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Loose-fill insulation.

Measure the supplied internal cavity volume after deducting obstructions.

Read the right quantitative data

Specified installed density and mass per bag.

Check this ordering assumption

The density of loosely packed material in a bag is not necessarily installed density.

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The tool does not choose installed density, settling allowance or performance requirements.

A worked quantity method

This illustrative set of supplied inputs demonstrates Insulation Fill Bags from Installed Density Calculator. Replace the example measurements and product figures with your own before ordering.

Supplied inputMetric displayUS display
Product installed density from your specification30 kg/m³1.87 lb/ft³
Net material mass per bag15 kg33.07 lb
Your additional material allowance0 %0 %
Fill zone 1: Measured zone area20 m²215.3 ft²
Fill zone 1: Specified filled depth200 mm7.87 in
Fill zone 1: Identical zones1 1
Bags = ceil(Σ(area × specified depth × count) × allowance × supplied installed density / bag mass).Convert separately measured fill volumes to bags using the installed density supplied for your selected product. Bags = ceil(Σ(area × specified depth × count) × allowance × supplied installed density / bag mass).

Insulation bags from supplied installed density: 8 bags

Specified fill volume with allowance
4 m³
Required material mass
120 kg

The installed density must be supplied for the selected product and application. Bag mass does not determine the appropriate installed density or thermal resistance.

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Measure the supplied internal cavity volume after deducting obstructions.

Specified installed density and mass per bag.

The density of loosely packed material in a bag is not necessarily installed density.

Input for Insulation Fill Bags from Installed Density Calculator. Record the value with its unit and quantity basis.

Input for Insulation Fill Bags from Installed Density Calculator. Record the value with its unit and quantity basis.

Input for Insulation Fill Bags from Installed Density Calculator. Record the value with its unit and quantity basis.

Input for Insulation Fill Bags from Installed Density Calculator. Record the value with its unit and quantity basis.

Input for Insulation Fill Bags from Installed Density Calculator. Record the value with its unit and quantity basis.

Input for Insulation Fill Bags from Installed Density Calculator. Record the value with its unit and quantity basis.

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  1. Confirm that all quantities use the same measured basis and the selected product's current data.
  2. Keep different products, finishes and handed variants in separate purchase lines.
  3. Review exact demand and whole-pack purchase quantities before entering your quoted prices.
  4. Record compatible stock already on hand, then save the remaining order in your browser project.

Measurement and purchase guides

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Reviewed 6 October 2026. Geometry and purchase arithmetic use your measurements and selected specifications. Calculation scope.

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