Tips
Practical tips with worked examples: how much material you need, what to watch out for and how to avoid common mistakes on site.
- Attic floor insulation: how many cm of wool
How many centimetres of mineral wool a ceiling under an unheated attic needs for U 0.25, 0.30 or 0.20 – regulation, an 80 m² example and mistakes. - Hip roof: tiles, battens, membrane and gutters
How many roof tiles, ridge tiles, battens, rolls of membrane and gutters a hip roof needs – example of a 12 × 9 m house with a 30° pitch. - Drywall partition wall: how much material
Boards, CW and UW studs and tracks, wool, screws and joint compound for a drywall partition – example of a 4.5 × 2.6 m wall with one and two layers. - Epoxy garage floor: roller coat or self-levelling
How much primer, epoxy, quartz and topcoat a 6 × 3.5 m garage needs – roller coat or 2 mm self-levelling layer, and which packs to buy. - How many bags of plaster for a flat
Gypsum or lime-cement plaster for two rooms: net area, reveals, coat thickness, bags, primer and corner beads – with a worked example. - How many tiles to buy: cuts, waste and boxes
Net area versus purchase quantity, cut pieces and offcuts, an allowance added only once and rounding to boxes – with examples from the tile calculator and the 2D planner. - How much paint and putty for a room or flat
Room-by-room calculation: openings, ceiling, a tiled bathroom, ceiling and walls in different colours, and the total bags and buckets for a flat. - How much rebar do I need for a slab, footing and beam
How many 6 m bars, mesh sheets, stirrups and kilograms of rebar a slab, footing strip and beam need – with calculation examples. - How many blocks and bricks do I need for a wall
How many blocks, bricks and how much mortar a wall or garage needs: pieces per m², deducting openings, corners and calculation examples. - How much self-leveling compound for a whole flat
How to split a flat with different layer thicknesses into calculations, add up kilograms and bags, and what to watch at thresholds. - House facade: plinth, reveals, profiles and anchors
How the calculator separates the plinth and reveals, counts profiles, reinforcements and anchors by edge zones, and how to mark shared house corners. - How much concrete do I need for a slab, footing or column
How many cubic metres of concrete and bags of cement a slab, footing, column or fence post footings need – with examples and order rounding.