Knowledge base
Guides
Practical references for measurement, product data, limitations and purchasing decisions.
For example wallpaper or wall measurement.
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Measurement & units
Measure surfaces, runs and quantities with consistent units.
Product data & purchasing
Use product coverage, labels and package rounding deliberately.
- Allowance and product coverageSeparate net demand, coats, product coverage and contingency before rounding packages.Read guide · 4 min read
- How to read a product label and TDSIdentify the exact variant, distinguish TDS, DoP and SDS, and map product units to calculator inputs.Read guide · 4 min read
- Rounding to whole packagesCalculate whole pieces, packs, surplus and cost with one clear purchasing unit.Read guide · 3 min read
Concrete & siteworks
Plan measured concrete, fence runs and site material quantities.
- Concrete volume is not structural designWhy geometric concrete quantity cannot select dimensions, reinforcement, strength or bearing capacity.Read guide · 4 min read
- Fence runs and system post spacingSeparate fence runs and copy bay spacing from the current selected-system manual.Read guide · 4 min read
- In-situ excavation and aggregate volumeDistinguish geometric in-situ volume, target layer volume and supplier loose bulk data.Read guide · 4 min read
Interiors & finishes
Measure interior surfaces and interpret quantity and product limits.
- Drywall quantity limitationsCount faces and layers explicitly, then check framing and accessories against the chosen system.Read guide · 3 min read
- Plaster and skim coat consumptionChoose per-mm or per-coat consumption, measure thickness and turn planned mass into whole bags.Read guide · 3 min read
- Wallpaper repeat, match and batchRead matching symbols, calculate complete drops and verify roll yield and batches before cutting.Read guide · 3 min read
- How to measure wallsMeasure separate rectangular wall surfaces before calculating boards.Read guide · Instructions in the calculator
- How to measure openingsAssign rectangular doors, windows and recesses to the correct wall.Read guide · Instructions in the calculator
- Layers and waste allowanceCount cladding layers and apply the allowance once, after deducting openings.Read guide · Instructions in the calculator
- Whole-package purchasingSee how required boards are converted to complete packages.Read guide · Instructions in the calculator
- Drywall rounding methodologyLearn why every fractional board requirement is rounded upward.Read guide · Instructions in the calculator
Thermal
Understand entered thermal values and the limits of these tools.
- Lambda values for EPS, XPS and mineral woolRead product lambda, declared and design values. Compare documented EPS, XPS and mineral wool examples and calculate layer R correctly.Read guide · 5 min read
- How to calculate U-value from layersAdd homogeneous layer resistances, account for surface resistances and check the limits of a nominal U-value calculation.Read guide · 3 min read
- Dew point and condensation limitationsAir dew point is not an interstitial-condensation or mould assessment.Read guide · 3 min read
Roofing
Use measured roof data and product information for quantities.