Roofing Materials Weight

Overview

Engineering reference data for Roofing Materials Weight in building construction.

Key Formulas

U-value

$U = \frac{1}{R_{total}}$

Overall heat transfer coefficient.

Heat Loss

$Q = U A \Delta T$

Heat transfer through building envelope.

Variables

Symbol	Description	Unit
$U$	U-value	W/(m²·K)
$A$	Area	m²
$\Delta T$	Temperature difference	K

Important Notes

• The weights listed are for the materials themselves and do not include the supporting structure (trusses/rafters).
• To calculate the total dead load of the roof assembly, the weight of the trusses or rafters must be added to the sum of the selected roofing, sheathing, and underlayment materials.
• The conversion factor between the two units is: $1 \text{ lbm/ft}^2 = 4.88 \text{ kg/m}^2$.

Interactive Charts

References

• Original Source