This is my first post so hello to everyone. 
The boys forgot to install drainage holes in the retaining wall they built along two sides of our garden. The wall is made from brieze block, a cavity, then concrete blocks made to look like reconstituted stone. There is rubble filled behind the wall topped with soil.
Is it possible for me to now retro fit some drainage holes and how do I go about it please.
The obvious thing to me would be to drill holes and fit plastic pipe in them. Is this right or is there a better way? If so what tools (drill type and bit) should I use, what size of hole do I need, and how many. What type and size of pipe or other hole liner do I need. How do I actually drill the holes (ie without breaking up the blocks), and is there anything else to bear in mind?
Quite a list of questions I know but I thought it was best to try getting everything in one go!
Any help very much appreciated.
The boys forgot to install drainage holes in the retaining wall they built along two sides of our garden. The wall is made from brieze block, a cavity, then concrete blocks made to look like reconstituted stone. There is rubble filled behind the wall topped with soil.
Is it possible for me to now retro fit some drainage holes and how do I go about it please.
The obvious thing to me would be to drill holes and fit plastic pipe in them. Is this right or is there a better way? If so what tools (drill type and bit) should I use, what size of hole do I need, and how many. What type and size of pipe or other hole liner do I need. How do I actually drill the holes (ie without breaking up the blocks), and is there anything else to bear in mind?
Quite a list of questions I know but I thought it was best to try getting everything in one go!
Any help very much appreciated.
