Mould-resistant resealing in North London & the Home Counties
Mould-resistant resealing means persistent black mould removed in full, then anti-microbial sealant applied and finished clean. For joints that keep going black no matter how often they're cleaned.
What the job includes
Before
After- Full removal of mouldy sealant, including growth beneath the surface
- Substrate treated before any new sealant is applied
- Anti-microbial silicone used throughout
- Bathrooms, kitchens and wet rooms all covered
- Ventilation issues flagged where they're contributing to regrowth
- Work area left clean and dry, ready to use
How the work runs
Assess
We check how far the mould has spread beneath the surface before pricing.
Strip out
Mouldy sealant removed in full, including any growth on the substrate.
Treat
Substrate treated so mould doesn't take hold under the new joint.
Apply & finish
Anti-microbial silicone applied and tooled to a clean line.
Work in this trade
Mould-resistant resealing FAQs
I clean the sealant regularly but the mould keeps coming back — why?
Surface cleaning only removes what's visible. Mould usually takes hold underneath or within the sealant itself, over a joint applied on a damp or unprepared surface — it has to be stripped out, not just cleaned.
Will anti-microbial sealant stop mould coming back for good?
It significantly extends the time before mould returns, but no sealant is permanent — good ventilation in the room matters just as much as the product used.
Do you treat the wall or tile behind the sealant as well?
Yes — where mould has spread to the substrate we treat it before resealing, rather than sealing over a contaminated surface.
How is this different from a normal reseal?
The removal and preparation stage is more thorough, and we use an anti-microbial silicone rather than a standard product, specifically to resist mould regrowth.
Get a price for your reseal
Send a couple of photos and rough measurements and we'll quote from those. Or call 07413 240639.