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- CommentAuthorspoonandfork
- CommentTimeSep 14th 2012
when is it too late in the year to repoint with lime putty? Has anyone seen their mortar fail due to weather? -
- CommentAuthortony
- CommentTimeSep 14th 2012
no
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- CommentAuthortony
- CommentTimeSep 14th 2012
May be when it was too hot! -
- CommentAuthorspoonandfork
- CommentTimeSep 14th 2012
good to hear!
bit confused about protecting it.
eg http://www.stastier.co.uk/nhl/guides/protection.htm
tarps / hessian to protect against wind and sun. Should you keep it damp though? The above guide says it if it's too damp / humid it won't go off (this is for NHL though, not putty).
I've yet to see any repointing work covered up with hessian or similar -
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CommentAuthorDominic Cooney
- CommentTimeSep 14th 2012
I would go with the hessian - depends on the weather though, may not be necessary at the moment. Too sunny or windy seems to be more of a problem than drizzle or mist. Heavy rain is a problem for a day or two.
We damped down a lot in hot weather to try and slow down the drying. -
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- CommentAuthorfinny
- CommentTimeSep 15th 2012
I know it's only September but I would be thinking of frost now..
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CommentAuthorDominic Cooney
- CommentTimeSep 15th 2012
Posted By: spoonandforkit if it's too damp / humid it won't go off (this is for NHL though, not putty)
I would have thought it was the other way round - NHL will go off in the bag in a damp/humid environment whereas putty will not go off kept in the tub under a layer of water.
In theory you could keep pointing done with lime putty damp long enough for it never to go off.
I mix up lime mortar with putty and keep it in sealed tubs for ages, I think it will keep indefinitely like this. I have used it after a year or more. -
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- CommentAuthorNick Parsons
- CommentTimeSep 16th 2012
I had frost problems last year. I pointed a good 3-4 weeks before 1st frost with a 3:1 grit-sand/NHL5 mix on (horizontal) york-stone slabs, and much of it 'blew'. Also some 3:1 with NHL 3.5 on (vertical) brickwork.
Nick
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