- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 18 Jan 2018
To help develop this article, click 'Edit this article' above.
Mastic is commonly used on construction projects as an adhesive and sealant. It is a popular choice where one surface needs to be adhered to another in a durable bond, or where the area needs to be protected.
Examples of uses for mastic sealant include:
- Bonding ceiling, wall and floor tiles.
- Bonding plywood panels.
- As a joint-sealer for windows and doors.
- Sealing the area around bathtubs and other sanitary appliances.
- As a filler for cracks in masonry and concrete.
Although mastic will usually resist some applied pressure, it is not flexible enough to accommodate large movements. Due to its viscosity, it is best applied to thick rather than thinner areas of application, such as large gaps and cracks. Before applying mastic, the area may not require priming, but it should be clean and dry. It is best applied by using a caulking gun.
 Find out more
 Related articles on Designing Buildings Wiki
Featured articles and news
The built environment can unlock opportunities for skills.
Additionality is a concept applied to activities and projects.
Some HPL cladding is very unlikely to adequately resist the spread of fire.
What a chartered architectural technologist does.
Building design and construction fees.
The world heritage list has evolved to embrace built, cultural and natural heritage.
The Ocean Cleanup project
The various types of bond and when they are used.
It's vital the industry responds to proposals for reform of the safety regulatory system.
RSHP's Merano wins RIBA accolade.
How to differentiate between partial possession and early use.
Ofwat proposes £12 billion additional investment and £50 bill reductions.