Wall Insulation

More about: Wall Insulation

What it calculates

The “Wall Insulation” calculator computes Insulation in m³ from 5 parameters: wall area excluding openings (m²), required thermal resistance (m²·°C/W), wall resistance without insulation (m²·°C/W), insulation conductivity λ (W/(m·°C)), cutting allowance (%).

Used in design, material estimation, and structural calculations.

Example calculation

With parameters Wall area excluding openings = 100 m², Required thermal resistance = 3.13 m²·°C/W, Wall resistance without insulation = 0.7 m²·°C/W, Insulation conductivity λ = 0.04 W/(m·°C), Cutting allowance = 5 % the result is 10.5 m³ (Required resistance depends on the region (heating degree-days) — see Russian code SP 50.13330).

How to use

1. Enter wall area excluding openings, required thermal resistance, wall resistance without insulation, insulation conductivity λ and cutting allowance — each field above is adjustable with a slider.
2. Insulation (m³) is calculated automatically as you type.
3. Check the worked example below to see the formula applied to real numbers.
4. Copy the result or bookmark this calculator.

Related calculators

• Bolts and Studs
• Roofing Staples
• Laser Level Range
• Metal Screws