Painting & Plastering Job Costing: Swiss NPK 342, VOC Incentive Tax & Mould Remediation (SIA 242)
Operational guide for Swiss commercial painting contractors, plasterers, and façade applicators: surface takeoffs under SIA 242 / SIA 118, NPK 342 deduction rules, VOCV solvent tax compliance, FOPH mould remediation protocols, and BKP 227 / 228.