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Why should you remove mould covered silicone? -

Removing Mould

Why should you remove mould covered silicone?

Why should you remove mould covered silicone?


You may know but silicone is used in all rooms of new build properties.


New build homes in recent years have pushed for more silicone sealing, unlike homes many years ago. This is to ensure homes are more heating efficient, to prevent leakages and making a space look more complete, joining substrates together seamlessly.

Whether it be between flooring and skirting boards ensuring no heat escapes the room, around window frames both internally and externally blocking out the winter freeze from invading and most noticeably you will see silicone used in your bathrooms, en-suites, cloakrooms and all sanitary areas.


You may notice a black mould growing on the silicone within your house?

What is causing this unsightly growth?

And how do you get rid of it?


Our main focus is on mouldy rotten silicone around your baths, showers, toilets and other areas.


Diving into the reasons why this mould grows; why this can be hazardous to you and your home; how to repair and ensure no more mould growth on the silicone within your home.


Whilst we hope we cover everything, there may be specific questions left unanswered. If this is the case, contact us at and we will offer our experience on dealing with your issue directly.


There are thousands of different mould strains, to tell you to look out for just one would be irresponsible as there may be many present at once.


Most mould spores are harmlessly floating in the air, searching for a place to land and spread. Most of the time they are never given the habitat to grow. Mould feeds on areas that are damp and high volumes of moisture.


While not all moulds types are cause for concern, they should be dealt with promptly to minimise spreading, possible damage and other negative effects.


Removing Mould


Firstly, why does mould appear on silicone?


Mould growth can be caused from high humidity caused from either a shower or bath, can be from a lack of ventilation, pools of stagnant water left after a shower or bath and a clear lack of cleaning using bleach products.


Why is silicone used within bathrooms and sanitary areas?


To prevent mould growth by consisting of an anti-fungal compound, which fights back against mould growth caused in areas of high humidity and water concentration.


To prevent cold air seeping into rooms through a window or door, by sealing around frames and skirting boards.


To prevent water leakage through gaps between utilities and walls.


For an overall good-looking finish. You may notice a bathroom without silicone seem somewhat incomplete gaps between tiles and utilities, or large showings of grout down tiled angles.


What hazards can mould growth on silicone cause?


Other than looking unsightly, some moulds have more direct hazards to you and your home.

Moulds produce allergens’, so individuals who are sensitive may experience ‘Hay Fever’ like allergic reactions and asthma attacks. Other side effects can include headaches, dizziness, nausea and skin rashes. Note, these effects are just from strains considered to be non-toxic.


The toxic variety, such as Stachybotrys Chartarum, also known as ‘Black Mould’ can be quite dangerous. Effects to your body may be, chronic coughing and sneezing, irritation to the eyes, mucus membranes of the nose and throat, rashes, chronic fatigue and persistent headaches can all be symptomatic of black mould exposure or black mould poisoning. In particularly severe cases of prolonged exposure, black mould health effects can be more dangerous.To your home, this mould if left untreated can cause homeowner to move out either temporally or permanently, with structures in such ill condition the only cure to tear them down.


Don’t threat however, as most moulds are black in colour and may not be the toxic variety Black Mould. Knowing this, all moulds should be dealt with quickly to ensure they are not this toxic mould.


How do I remove the mould from my silicone?


Mould around silicones must be cut out fully, as mould may still be present without showing any visual signs and replaced with in date working sanitary rates silicone.


This procedure is quick to perform by a trained applicator and recommended as to get a real clean cut and removal without scratching or harming the original surface, is far tougher than one would believe.


Ensuring mould grows no more!


To ensure mould does not appear after replacement. Ensure the room is well ventilated, sucking out the humid air, that mould thrives on. Leave no pools of stagnant water, clear away after usage of any water outsource and clean thoroughly and regularly using bleach/mould killing products, leaving the silicone dry after use.


We must stress, you must ensure rooms are well ventilated, removing all lingering moisture and refusing to allow mould its feed to settle and spread.



Looking for an applicator to cut out and reseal your old mouldy silicone?

Direct Sealants are pleased to announce a special team of operatives to carry out the removal and replacement of sealant/mastic for domestic customers.

• Award Winning Established Company
• All Works Guaranteed for 12 Months
• High Quality Sealants Used
• Fully Qualified and Vetted Operatives

Our Services
• Removal and Reinstallation of Mould Covered Silicone (See Image for an Example)
• Sealant to Renovated Bathrooms, Kitchens, Cloakrooms.
• Sealant to Perimeter Edge of Skirting Boards and Floor Coverings

Call or email now for a free quotation!

01268 728444



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