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Old 07-06-2012, 09:24 AM   #24
PaulRyansew

Join Date
Oct 2005
Posts
408
Senior Member
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The smaller the pebbles the better! The heat gets less retained and dissipates faster during the nights cool down.

And let me tell you: This is a one in a time investment that needs NO maintenance or upkeep at all, just using some bleach on the water once in a while will keep them white and free of mold/green stuff, or best weedkiller...

And the best part is that you can do it yourself, with a minor help to place the sacks on the roof...
How thick is your gravel layer Pichardo? If too thick you might have loads issues on your roof, no?

Barnabé
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