I agree with Chuck.
If it's on a membrane, then you most assuredly do not want to damage
it. Some are more sensitive than others, so depending on the vintage, I
might even put a pad between the non-pen and the membrane. Then put on
your weights, then sprinkle the removed rock around the whole thing.
bp
<part15sbs{at}gmail{dot}com>
On 1/29/2015 12:49 PM, Chuck McCown wrote:
Assuming river rock on a membrane. Personally, I would clear the
rock, make sure it is sitting on the membrane with nothing sharp or
pokey that can damage the membrane, add the weights then put the river
rock back to provide sun protection.
-----Original Message----- From: Nate Burke
Sent: Thursday, January 29, 2015 1:39 PM
To: Animal Farm
Subject: [AFMUG] Nonpen on River Rock Roof
Thoughts on pros/cons. When putting a Non-Pen on a roof with river
rock, (if that's what it's called, 1/2"-1" diameter stones, no tar) do
you clear the rock and put the non-pen mats directly on the roof, or put
the mats and non-pen on top of the rock?
