Plastalite Metal Lathing Plaster


Plastalite Expanded Metal Lathing Plaster is a gypsum based backing coat to be used on expanded metal.
For internal use.


Used on expanded metal to form a base / scratch coat. EML Plaster is then used to form the “float” coat ready for the Plastalite Multi-Finish set coat.
These materials can also be used to repair traditional Wood Lath Ceilings.

Plastalite Plasters can be used adjacent to Heritage type plasters (e.g. sand & lime based) or Modern type plasters (e.g. cement or gypsum based) without detriment.


  • Light weight
  • High Adhesion
  • Fire proof
  • Anti-corrosion additives
  • Sound Proofing
  • Insulant
  • Easy mixing


 Recommended Coating Thickness  
 Scratch Coat  Approximately 10mm
 Float Coat  Minimum 8mm
 Setting Time  1 – 1.5 hours
 Shelf Life  3 months
 Approximate coverage per 20kg pag  1.5 – 2 m2


Expanded Metal should be nailed or screwed to the joists. Overlap joints by 50mm and wire together at centre between joists. Expanded Metal must be tight and fixed in a “brick bond” pattern so joints running in line with joists are staggered.

Mix material with water in a suitable mixing vessel (plasterers bath) to a workable consistency. Apply the mixed material with a trowel pressing the material firmly so it passes through the expanded metal leaving approximately 5mm on the face of the expanded metal. Apply at a 45 degree angle to the expanded metal. After initial set (approx. 1 hour) scratch the surface to provide a key for the float coat. Apply the float coat at approximately 8mm thickness, screed and wood loat to a flat even surface ready for a set finish.


Plastalite Expanded Metal Lathing Plaster can not be used externally or in areas where it will be subjected to water.
(e.g. shower areas).

For external or wet area applications refer to Plastalite “Rehabilitation Render” data sheet.


Plastalite EML Plaster is supplied in 20kg plastic lined, multi-walled paper bags.


Refer to Westlegate Pty Ltd Material Safety Data Sheet (MSDS) for instructions.

The information contained on this site is intended to give a fair description of the products and their capabilities under specific test
conditions.It does not constitute an offer by the manufacturer, nor does the manufacturer warrant or guarantee its accuracy or
completeness in describing the performance or suitability of the various products !