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EIFS / ETICS

Terraco EIFS / ETICS externally insulated finishing systems combine thermal insulation with durable decorative facade finishes to cut building energy consumption.

Products for EIFS / ETICS

Terraco EIFS Alpha

Terraco’s bestselling EIFS Alpha system, often specified by architects and consultants alike for new and.....

Terraco EIFS Perma

Terraco’s EIFS Perma System uses mineral wool (MW) as the insulation material and is recommended.....

Terraco EIFS Polar

The popular Terraco EIFS Polar System uses XPS (Extruded Polystyrene) board as the insulation material......

Installation guide: How to install EIFS insulation boards on a facade

Setting out, bonding, fixing, reinforcing and finishing an external insulation system so it stays flat, dry and free of thermal bridges.

Typical duration
P10D
Tools
Notched trowel, rasp and sanding board, Hammer drill for mechanical fixings, Laser level and string lines, Corner and starter profiles
Materials
EPS or mineral wool insulation boards, Adhesive/basecoat mortar, Expansion plugs with thermal caps, Alkali-resistant reinforcing mesh, Primer and textured finish coat
  1. 1

    Survey and set out

    Check facade flatness — the system tolerates limited deviation. Mark the starter track level, plan board coursing, and set out movement joints to match the structure.

  2. 2

    Fix the starter profile

    Mechanically fix a levelled aluminium or PVC starter track at the base to support the first course and close the bottom edge against water and pests.

  3. 3

    Bond the boards

    Apply adhesive as a continuous perimeter bead plus centre dabs, or full-bed on flat substrates, targeting at least 40% contact. Press boards tight to each other with no adhesive in the vertical joints.

  4. 4

    Stagger and detail openings

    Lay boards in a running bond with staggered joints and interlocked corners. At window and door corners use L-shaped cut boards so no board joint lines up with an opening corner — that is where diagonal cracks start.

  5. 5

    Mechanically fix

    After 24 hours, install expansion plugs to the specified pattern and depth for the substrate, countersunk and capped so fixing heads cannot telegraph as cold spots.

  6. 6

    Rasp flat and fill

    Rasp the whole surface to a true plane and fill gaps over 2 mm with insulation offcuts or foam — never with adhesive mortar, which creates thermal bridges.

  7. 7

    Reinforce

    Apply basecoat, add diagonal mesh patches at opening corners, then embed the full mesh sheet with 100 mm overlaps into the middle third of a wet basecoat and skim over so the mesh is not visible.

  8. 8

    Prime and finish

    After the basecoat cures, apply the primer and then the specified textured finish coat, working elevation by elevation without cold joints.

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