rendering retaining wall

[matt73]

just built 3ft high wall that will be used as a planter. i have built in weep holes and drainage will not be a problem. built from concrete blocks. i need to know what type of render mix to use. it will have to be painted afterwards. what type of paint. i am panicing thinking it may get damp and fall off. plus would putting a polythene membrane behind wall (between wall and soil)help stop damp penetrating wall.

 

[nstreet]

See here http://www.pavingexpert.com/featur03.htm

 

[matt73]

have looked at site but does not really explain about rendering retaining wall and ideal mix and best way to avoid damp...

 

[nstreet]

The best way to avoid damp is to have a membrane and proper drainage behind the wall, this is shown in the diagram. If the wall has a moisture barrier then you're not going to get damp problems, so rendering shouldn't be an issue.

 

[matt73]

thanks... i was going to put thick polythene behind wall unless you would advise otherwise and recommend another membrane type...

i will use a mix of 3 sharp sand - 1 cement - 1 hydrated lime for the scratch coat and 5-1-1 for the top coat. its going to be on a curved wall i've built. i've done a little plasterin before but will probably be better with a rough or patterned finish to hide any imperfections.

could you advise how to get different finishes or recomend good site..

thanks matt (heating engineer)

 

[chanel]

thanks... i was going to put thick polythene behind wall unless you would advise otherwise and recommend another membrane type...

i will use a mix of 3 sharp sand - 1 cement - 1 hydrated lime for the scratch coat and 5-1-1 for the top coat. its going to be on a curved wall i've built. i've done a little plasterin before but will probably be better with a rough or patterned finish to hide any imperfections.

could you advise how to get different finishes or recomend good site..

thanks matt (heating engineer)

hi matt, did you have any luck in rendering your wall, cause at present i am going through the same scenario......

could you give me some tips please!!!!!

thanks

chanel

 

[countygardens]

Coor, your very brave, asking about rendering on here!!

 

[bluegolfmonkey]

I am also about to tackle a similar project Matt and need the same questions answered.

Did you use the render mix you were planning? If so, was it effective?

Any tips would be greatly appreciated

Alex