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Restoration & Refurbishment Question
Replacing upvc windows with wooden sash windows in a victorian property.
The previous owner has UPVC windows installed to our 1890s Victorian house, I am looking to return them to wooden sash windows with new sash boxes, the lot. We have had a potential quote, however they have stated they will use a standard mortar between the sash box and brick; the rest of our house is done in a lime based mortar, is using a standard mortar around the sash boxes detrimental to the breath-ability of the house? We have solid brick walls; no cavity, should I be asking for the job to be completed with a lime based mortar? Not entirely sure how sash boxes sit on the bricks...
Yes I would insist they use N.H.L.lime mortar,not hydrated lime in a cement mix
Lime mortar would be more beneficial,to both the breathability of the house and the wooden sash,
N.H.L mortar does not contain cement or any addatives
unfortunally in todays world it might be a tad harder to find someone able to use lime mortar correctly.
Good luck alex
Answered 5th May 2017