Installation Overview

Updated April 01, 2026

This guide explains the typical workflow for installing Molding Studio interior and exterior moldings made with an EPS foam core and a protective coating system.

  • Interior moldings: EPS foam core with a lightweight polymer-modified plaster coating.
  • Exterior moldings: precision-cut EPS foam core with a durable, flexible polymer-cement coating designed for strength, crack resistance, and weather resistance.

Important: Execution of installation must conform to the EIFS manufacturer’s requirements for environmental conditions, application, materials, and preparation—plus any project drawings/specifications. If project specs differ from this guide, follow the project specs.

What this guide covers

This installation series is broken into separate posts so you can follow the part you need:

  1. Environmental conditions & storage
  2. Surface preparation
  3. Measuring, layout & dry fit
  4. Cutting & fitting
  5. Adhesives & attachment
  6. Seams, joints & caulking
  7. Priming, painting & maintenance

Before you begin (quick checklist)

Tools you’ll typically need

  • Tape measure + pencil/marker
  • Level (2–4 ft) or laser level
  • Chalk line (for long runs)
  • Miter saw with a fine-tooth blade (or hand saw/miter box)
  • Sanding block or fine sandpaper
  • Utility knife (for light trimming)
  • Caulk gun
  • Putty knife / trowel (for adhesive and joint work)
  • Temporary supports (painter’s tape, clamps, bracing as needed)
  • PPE: eye protection, gloves, dust mask/respirator

Materials (confirm per project specs)

  • Manufacturer-specified EIFS-compatible adhesive/basecoat
  • Joint/patch material (as specified)
  • Mesh tape (if specified for seams)
  • Sealant/caulk (exterior transitions typically need a high-quality exterior sealant)
  • Primer + finish coats (as specified for the system)

Foam safety note: Avoid solvent-based adhesives or cleaners that can attack foam. Always use products compatible with EPS and per EIFS requirements.

The typical installation flow

  1. Confirm conditions (temperature, substrate, weather) and stage materials.
  2. Prepare surfaces so they’re sound, clean, and ready for bonding.
  3. Measure and plan your runs, joints, corners, and reveals.
  4. Cut and dry-fit pieces before applying adhesive.
  5. Bond/attach moldings per the specified adhesive method; brace as needed.
  6. Treat seams and transitions (fill, reinforce, and seal where required).
  7. Prime and finish with the specified coating system after proper cure.

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