November 19, 2012 admin

EIFS & Stone Veneer

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What is Exterior Insulation Finish System (EIFS)?

Exterior Insulation Finish System or EIFS, also known as synthetic stucco, is a popular exterior wall finish. It has been applied to residential and commercial properties in the United States since the early 1970’s.
It differs from traditional hard-coat stucco in structure and application.

Most Common Type: Polymer-Based (PB) EIFS

A Class PB (Polymer-Based) EIFS consists of five main layers, each serving a specific function:

      • Substrate
        The existing wall surface.
        Can be brick, concrete, wood sheathing, or other structural surfaces.
      • Attachment
        Connects the insulation to the substrate.
        May use adhesive or mechanical fasteners (e.g., screws or anchors).
      • Insulation Board
        Usually made of expanded polystyrene (EPS).
        Provides thermal insulation and energy efficiency.
      • Base Coat with Mesh
        A stucco-like base coat layer.
        Contains embedded glass fiber mesh for added strength and impact resistance.
      • Finish Coat
        Decorative and protective outer layer.
        Offers color, texture, and resistance to weather and UV exposure.

Source: EIFS – Atlaro International & Co

What is Manufactured Stone Veneer (MSV)?

MSV is a lightweight, decorative cladding used on homes and buildings.
It mimics the look of natural stone but is easier to install.

Key Features:

      • Made from cement-based materials and aggregates.
      • May include pigments or admixtures.
      • Non-load-bearing — used for appearance, not structure.
      • Waterproofing details are similar to EIFS and traditional stucco.

Summary based on ASTM C1780.

How Can AMEI Help?

American Metropolitan Environmental, Inc. (AMEI) offers expert inspections for EIFS and MSV.

Services Include:

      • Certified inspections for EIFS and stone veneer systems.
      • Moisture testing to detect hidden water intrusion.
      • Identification of damage or areas at risk.
      • Detailed, easy-to-understand inspection reports.

Perfect for buyers, current property owners, or anyone concerned about moisture issues.

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