Can the rocks be drilled or cut for ventilation or access?
Absolutely! If the item you want to cover needs air circulation to prevent heat build-up, you can drill 1/2″ holes (with drill bits designed for woodwork) in the walls of opposing sides of the rock to allow cross-ventilation. Note: Heat generated by a pump or motor being concealed by one of our fake cover rocks will not effect the boulder . Since polyurethane is a thermoset plastic, it won’t melt and flow when exposed to high temperatures. If cutting small holes in the rocks with a saw, you should use a blade with fine teeth only (!) for the sharpest cuts and best results.
