Roofing Material Weights: Complete Reference Table

Material weight matters for structural engineering, installation logistics, and material selection. Heavier materials may require structural reinforcement.

Quick Reference

2-5 lbs/sqft

Asphalt Shingles

0.5-2.5 lbs/sqft

Metal Roofing

6-15 lbs/sqft

Tile & Slate

Roofing Material Weight Table

Material Weight/Sq Ft Weight/Square Structural Notes
3-Tab Asphalt Shingles2.0 - 2.5 lbs200 - 250 lbsStandard framing
Architectural Shingles3.0 - 4.0 lbs300 - 400 lbsStandard framing
Designer/Luxury Shingles4.0 - 5.0 lbs400 - 500 lbsStandard framing (verify)
Steel Standing Seam1.0 - 1.5 lbs100 - 150 lbsStandard; can overlay
Aluminum Metal Roof0.5 - 1.0 lbs50 - 100 lbsLightest; can overlay
Steel Corrugated1.0 - 2.0 lbs100 - 200 lbsStandard framing
Stone-Coated Steel1.5 - 2.5 lbs150 - 250 lbsStandard framing
Copper Roofing1.5 - 2.5 lbs150 - 250 lbsStandard framing
Concrete Tile8 - 12 lbs800 - 1,200 lbsReinforcement usually required
Clay Tile6 - 10 lbs600 - 1,000 lbsReinforcement usually required
Natural Slate8 - 15 lbs800 - 1,500 lbsReinforcement required
Synthetic Slate2 - 4 lbs200 - 400 lbsStandard framing
Cedar Shakes3 - 4 lbs300 - 400 lbsStandard framing
EPDM Membrane0.3 - 0.5 lbs30 - 50 lbsStandard framing
TPO Membrane0.3 - 0.5 lbs30 - 50 lbsStandard framing
Built-Up Roofing (3-ply)2 - 4 lbs200 - 400 lbsStandard framing

Visual: Weight per Square Foot

EPDM/TPO
0.4 lbs
Aluminum
0.75 lbs
Steel Standing Seam
1.25 lbs
3-Tab Asphalt
2.25 lbs
Architectural
3.5 lbs
Clay Tile
8 lbs
Concrete Tile
10 lbs
Natural Slate
11.5 lbs

Midpoint values shown. Bar width represents relative weight per square foot.

Total Roof System Weights

A complete roof system also includes sheathing and underlayment:

Component Weight per Sq Ft
Plywood sheathing (1/2")1.5 lbs
OSB sheathing (7/16")1.3 lbs
Felt underlayment (30 lb)0.3 lbs
Synthetic underlayment0.1 lbs
Ice and water shield0.3 lbs

Example total system weight: Architectural shingles (3.5 lbs) + OSB (1.3 lbs) + synthetic underlayment (0.1 lbs) = 4.9 lbs per sq ft, or 490 lbs per square.

When Is Structural Reinforcement Needed?

Standard residential roof framing (2x6 or 2x8 rafters at 24" on center, or engineered trusses) is designed for a total dead load of approximately 15-20 psf. This comfortably supports:

Standard Framing OK

  • Asphalt shingles (any grade)
  • Metal roofing (all types)
  • Synthetic slate and rubber slate
  • Cedar shakes
  • Flat roofing membranes

Structural Assessment Required

  • Concrete tile: 8-12 lbs/sq ft (system: 10-14)
  • Clay tile: 6-10 lbs/sq ft (system: 8-12)
  • Natural slate: 8-15 lbs/sq ft (system: 10-17)

For material comparisons including weight considerations, see our metal vs tile and slate vs synthetic slate guides.

Frequently Asked Questions

Can I install tile over existing asphalt shingles?
No. Tile is far too heavy to install over existing roofing. A full tear-off is required, and the structure must be evaluated by an engineer before tile installation.
Can I install metal over existing shingles?
In many cases, yes. Metal roofing is lightweight enough (1-2 lbs/sq ft) to be installed over one layer of existing asphalt shingles without structural concerns. Check local building codes, as some jurisdictions require tear-off regardless of weight. Use our Metal Roof Calculator for material quantities.
How much does a full roof weigh?
A typical 2,000 sq ft roof with architectural shingles weighs approximately 9,800 lbs (4.9 lbs/sq ft x 2,000). The same roof with concrete tile weighs approximately 24,000 lbs. This total includes sheathing and underlayment.