Landscaping with Lava Rock - Knowledgebase Question

Question by writetwig
August 23, 2008
I have a little court yard with a fountain in the center. I'd like to cover the area around the fountain - about 8' x 8' with lava rock. How much lava rock will I need? Also do you put down a barrier under the rock for weed control?
Thank you.

Answer from NGA
August 23, 2008


You will need to cover 64 sq. feet. One cubic yard typically covers 100 sq. ft., 3 " deep. I'd purchase a yard and spread it slightly thicker than 3". To keep weeds at bay, do put a fabric weed barrier down before spreading your lava rock.

Best wishes with your courtyard!

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