Posted: 05/10/2014 at 11:48
I have a mortar free retaining wall but it's made from bottles, not bricks. It's been there 18 years and never moved but the bed behind is plants, not lawn so isn't walked on every day or mowed every week but it is at seating height so does get sat on.
We gave it proper foundations with a concrete filled base and then simply laid the bottles. There's a paving set wall at either end to hold them up but nothing between them. We topped it the long side with slabs of marble from an old fireplace we demolished and the short bit has a railway sleeper top.
The tall, straight side bottes with high shoulders are best for ease of use.