On-site spraying vs brush and roller

Where it wins

• +Finish standard reaches factory quality on a sound substrate
• +Even film build across large or repetitive areas
• +No brush or roller marks under raking light
• +Faster on big surfaces (ceilings, cladding, glazing systems)

Trade-offs

• −Requires full polythene masking, dust curtains and extraction
• −Over-spray risk in open or shared spaces if masking is rushed
• −Sample-cut needed before commitment on sensitive substrates
• −Drying or curing window changes shift planning

Where it wins

• +No over-spray. Safer in shared or partly occupied spaces
• +Less masking. Easier to phase around other trades
• +Touch-up later is straightforward with the same kit
• +Cheaper on small to medium scope

Trade-offs

• −Roller texture shows under directional light
• −Brush marks visible on flat joinery
• −Slower on large surfaces with consistent finish requirement