Retaining wall question/advice needed

[extrememonkey]

Hey people, I want to build a raised bed out of sleepers against my garage wall. I only want to build three sides out of the sleepers and butt this up against the actual garage brick wall which would make the fourth side.

Now, I know this isn't the best way of doing things, but I have my reasons. The main issue is obviously moisture, especially as I will be going way above the Dpc.

Now I was thinking that I could run a batton along the brick wall which would hold enough DPM in place to cover and protect the brickwork - now to my question, would this be enough protection so as to not cause moisture damage in the long run????


Thanks in advance

Martin

 

[extrememonkey]

Anyone have any thoughts on this???

 

[Static]

How high do you intend to make the raised bed?
Normally a liquid dpm is enough, something like three coats of synthaprufe.. making sure you allow for a splash zone above the top of the bed..

 

[extrememonkey]

At its highest point it will be about 500mm above the dpc of the garage wall... I was thinking of using a DPM sheet battoned to the wall, which would allow the wall to breath and then liqued DPM the wall above this to cover for a splash zone....

 

[r896neo]

The DPM sheet will work just as well and is a lot cheaper.

 

[extrememonkey]

The DPM sheet will work just as well and is a lot cheaper.

That was my exact thinking