Fine Surface FillerRoundtower Fine Surface Filler is a dry, ready mixed powder filler, specially designed for fine crack repairs and surface smoothing on lime or cement plaster backgrounds. This breathable filler is ideal for heritage and conservation work, offering fast setting, early sanding, and vapour permeability. Colour: Light tan once set Set Time: ~4560 minutes Application Areas: Lime or cement walls and ceilings Breathable: Vapour permeableideal for solid wall

including lime-based and mineral plasters

This is especially useful in retrofits when the ends of the pipes and cables cannot be accessed to slide on a grommet

Lay parallel or at right angles to rafters

Manufactured using Prompt Natural Cement and natural sands

Investigation

Its tongue-and-groove profile helps create a windtight outer layer while maintaining vapour permeability

and compatibility with lime and mineral plasters makes them particularly useful within breathable construction systems

it does not rely on carbonation to harden and can therefore be used in permanently damp or submerged conditions

External insulation within breathable wall systems

historic brickwork

Why Use Roundtower Wood Lath Render

Extremely vapour open (sd ≈ 0