Blog>Questions>How to get rid of black mould stain in sealant of windows?
Last updated: 1 February 2024
How to get rid of black mould stain in sealant of windows?
Black mould on your window sealant is one of the last things you want to see. Not only is it unsightly but it can cause serious health issues too. Here, we’ll show you how to get rid of black mould stains in the sealant of your windows, and how to prevent it in the first place.
Black mould on your window sealant is one of the last things you want to see. Not only is it unsightly but it can cause serious health issues too. Here, we’ll show you how to get rid of black mould stains in the sealant of windows, and how to prevent it in the first place.
How to get rid of black mould stain in the sealant of windows
If black mould has appeared on your window sealant, you can attempt to remove it using washing-up liquid or vinegar (making sure to wear rubber gloves and a mask for protection).
However, the best solution will usually be to remove all the old sealants from both inside and outside the property, before re-sealing them with the correct sealants.
It’s best to also check your window frames while you’re at it, as there may be a leak through the frames that needs addressing.
A professional will be able to complete this job for you, both getting rid of the mould stain in your sealant and preventing it from returning.
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Why do I have black mould in my window sealant?
There are a few different reasons why you might have black mould in your window sealant.
1. Damage to the window frame
Often, black mould in your window sealant is to do with damage to the window frame.
In this case, we would recommend getting in touch with a professional to repair or replace your window depending on the severity of the damage.
2. Windows sealed incorrectly
If black mould has appeared on your window sealant soon after having new windows installed, it may be that your windows have been sealed incorrectly.
They might have been sealed using decorators’ caulk or with silicone that doesn’t contain the necessary anti-fungal agent.
3. Excess condensation
Black mould likes very wet conditions. Although silicone sealant is waterproof, condensation can drip down windows and provide an ideal growing ground for it to thrive.
4. Gaps in your sealant
If there are gaps in your sealant, it’s easy for moisture to get behind it. Mould can then start growing.
How to prevent black mould from staining your sealant
There are a few key steps that you can take to try and prevent black mould from taking hold on your sealant and around your windows. These include:
Regularly wipe down your windows to remove condensation
Clean away dust, dirt, and dead bugs which black mould could feed off
Open windows as much as possible
Reduce humidity with a dehumidifier
Avoid drying clothes indoors
Deal with any leaks or damp issues quickly
Install extractor fans in the bathroom and kitchen
These steps could also help you prevent black mould from returning once you’ve removed it.
Find a professional to get rid of black mould
Black mould releases irritants and allergens, which makes it dangerous to be exposed to. So, if you spot it in your property, you’ll want to take action quickly.
We would always recommend getting a professional to check your window frames and replace any sealant that’s been damaged.
However, if you also have black mould stains in the areas on and around your windows, it’s sensible to also get the help of a professional cleaner near you. They’ll be able to ensure the mould is removed completely and safely, preventing you from being exposed to harmful toxins.
Simply enter your postcode below to find the right firm for the job.
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