant floor collectors-- ground mount, recycled 
Reynolds aluminum, anti-freeze --- I cover completely with white, 
reinforced, 6 mil, UV inhibited polyethylene vapor barrier. Online source 
would be Tek Supply.

Some hardware stores stock Pheifer. Farm supply/ greenhouse supply outfits 
would also be a good source for both. Be sure poly is UV protected.

This issue is just another reason to use a DrainBack system when possible.

Ken Schaal
CommonWealth Solar
Ashland Va.

----- Original Message ----- 
From: "William Dorsett" <wmdorsett at sbcglobal.net>
To: <allsolar at scswifi.net>; "'RE-wrenches'" 
<re-wrenches at lists.re-wrenches.org>
Sent: Thursday, October 25, 2012 11:50 PM
Subject: Re: [RE-wrenches] SDHW collector covers


> Jeremy, we used use a screen fabric called Phifer Glass shade screen
> (http://www.phifer.com/ExtSunControl.aspx#) which comes in 4' rolls and in
> different levels of shading. For vertical collectors we anchored it along
> the top of the collector and used awning type pulleys to roll it up on a
> bottom rail of 2" PVC pipe filled with sand to give it weight and glued 
> pipe
> caps on the ends. We drilled holes in the caps for eye-bolts to tie them
> down so they wouldn't flap in the wind. They worked very well for many
> years.
>
> Bill Dorsett
> Sunwrights
> Manhattan, KS
>
> -----Original Message-----
> From: re-wrenches-bounces at lists.re-wrenches.org
> [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Jeremy
> Rodriguez- All Solar Inc.
> Sent: Thursday, October 25, 2012 9:21 PM
> To: re-wrenches at lists.re-wrenches.org
> Subject: [RE-wrenches] SDHW collector covers
>
> Anyone have a good product besides plywood for a collector cover?  4x8 ft.
> Thx!
>
> Jeremy Rodriguez
> All Solar
> Colorado, USA
> Sent via BlackBerry. Sorry for typos and shorthand!
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