When Should You Replace Old Sealant?

Old or damaged sealant can cause serious problems if left untreated. Knowing when to replace sealant can save you money and prevent structural damage.

Signs Your Sealant Needs Replacing

Look for these common warning signs:

• Cracks or gaps in the sealant
• Peeling or shrinking
• Mould or discoloration
• Water leaks around windows or bathrooms
• Sealant pulling away from surfaces

If you notice any of these, it is time to act.

Why Timely Replacement Is Important

Replacing sealant on time helps:

• prevent water damage
• improve energy efficiency
• maintain a clean appearance
• protect your property value

Small maintenance now prevents costly repairs later.

Professional vs DIY

While DIY sealant may seem cheaper, professional application offers:

• correct surface preparation
• proper joint finishing
• longer lifespan
• cleaner results

For commercial or visible areas, professional work is strongly recommended.

Book a Sealant Inspection

Not sure if your sealant needs replacing? Pioneer Sealants can inspect and advise the best solution. Contact us today for expert help.

Need a hand? Pioneer Sealants can do this for you. See our bathroom resealing, window and door mastic, what affects the cost of sealant work pages, or contact our team.

Insured & pre-qualified

Peace of mind for homeowners, builders and main contractors.

• £10m Employer’s LiabilityInsurance cover
• £5m Public Liability & Professional IndemnityInsurance cover
• Constructionline Silver member
• CSCS Skilled WorkerSealant Applicator (NVQ Level 2)

Over 20 years in construction

Products we use

Professional-grade sealants and adhesives from leading manufacturers.

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Brand names and logos are trademarks of their respective owners and are shown to identify products we use. No endorsement is implied.