We're here for all your sealant needs

No matter how big or small the project, we've always tackled each one with 100% professionalism and hard work.

Our rates are very competitive

We have been trading since April 1984 and in that time we have built up great working relationships with the main contractors that we carry out work for, on all types of sealant work from small to large contracts.We are a member of CHAS and CITB and our whole workforce have CSCS sealant Applicators Cards.

Our Projects

Our projects have been varied - whether they be residential contracts or commercial, or within the education or medical sectors, our customers have always been satisfied with the results. But don't just take our word for it - see for yourself what people have had to say about DJT Mastics.


"We've worked with DJT Mastics for a number of years. They have provided a quality sealant service for internal and external works over the years and are very flexible in their approach. Their work has always been completed safely, on time and within budget. We have recently completed the Drayton Manor Hotel project at £22m, along with many other projects."

M.J. Hatton, Contracts Manager,
A & H
Construction and Developments PLC

Health Sector

"DJT Mastics were employed to undertake the complete mastic sealant works at the Neo Natal Unit at Birmingham Women's Hospital and performed to an extremely high standard. I would have no hesitation in recommending DJT Mastics Ltd as a Specialist Mastic Sealant company that can deliver within tight deadlines and add value to any project."

Simon J Mann, Senior Quantity Surveyor, Vinci Construction


"I have used Terry and Dave at DJT Mastics over the last 15 years for all my sealant joining and more recently air-sealing. DJT have proved over the years that they are both a reliable and flexible contractor, with whom we have a good working relationship. DJT have an excellent safety record with Kier Moss and employ a fully compliant CSCS work force and are also CHAS registered. They produce a good standard of work and are financially competitive and easy to deal with. I would have no problem in recommending the use of DJT Mastics for future projects."

John Leo, Project Manager, Keir Moss


"DJT Mastics were employed to undertake mastic sealant works at the Walsall Performance Hub project and undertook and completed the work to an extremely high standard. DJT Mastics have consistently proven that they can complete work to a high standard and on time at a competitive rate. I would have no hestitation in recommending them for future projects."

Simon J Mann, Senior Quantity Surveyor, Vinci Construction


"DJT Mastics were employed in our £21m student accommodation project to carry out our £20,000 of joint sealing, both internally and externally. Their workmanship was always of the highest standard and they worked to very competitive rates. They always attended the site when required and often at very short notice. Their account was settled without issue and I would definitely recommend DJT for future work."

Richard Peevor, Commercial Manager, Vinci Construction


"We employed DJT to carry out the joint sealing on our £14m multi-storey car park project and they completed their works to programme under very difficult site conditions. Their work was of a very high quality and they worked well with our site team. They offered good value engineering solutions to some tricky details. This was to the benefit of all on the project. Their rates are competitive and we wouldn't hesitate to recommend them for other projects."

Richard Peevor, Commercial Manager, Vinci Construction

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