Calculator Calculate the number of thermal render bags you will needfor your project See Products Thermal Rendering Bags Calculator What is your wall type? Solid stone or brick wall (prior to 1900) Unfilled cavity wall (1900-1975) Unfilled cavity wall (1976-1982) Unfilled cavity wall (1983-1995) Unfilled cavity wall (1996-2002) Filled cavity wall (2003-2010) Filled cavity wall What is your wall thickness (mm)? 225 330 400 450 500 550 600 How thick will you apply Bauwer Light (mm)? 25 30 40 50 60 70 80 100 120 150 What is the Bauwer application area (m²)? Calculate Calculation Results Bauwer Light Bags Bauwer Finish Bags As-Built U-Value Improved U-Value Recommended U-Value Improvement (%) Please enable JavaScript in your browser to complete this form.Please enable JavaScript in your browser to complete this form.NameEmail Email Name Calculations PhoneCalculationsRequest Quote