Cracks are common in both traditional and modern properties, but they do not all mean the same thing. Some are limited to render or plaster; others follow masonry joints, building movement or structural elements. The repair should match the cause and the material that has failed.
Cracks we commonly encounter
- Hairline and wider cracks in exterior render
- Cracks around doors, windows and openings
- Parapet and roof-edge cracking
- Masonry cracks and localised separation
- Cracking at junctions between different materials
- Concrete cracking and damaged localised elements
- Recurring cracks previously filled and repainted
Cosmetic crack or movement?
The width, direction, location and recurrence of a crack all matter. A fine finish crack can often be repaired locally, while stepped masonry cracking, displacement, repeated reopening or cracking through structural elements may justify further investigation before cosmetic repair.
MBR does not treat every crack as a structural emergency, and we do not hide uncertain movement behind filler. Where engineering input is appropriate, we can coordinate with a structural engineer before undertaking the repair.
Why crack repairs often reappear
Simply filling the visible line can fail if the substrate remains loose, the materials on either side move differently, water is entering the crack or the original render was poorly bonded. Durable work may require opening the crack, removing unsound material, repairing the substrate and using a compatible reinforcement or repair system before refinishing.
Exterior façades and parapets
Cracks on façades and roof parapets deserve particular attention because they can also become water-entry points. A crack-repair programme may therefore need to include local waterproofing, render replacement or repairs to coping and junction details.
Structural corrective work
Where a defect involves damaged reinforced concrete, masonry instability or significant building movement, the repair scope should follow an appropriate technical assessment. MBR can carry out the building works and coordinate the necessary specialist input rather than treating the issue as ordinary decoration.
If cracks are associated with water ingress, see our waterproofing and leak repair service. For broader post-purchase corrective works, see general property repairs and maintenance.
Frequently asked questions
Can you tell from a photo whether a crack is structural?
A photo can help us triage the issue, but it is not enough to confirm structural significance. Location, width, displacement, surrounding construction and evidence of movement need to be considered on site.
Do all cracks need to be repaired?
Not necessarily. Some fine cracks are primarily cosmetic. Cracks that admit water, are widening, repeatedly reappear or affect masonry and structural elements deserve more attention.
Can you repair and repaint the whole façade?
Yes. Where local repairs would leave an inconsistent finish, we can include broader render and painting work in the quote.