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Crumbling Sandstone bricks and mortar in loft at chimney
Anonymous user 28/02/2024 - 3.57 PM
We live in an Victorian semi detached house and in the loft at the chimney there is an area of sandstone brickwork where the facing of these bricks and mortar are crumbling. We spotted a leak recently to which the lead flashing is due to get repaired/replaced this week however, I am unsure of what is required for this crumbling brickwork issue? Hopefully by getting flashing replaced the damp shouldn’t be an issue anymore but will we need these bricks re-pointed? Thanks
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3 Answers
Brayfield Construction & Interiors Ltd
Rating: 4.8 out of 5
Hi,
It would be best practice to get a good quality bricklayer to chop out and replace any damaged bricks and re-point the stack where necessary. This would ensure the chimney stack is structurally sound and reduce risks of smoke leakage etc within the loft area - assuming its a working fireplace ?
Answered8 February 2021
15
Anonymous user
No the best way to solve a continuous decrying is to render it completely will protect it for around 15 years
Answered8 February 2021
1
GKMC Building Services
Rating: 5 out of 5
You should get a bricklayer who is experienced in lime mortars, the bricks that are damaged should be replaced with a like for like brick, all mortar should be mixed at a ratio of 1.25 building sand 1.25 sharp sand 1 part 3.5 hydraulic lime. We specialise in lime mortars. If you were to go down the root of rendering the stack, please ensure you use a lime based render. For more information on lime work visit the London diocese lime mortars website.
Hope this helps you out
Answered25 February 2021
0