Mouldy sealant is not a good look but there are ways to keep it fresh and clean.

Combat mildew with one of the powerful mildew-tackling products on the market designed specifically for sealant. If the one you try doesn’t seem effective after the first go, try again – it may take several applications to beat the problem.

Stubborn mildew that simply won’t budge calls for radical action – your best bet is to remove the sealant altogether and re-seal, choosing a good-quality product.

Always check manufacturer’s instructions first, before you apply the product. Always try a test patch first. If you are unsure as to whether the item you are cleaning is suitable for our instructions, take professional cleaning advice first.