Masticing in Purley | Common Mistakes in Masticing & How to Avoid Them, Written by Your Local Sealant Specialist

Whether you're embarking on a DIY masticing project, it's crucial to understand common mistakes and how to avoid them. As the leading mastic man and sealant specialist in the Purley area, JJ Sealants have looked to provide that information on the page below. But if you’d rather defer to professionals, know that we’re dedicated to providing an unrivalled standard of masticing, mastic repairs and sealant repairs, ensuring projects are completed to the highest standards, and that said mistakes don’t cause you trouble and avoidable expenses further down the line.

Identification of Common Masticing Mistakes

So what are some of the most common mistakes that Purley residents make when forgoing the aid of a mastic man or sealant specialist, and undertaking masticing or sealant repairs themselves?


  • Poor Surface Preparation – One of the most frequent mistakes in masticing is failing to prepare the surface properly. Dirt, dust and moisture can prevent the sealant from adhering correctly, leading to premature failure.

  • Incorrect Application – Applying too much or too little sealant can compromise the effectiveness of the masticing job. Over-application can result in an unsightly finish, while under-application can leave gaps and reduce durability; we commonly encounter both situations around Purley when undertaking remedial mastic repairs as a local sealant specialist.

  • Using the Wrong Sealant – Not all sealants are created equal. Using the wrong type of sealant for your specific project can lead to poor performance and may require premature sealant repairs. A qualified mastic man, on the other hand, will always pick the right material for the job.

  • Inadequate Tooling – Failing to tool the sealant correctly can leave you with an uneven surface and weak bonds. Tooling helps ensure a smooth, professional finish and strong adhesion.

  • Ignoring Cure Times – Rushing the curing process can weaken the sealant. It's essential to adhere to the manufacturer's recommended curing times to ensure optimal performance. Be too impatient and Purley residents may find themselves in need of a sealant specialist to fix their masticing!

Tips & Techniques to Avoid These Errors

Purley residents who are dead set on being their own mastic man should keep the following tips in mind when undertaking either masticing, or sealant repairs…


Proper Surface Preparation – Ensure the surface is clean, dry and free from contaminants. Use a suitable cleaner and allow the area to dry completely before applying the sealant. This simple step can significantly improve the adhesion and longevity of your masticing.


Correct Application Methods – Follow the manufacturer's guidelines for applying the correct amount of sealant. A consistent, even bead of sealant is crucial. Use a steady hand and maintain a uniform speed to achieve the best results. Don’t trust yourself to do just that? Defer to the Purley area’s first choice for masticing and mastic repairs!


Selecting the Right Sealant – Consult with a sealant specialist to choose the appropriate sealant for your specific needs. Factors such as the material, location and exposure to elements will determine the best type of sealant for any given Purley project.


Effective Tooling Techniques – Tool the sealant immediately after application to smooth it out and ensure good contact with the substrate. Use a tool or your finger (wearing a glove) to press the sealant into the joint and remove excess material. Proper tooling helps create a neat, professional finish and enhances the sealant's effectiveness. It might not end up being quite the same quality as achieved by a professional mastic man or sealant specialist, but it might not be too far off!


Adhering to Cure Times – Allow the sealant to cure fully before exposing it to water or other stresses. This can vary from a few hours to several days, depending on the product and environmental conditions. Again, patience during this phase is critical to achieving a durable seal via masticing.


At JJ Sealants, we pride ourselves on delivering exceptional mastic repairs and sealant repairs in Purley. By understanding and avoiding these common masticing mistakes, you can achieve a professional, durable finish via DIY. But you need assistance, bring in a JJ mastic man – as our sealant specialists are already ready and raring to help.

Contact the Purley area’s first choice mastic man today for expert advice and masticing / sealant repairs tailored to your needs. You can reach us on 07860 168 973.