Indoor plasters and outdoor renders are used to smooth or repair rough or damaged walls before the decorative finishing layer. They are applied :
- to fill the cracks/gaps
- to level/texture the whole surface
Good workability, excellent adhesion, water vapour permeability, resistance to cracking, quick drying and non-efflorescence are classical performance requirements.
Decorative renders must provide the wall surface with :
- Aesthetic functions (flatness, texture and colour)
- Technical functions (protection from climatic conditions, corrosion, mechanical actions, fire)