Rebuilding a small wall

[jackflashh]

I’ve a small dwarf type wall at the end of my garden, backing onto a tarmac type pavement. It is mostly made up of sandstone sections and rubble, with a capping section on top. The capping section is in poor condition in many places, and the sandstone is bulging in places, so I intend to replace it.

My plan is to remove the wall but leave the foundation in place.

Then to rebuild the wall with concrete blocks and coping on top. I thought I would use the blocks on their side, so it would be around 215mm wide, and 3 courses high, coming in at just over 300mm high, plus coping. I then plan to paint it.

Having limited knowledge of building techniques and materials, I have some of questions.

Would the blocks on the ground suffer badly from frost over a few years? Is there a specific type of block that is better for this?

Would the paint be damaged by rising damp on the wall, and have a limited life? Should I put in a membrane to limit this?

Would I reseal the wall to the pavement with some type of bituminous type poured material? Any suggestions to a product for this?

Any help would be much appreciated

 

[Scarlet Pimpernel]

I’ve a small dwarf type wall at the end of my garden, backing onto a tarmac type pavement. It is mostly made up of sandstone sections and rubble, with a capping section on top. The capping section is in poor condition in many places, and the sandstone is bulging in places, so I intend to replace it.

My plan is to remove the wall but leave the foundation in place.

Then to rebuild the wall with concrete blocks and coping on top. I thought I would use the blocks on their side, so it would be around 215mm wide, and 3 courses high, coming in at just over 300mm high, plus coping. I then plan to paint it.

You can get 'paint finish' blocks. They're smoother finish and accept paint better. Otherwise blocks are quite rough to accept paint finish.

Would the blocks on the ground suffer badly from frost over a few years? Is there a specific type of block that is better for this?

Solids, as they won't show the hollows when blocks are laid on their sides.

Would the paint be damaged by rising damp on the wall, and have a limited life? Should I put in a membrane to limit this?

No membrane needed, use stone paint. The paint will have a limited life, as it's exposed to the elements from below, on top and the face.
A membrane for just two courses might have the tendency to slip.

Would I reseal the wall to the pavement with some type of bituminous type poured material? Any suggestions to a product for this?

Not needed.

 

[jackflashh]

Thanks Bobby, much appreciated