Frost blown brick

I've noticed that a brick above the external drain has blown. It has got damp and the frost has popped off the front.

Thing is - how do I repair this?

I'm thinking brush on PVA to waterproof and then stick the brick face back on with some external grade building adhesive - something like 'No more nails'.

It would do the job - but is there a better way?

 

Yeah you could chop the face right off and then cut another brick, of the same type, lengthwise and set it in on mortar..
Or you could do what you suggest.

Maybe give that section a coat of something like Thompson's water seal afterwards .

 

I was looking at this:

U-Can Brickwork Repair mortar, 5kg Tub | DIY at B&Q

but it does seem a bit of a faff when I can glue back on the existing brick front.

Waterproofer would be a good idea - might well splash it all over the brick that is close to the drain - to stop this happening again.

 

I'b be inclined to do what you suggested.

Strangely enough I built a small raised bed with paving bricks glued together with Gripfil.
That was 10 yrs ago.

Its still there.

 

You must use genuine Gripfill, none of this silly stuff like Nonails, if it dont smell it wont work.