Spaces
The plan represents internal dimensions and approximately scaled elements. Conflict detection can flag overlapping furniture or elements outside the room boundary, but it does not certify accessibility, ergonomic clearances or regulatory compliance.
Walls
Paint is estimated from net surface area multiplied by the number of coats, divided by the specified coverage rate, with an adjustable allowance. Wallpaper is estimated in complete strips using roll length, trim margins and pattern repeat. Tile estimates use surface area and tile dimensions, not a detailed installation layout.
Floors
We calculate floor area from a polygon outline, divide by the area of a tile, add a cutting and breakage allowance, and round up to the number of tiles per box. Cutting patterns, grout joints and room geometry can materially change the amount required.
Roofs
For roof faces with uniform pitch, estimated surface area is the horizontal projection divided by the cosine of the slope angle. Complex junctions and different pitches require separate calculations. The tool does not assess structural design, drainage, fasteners or material compatibility.
Checking your results
Measure twice and verify the units. Before purchasing, check pack sizes, effective coverage and product specifications. For any work affecting structural safety, waterproofing or building services, consult a qualified professional and local rules.