Mastic sealant doesn’t last forever. Over time, it can crack, peel, or lose flexibility, which leads to leaks, drafts, and unsightly gaps. Knowing when it’s time to call in a professional resealing service is key to protecting your property.
Here are five common signs that your sealant needs replacing:
Cracks and gaps – Visible cracks mean the sealant is no longer providing protection. Water and air can easily seep through, causing long-term damage.
Discolouration and mould – If your bathroom sealant has turned black or yellow, it’s a clear sign that mould has taken hold. Resealing will freshen up the look and stop further growth.
Peeling or shrinking – Old sealant can peel away from the surface or shrink back, leaving gaps. This is especially common with DIY sealant jobs.
Leaks around baths, sinks, or windows – Water pooling around sealed areas usually means the mastic has failed. Professional resealing prevents damage to wood, tiles, and plaster.
Rising energy bills – Poor sealing around windows and doors allows drafts to enter, forcing your heating system to work harder. Fresh sealant improves insulation and lowers costs.
While DIY kits are available, a professional mastic sealant service guarantees a neat finish and long-lasting results. It’s a small investment that helps prevent costly repairs, reduces energy bills, and keeps your home or business protected.
