Frost proofing - Garden wall frost proofing

[mickallen]

Hi All

I have just finished off a garden wall, I have capped the wall with a bricks set on thier side.

I have just read that care should be taken doing this as the top bricks are liable to frost damage and that a frost resistent brick should be used. I have checked and the bricks I have used are an 'M' classification so are moderatly frost resistant.

Is this something I should be concerned about? Is it possible to treat the top brick with a frost proofing chemical?

Thanks in advance

[ladysmantle]

Yeah, I think they should have been an F classification, or even engineering bricks, but I am no expert. Further, did you put a dpc beneath the capping to stop the downward ingress of water into your wall?? Consider putting another cap on top of your M bricks, a proper coping with a drip groove, and a flexible dpc layer in between the M bricks and the coping.

But wait for a more experienced opinion than mine before doing anything...

[lutonlagerlout]

did you put a dpc beneath the capping to stop the downward ingress of water into your wall??

TBH i dont agree with dpcs in freestanding walls,i normally do a double tile creasing with a stock or engineering brick on its side
one of the main problems with walls getting wet is the moisture cannot evaporate through the mortar because its too hard and then has to evaporate through the brick causing damage
i dont know about Fs and Ms but if you use a soft brick (i.e.any london brick ) on top of a wall you have got about 5 years till the fun starts,NOT
cheers LLL