Is a dark lintel stain from water or internal sweating?
I have a very dark stain above my window on the lintel plaster, it doesn't feel damp. I painted it but the dark brown stain came back. I also noticed a stain on a lintel above my bi-fold doors. Is it water coming in through the rendering and settling on the steel lintel, or is it sweating inside, or something else. Thanks
2 Answers
Charwill Civils Ltd
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Most of the time its the Lintels that are wet somewhere or common fault is that there is not enough air flow nearby to clear the moisture or that there is actually a leak from above.
This could be vents blocked or damp trays installed wrong.
This could be vents blocked or damp trays installed wrong.
19th Sep 2024
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Blb brickwork
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It is coming from the rain, cause the wall gets wet and probably they dont have Dpc on Top of the steel lintel mate
2nd Oct 2024
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