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What is a Lath Wall?

Published in Building materials 2 mins read

A lath wall is a type of wall construction primarily built using narrow strips of material, forming a base for plaster or stucco.

According to the reference provided, lath consists of narrow strips of wood, extruded metal, or split boards, nailed horizontally across the wall studs or ceiling joists. This framework creates a surface onto which finishing materials like plaster or stucco are applied, adhering well to the rough texture and gaps between the strips.

How Lath is Applied

The reference specifies the application process:

  • Placement: The lath strips are nailed horizontally across the wall studs or ceiling joists.
  • Coverage: Each wall frame is covered in lath, effectively creating the backing layer.
  • Fastening: The lath is tacked at the studs.

Materials and Dimensions

Lath can be made from different materials as noted in the reference:

  • Wood
  • Extruded Metal
  • Split Boards

For wood lath, the reference provides typical dimensions:

Characteristic Measurement
Width About one inch (2.5 cm)
Length Four feet (1.2 m)
Thickness 1⁄4 inch (6 mm)

Structure and Function

The network of lath strips, when applied to the studs, provides a rigid yet porous base. Plaster or stucco is then applied in coats, keying into the spaces between the lath strips to create a strong bond. This method was a common building practice for many years before the widespread use of drywall.

  • Key Function: Provides a substrate for plaster or stucco.
  • Structural Support: Attached directly to the framing (studs or joists).
  • Versatility: Can be used on both walls and ceilings.

This construction method creates a solid, durable wall surface once the plaster is fully cured.

Learn more about traditional building methods

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