Insulating Material R-Values for Broiler Housing

The following guide tells you exactly how thick your chosen broiler house insulation material must be to achieve target R-values for best results:

1. Expanded Polystyrene (beadboard):

• Insulation Thickness (cm) for R20 (*SI R3.5) = 16 cm thick
• R-Value (US) per 2.5 cm (1”) = 3.0

2. Cellulose Blown

• Insulation Thickness (cm) for R20 (*SI R3.5) = 16 cm thick
• R-Value (US) per 2.5 cm (1”) = 3.2

3. Fiberglass batt

• Insulation Thickness (cm) for R20 (*SI R3.5) = 16 cm thick
• R-Value (US) per 2.5 cm (1”) = 3.2

4. Polystyrene, extruded plain (pink board)

• Insulation Thickness (cm) for R20 (*SI R3.5) = 10 cm thick
• R-Value (US) per 2.5 cm (1”) = 5.0

5. Polyurethane foam, un-faced

• Insulation Thickness (cm) for R20 (*SI R3.5) = 7 cm thick
• R-Value (US) per 2.5 cm (1”) = 7.0

[Source: Cobb Vantress Broiler Guide]