The render on our apartment building's facade or side wall is blistering and falling. How is it repaired and painted from scaffolding?

Apartment building exteriors — especially tall side elevations — take the brunt of rain and sun. Once the renderRender (plaster)A layer of mortar (sand, cement or lime, and water) spread over brick or concrete to give a wall a straight, sound surface ready for paint or tiles. along corners or walls blisters and starts crumbling, falling pieces become a hazard and rainwater soaks into the flats inside.

To work safely across the full height of the building, scaffolding wrapped in protective netting is erected to contain dust and debris. The crew checks the wall floor by floor and strips back every hollow or crumbling patch.

All opened areas and building corners are repaired, filled with exterior-grade compounds, primedPrimerThe thin first coat that goes on before the main material. It binds dust, seals the pores and helps paint or waterproofing stick firmly. and painted from the top floor down. Once the scaffolding comes down, the elevation is sound, weatherproof and clean.