What materials can be used below pavers in a garden area?

Question

I am wondering if it would be okay to use coal ashes above the tamped earth and below the sand layer. There are a lot of coal ashes underneath an old sidewalk I am removing, so they were used for that before. Are ashes just as good as the subbase material you buy in a home center?

Answer 1

gravel, sand and landscape fabric work well and none inhibit plant growth beside them nore help plant growth in them, and they all alow for good drainage and adequate compaction.

Answer 2

It depends on what kind of pavers they are.

I highly suggest travertine pavers. Definitely use gravel and sand if they are travertine pavers. They are very easy to install. You can also lay them on concrete with some sand.

Check the installation diagram and materials at the web site below:

Answer 3

I only use a weed blocker, and paving sand