Would it be prudent to use hydraulic lime pointing?

[michael]

My home is about 750 meters back from the sea and although it is fairly well shielded by neighbouring properties, one particular corner is a little exposed in that it catches any weather that comes whistling up the adjacent street. This street runs straight down to the sea so any rain/wind that blows up it is no doubt salt ridden. Likewise this corner also catches the sun from early morning well into the afternoon. This exposed corner of the property is brick and lime mortar (1817) and the lime pointing is always being weathered away. I know it’s usually frowned upon on this forum but would it be prudent in this particular instance to re point the affected corner with a hydraulic lime mortar?

P.S. I’m only talking South coast of England here not Outer Hebrides

 

[skier-hughes]

Although frowned upon by some, I was originally given the advice that I should have my lime mortar tested to find out what it is, adn in doing so the company came back and told me that it was hydraulic and was closest to NHL3.5.

 

[Jon Maine]

hydraulic is probably the thing to use where you are for many reasons, I agree 3.5 will be right.

 

[Gervase]

NHL 3.5 Hydraulic certainly. It's ideal for exposed windward locations, particularly near the sea. The Scottish harl coats are done with NHL 5 lime, which would probably have the putty purists squeaking, but it's the best stuff for the job.
If your bricks or stonework are very soft, you could try a more feebly hydraulic lime - an NHL2 or even a 1 - but it will be harder to source locally.