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Bricklaying & Repointing

Fix diagonal cracks above windows & doors

Anonymous user 09/03/2024 - 3.31 PM

Hi, we recently had a survey done on our house and it uncovered some small hairline (<1mm) diagonal cracks above some windows and doors. It is only above the doors / windows where the lintel is split in to 3 (decorative) parts. Surveyor believed this wasn’t subsidence. The recommendation was to fix using a helibar repair or to completely replace the lintel with one solid lintel. Just wondered whether this was a typical resolution to hairline cracks in the mortar, and whether this was a standard job, or you need an approved helibar installer to carry this out. Thanks

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4 Answers

Anonymous user

Hi It’s good that you have employed a Surveyor as this has identified that no costly subsidence has occurred . The cracks appear to be minor and perhaps caused by the different materials affected by thermal movement . I would say get a competent builder to install some helibars in accordance with the manufactures instructions and point up the affected areas with mortar being a best match to the existing . Hope this helps Mike

Answered5 November 2022

Anonymous user

Yes 6 mm Hellibars ,no more than 450mm apart ,would be the way to go, cracks that develop above doors and windows are not uncommon so no need to panic.

Answered6 November 2022

Horwood Brickwork

Rating: 5 out of 5

Norwich

I think this is quite normal hair line cracks can appear anywhere i would fill with painters filler easy sand and paint is the crack getting bigger ? If not don’t worry about it

Answered7 November 2022

Anonymous user

I would like to see a picture of your lintel and the cracks in the mortar joints but I don’t feel there is any need for putting bars in you may need to put a new lintel in but don’t worry about the cracks

Answered13 November 2022