Damp & Mould Treatment · North West London
Damp and mould treatment in North West London
The cause gets fixed first, then the wall is repaired and redecorated, so the mould does not come straight back.
- Checkatrade verified since 2022
- Free estimate, no obligation
- Sole trader: Mohamad does the work himself
MS Renovation & Maintenance treats black mould and damp across North West London. Mohamad Sawwan works out whether it is condensation, a leak or something structural, deals with that cause, then replasters and repaints with anti-mould finishes. Real before and after photos of bedroom, en-suite and reception room jobs are below, and the estimate is free.
What our damp and mould treatment covers
- Black mould removal and treatment. Walls, ceilings and the areas around windows where mould tends to establish itself.
- Damp diagnosis and repair. The first real step on most jobs: working out whether the damp is coming from condensation, a leak, or something structural, since the treatment is different for each.
- Condensation and ventilation fixes. Addressing the ongoing cause in bathrooms and bedrooms with poor airflow, which is what stops mould coming straight back after redecorating.
- Replastering and redecorating. Once the cause is dealt with, repairing the wall or ceiling itself, then repainting with anti-mould finishes.
Why mould comes back, and how to stop it
Black mould and damp keep coming back when only the surface gets treated. Mohamad Sawwan deals with the cause first, whether that is a leak, condensation or a ventilation problem, and only redecorates once the underlying issue is actually fixed, not just painted over.
The reason mould keeps coming back on so many jobs elsewhere is that only the black staining gets cleaned off and repainted over, while the moisture behind it is left exactly as it was. It reappears within months because the actual cause was never dealt with. Diagnosing that cause is what the treatment starts with, not an afterthought once the wall has already been repainted.
Jobs we have done
Three real examples of this work. Black mould had spread across a whole wall under a bedroom bay window: it was treated at the source, replastered where it had blown, repainted, and finished with a new oak-effect floor. Condensation mould had covered an en-suite ceiling above a shower, treated, sealed and repainted, with the ventilation problem behind it dealt with so it does not return. And in Harlesden, visible damp damage to a reception room was dried out, treated and redecorated.
Estimates and guarantee
You get a free estimate first. Qualifying renovation and improvement work is covered by Checkatrade's £1,000 guarantee. Mohamad is Checkatrade verified since 2022.
Real jobs, before and after
Photos from jobs Mohamad has done. Open one to see the whole project.
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Before 
After Mould Removal & Redecoration — Bedroom
North London
Black mould across a whole bay-window wall, treated at the cause, replastered, repainted and finished with a new oak-effect floor.
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Before 
After Mould Treatment — En-Suite Ceiling
North London
Condensation mould across an en-suite ceiling, treated, sealed and repainted, with the ventilation cause dealt with.
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Before 
After Damp Repair & Redecoration — Harlesden NW10
Harlesden NW10
Visible damp damage to a reception room, cleaned and repainted.
Common questions about damp and mould treatment
Will the mould just come back after you repaint?
Not if the cause is dealt with first. Mohamad diagnoses whether it is condensation, a leak, or something structural, fixes that, then replasters and repaints, which is why the treatment holds.
Do you treat condensation mould in bathrooms differently to a damp bedroom wall?
Yes. Condensation and ventilation fixes suit a bathroom or poorly ventilated bedroom, where poor airflow is usually the real cause. A damp wall can have a different source, so it is diagnosed on its own before deciding on treatment.
Can you redecorate straight after treating the mould?
Yes. Replastering and making good, followed by repainting with anti-mould finishes, is the last stage once the underlying cause has been fixed.
How do I know if it is damp or just condensation?
Send a photo and describe when it appears, since condensation and rising or penetrating damp look different and need different fixes. Working out which it is comes before any treatment.
Areas we cover
We do damp and mould treatment across North West London. Pick your town to see the jobs we have done near you.
- Harlesden NW10 Damp repair and redecoration
- Edgware HA8
- Golders Green NW11
- Willesden NW10
- Pinner HA5
- Finchley N3
- Tottenham N17
We also cover Wembley, Colindale, Kilburn and Enfield. See all areas we cover.
Other services
- Painting & Decorating Interior and exterior painting, wallpapering and timber restoration.
- Bathrooms Full refits, showers, wet rooms and tiling.
- Plumbing Leaks, taps, toilets, radiators and plumbing for new bathrooms.
- Maintenance & Repairs Doors, locks, leaks and the odd jobs around a house.
Get a free estimate for your damp and mould treatment
Call, message on WhatsApp, or send a few details. Mohamad Sawwan quotes the job himself, with no obligation to book.