Black mould in a shower cubicle is more than just an aesthetic problem. It spreads rapidly in warm, damp environments, can cause persistent odours, and poses genuine health concerns for occupants particularly those with asthma or respiratory sensitivities. If you're dealing with this issue, here's a comprehensive guide on how to get rid of black mould in the shower cubicle effectively, and how to stop it from coming back.
Black mould (most commonly Stachybotrys chartarum or Cladosporium species) thrives in environments with high humidity, poor ventilation, and persistent moisture. A shower cubicle provides the perfect conditions particularly in traditional designs where grout, silicone, and mastic joints trap moisture and provide an organic substrate for mould growth.
The most common places to find it are grout lines between tiles, silicone seals around the tray and panels, corners where water pools, and along the base of shower walls. If you've been cleaning the surface and finding it returns within days, you're not removing the mould, you're removing its visible surface while the roots remain embedded deeper in the material.
Before addressing how to get rid of black mould in the shower cubicle, take appropriate precautions. Black mould releases spores when disturbed, which can irritate the lungs and trigger allergic reactions. Always:
Step 1: Choose An Effective Treatment
A diluted bleach solution (one part bleach to four parts water) is one of the most effective treatments for how to get rid of black mould in the shower cubicle particularly on grout and silicone. Purpose-made mould and mildew removers are also effective and widely available. For those preferring a chemical-free approach, undiluted white vinegar kills a wide range of mould species and is safer to use on softer surfaces.
Step 2: Apply Generously and Allow to Dwell
Apply your chosen solution directly to all affected areas. Don't just wipe let the product dwell on the mould for 10 to 20 minutes to penetrate and kill the growth below the visible surface.
Step 3: Scrub Thoroughly
Use a stiff bristled brush on grout lines and silicone joints. For tiles, glass, and acrylic trays, use a softer cloth or sponge to avoid scratching. Work into corners and edges carefully, as these are where mould is most deeply embedded.
Step 4: Rinse and Dry Completely
Rinse with clean water and dry the area as thoroughly as possible. Use a clean towel on surfaces and run the extractor fan to reduce residual humidity. Any moisture left behind speeds up regrowth.
Step 5: Assess The Damage
After cleaning, inspect the grout and silicone closely. If the mould staining remains deeply embedded or the silicone is soft, discoloured, and degraded, surface treatment is no longer sufficient. The material needs to be removed and replaced, cut out old silicone completely, clean the surface underneath, and apply fresh mould-resistant silicone sealant.
Knowing how to get rid of black mould in a shower cubicle is only part of the solution. Without addressing the underlying conditions, it will return:
If you're regularly dealing with how to get rid of black mould in the shower cubicle despite diligent cleaning, the design of your shower is likely the root cause. Grout and silicone are porous, degradable materials that will always provide a habitat for mould, regardless of how frequently you treat them. The only permanent solution is to eliminate those materials entirely.
Advanced Showers pods have no grout, no mastic, and no silicone seals. The seamless, nonporous GRP surface gives black mould nowhere to establish, embed, or grow. A quick wipe is all that's needed to keep the surface clean. No scrubbing. No mould treatments. No recurring problem. For anyone who is tired of repeatedly addressing how to get rid of black mould in the shower cubicle, upgrading to an Advanced Showers pod is the definitive long-term answer.
Ready to tackle the problem at its root? Get in touch with Advanced Showers for expert advice on our mouldproof shower solutions. Visit our website, request a free brochure, or call us directly to discuss your requirements.