Coated Wire Mesh for Roof Insulation: Choosing Between Electro-Galvanized, Hot-Dip, and Hexagonal Mesh

Coated Wire Mesh for Roof Insulation: Choosing Between Electro-Galvanized, Hot-Dip, and Hexagonal Mesh

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Fiberglass or rock wool installed under a metal sheet roof or industrial structure is heavy and tends to sag over time. Without good support it hangs down, leaves gaps, and loses thermal performance. Coated wire mesh is the basic material that holds and supports insulation in place.

Coated wire mesh resists weather and corrosion, making it suited to long-lived insulation installations under roofs and industrial structures.

Welded Wire Mesh (Square)

Welded square mesh is strong and holds its shape, ideal for supporting insulation batts or rolls across roof framing. Available in 0.90 m and 1.20 m widths.

• Electro-galvanized (cold): #16 wire (1.60 mm) with 2"x2" openings, and #14 wire (2.00 mm) with 1"x2" openings, for indoor or low-humidity roofs

• Hot-dip galvanized: #14 wire (1.70-2.00 mm) with 1"x1" and 1"x2" openings, or #16 wire (1.60 mm) with 3/4"x3/4" openings. More corrosion resistant, for outdoor and humid areas

Hexagonal Mesh

Hexagonal mesh is flexible and conforms to surface shapes, suited to wrapping pipes, tanks, and curved surfaces.

• 0.90 m width: #18-25 wire (0.50-1.20 mm), 1/4"-1" openings, 5-18 kg per 30 m roll

• 1.20 m width: #18-25 wire (0.50-1.20 mm), 1/2"-1" openings, 7-24 kg per 30 m roll

How to Choose for Your Site

• Under metal sheet roofs carrying insulation weight: heavier-gauge welded square mesh

• Outdoor or humid areas: hot-dip galvanized for corrosion resistance

• Pipe wrapping or curved surfaces: hexagonal mesh

Conclusion

The right mesh keeps insulation in place and performing for years. Contact Centrotec for a consultation and a quote on coated wire mesh together with insulation.