Frost damaged bricks

A whole course of bricks below damp proof is showing signs of frost damage with the facing broken off. Is the strenghth of the bricks endangered and what is best course of remedy?

Asked by Frank on 17th Mar 2025
Expert Trade Answers
"Sounds like the bricks have blown over a period off time through water ingress and damp they need chopping out and replacing"
Answered on 17th Mar 2025 - Member since Dec 2023 - report
"Yes the strength has been compromised. Over time the moisture expanding and contracting in the bricks would have caused this. Only way to correct this is by replacing the bricks."
Answered on 17th Mar 2025 - Member since Jul 2016 - report
"The best remedy is to cut out the damaged bricks and replace them"
Answered on 17th Mar 2025 - Member since Aug 2023 - report
"Without seeing the actual damage. I can only base my answer on my experience.
Most bricks are porous meaning over a long period of time they soak up water.
During the winter the cold causes the water to freeze. Ice expands, this causes the bricks to become brittle and the face surface of bricks flake off. Known as blown. This offence happens where the water has built up in specific area. Like below DPC or tops of walls.
To remedy I would suggest removing the damaged bricks and replace with new ones. Once dried treat with a water repellent sealer.

I trust this answers your question.
Regards Robert"
Answered on 17th Mar 2025 - Member since Feb 2025 - report
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