About CasaPractic

Calculators for paint, wallpaper, tiles, laminate, tile adhesive, grout, concrete, screed and insulation boards, a U-value calculator for walls and a renovation budget planner, together with guides that explain the methods behind them.

The English and German sections are a selection of the most widely useful tools from CasaPractic.ro, a Romanian site with more than 130 calculators. Cipică, the AI assistant, works in English too; some tools are still available only on the Romanian site.

The calculators use standard formulas: consumption figures from manufacturers' data sheets, the waste allowances commonly used by tradespeople and, for U-values, the method of EN ISO 6946. Each page shows the steps, a worked example with the default values, the assumptions and the cases where the result needs adjusting.

The calculators and guides are free. The site is supported by advertising shown through Google AdSense — personalised ads only with your consent — and, on the Romanian site, by affiliate links and paid services. No company pays to influence a calculation.

CasaPractic is an independent project started in Bucharest by Cătălin Nastasă, who builds and maintains the calculators. It is not a substitute for a structural engineer, an energy adviser or a licensed installer: the aim is to help you talk to them well informed. If you find a mistake in a calculation or a guide, please write — corrections from readers are the best thing that can happen to the site.

• CĂTĂLIN NASTASĂ Persoană Fizică Autorizată
• Romanian tax identification number (CUI): 50387940
• Trade Register number: F2024005261406
• European Unique Identifier (EUID): ROONRC.F2024005261406
• Registered office: Str. C. C. Arion nr. 11, parter, ap. 1, Sector 1, București, România
• Email: contact@casapractic.ro

For questions, corrections or partnership proposals, write to contact@casapractic.ro.