Disclaimer

Last updated: May 2026

Planning estimates only

MaterialCalc provides quantity estimates for planning purposes only. All results are approximations based on standard formulas, typical waste factors and example coverage rates. Actual quantities required may differ depending on your specific materials, substrate conditions, installation method, and the skill of the person doing the work.

Always verify before you buy

Before purchasing materials, always verify quantities against the product data sheet for your specific product. Coverage rates, bag yields and application thicknesses vary significantly between manufacturers and product types.

Professional advice required for structural and safety work

For structural elements (foundations, load-bearing walls, staircases, roofing, decking), wet rooms (waterproofing systems, drainage), electrical and plumbing, and any work requiring a building permit — always consult a qualified architect, structural engineer, or licensed contractor. MaterialCalc does not provide structural, engineering or legal advice.

Building regulations vary

Building codes, energy regulations, fire safety standards and permit requirements vary by country, region and municipality. MaterialCalc does not represent or warrant that any estimate or guide complies with the regulations in your location. Always check with your local authority and qualified professionals.

No warranty

MaterialCalc is provided "as is" without any warranty of accuracy, completeness or fitness for a particular purpose. We are not liable for any loss, cost, injury or damage arising from reliance on the estimates provided by this site.