At the heart of every plaster is a binder—a key ingredient that hardens and holds the material together. The three primary binders are:

  • Gypsum: Used in gypsum plaster (or plaster of Paris), this mineral-based binder is favoured for its smooth finish, easy application, and fire-resistant properties. It's ideal for interior walls and ceilings.
  • Lime: Known for its natural and breathable qualities, lime plaster excels in moisture control and is often used in historic buildings or damp-prone areas like basements.
  • Cement: Renowned for its strength and durability, cement plaster is the top choice for exterior walls but can also be used indoors in high-traffic areas or where extra toughness is required.

 

Choosing the Right Plaster for Your Project

Here’s a rundown of common plaster types and their ideal uses:

  • One-Coat Plaster: Combines a base coat and finish layer in one product. It's suitable for patch repairs and quick applications.
  • Multi-Finish Plaster: Versatile and quick-drying (about 90 minutes), this plaster provides a smooth surface on various materials.
  • Bonding Plaster: Easy to spread and apply, it's ideal for creating a smooth finish on walls and ceilings or as a base layer on different surfaces.
  • Browning Plaster: Similar to bonding plaster but best suited for absorbent surfaces like brick. Works as an excellent undercoat.
  • Hardwall Plaster: Designed for durability, this heavy-duty option is perfect for high-traffic areas. It dries quickly and is easy to apply.
  • Tough Coat Plaster: Exceptionally hardwearing and ideal as a base layer. While it provides a sleek finish, it must be shielded from moisture to prevent adhesion issues or visual flaws.
  • Magnetic Plaster: This innovative plaster can turn walls into magnetic surfaces, making it perfect for functional spaces like classrooms or creative work areas.

 

Factors to Consider When Selecting Plaster

To choose the right plaster, think about:

  1. Location: Is the application for an interior or exterior space?
  2. Moisture: Does the area have high humidity or dampness?
  3. Finish: Are you aiming for a smooth or textured surface?
  4. Durability: How much wear and tear will the surface endure?

Consulting a professional can help ensure you pick the right plaster for your specific needs.

 

We are also here to help! Speak to our friendly experts in our Colchester or Bury St Edmunds branches for more advice and prices.