Masonry EPS Clay Brick Slips EWI System
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Masonry EPS Clay Brick Slips

Masonry EPS Insulation Clay Brick Slips
System Build-Up

Layer-by-layer system specification

This is Licata's EWI system for masonry substrates using EPS insulation with a clay brick slip finish, delivering the authentic appearance of traditional brickwork with the thermal performance of a modern EWI system. Licata supplies the complete system from a single source.

Raso Top 800 is used as both the insulation adhesive and the reinforced basecoat. Super S1, Licata's S1-rated flexible tile adhesive, bonds the clay brick slips to the prepared basecoat, providing the flexibility required to accommodate thermal movement in the system.

Masonry EPS Clay Brick Slips System Build-Up
System Layers

Products

1
Layer 1: Substrate
Brick or Block Masonry
Existing or new masonry substrate in brick or block. Must be structurally sound, clean and free from contamination, organic growth, loose render or paint. Any defects or voids should be repaired before insulation is fixed.
2
Layer 2: Insulation Adhesive
Raso Top 800
Polymer-modified cementitious adhesive, applied to the rear of the EPS board using the dot-and-dab or full-bed method to bond the insulation to the masonry substrate.
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3
Layer 3: Insulation
EPS Insulation Board
Expanded polystyrene (EPS) insulation boards, thickness specified by U-value calculation. Fixed to the masonry using Raso Top 800 adhesive and mechanically secured with EWI fixings. Boards staggered at joints with no gaps.
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4
Layer 4: Mechanical Fix
Insulation Fixing
Mechanical EWI fixings, installed through the insulation board into the masonry substrate. Fixing type and density determined by pull-out testing and wind load calculations. Fixings must be flush with or counter-sunk below the board face.
5
Layer 5: Basecoat
Raso Top 800
Polymer-modified basecoat, applied over the insulation boards in two passes to encapsulate the fibreglass mesh. First pass embeds the mesh, second pass covers it fully. Minimum total thickness 4 to 6mm. Allow to cure before applying brick slip adhesive.
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6
Layer 6: Reinforcement
Fibreglass Mesh
Alkali-resistant fibreglass reinforcement mesh, embedded into the first pass of Raso Top 800 basecoat. Minimum 100mm laps at all joints. Additional diagonal mesh at all openings to prevent corner cracking.
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7
Layer 7: Brick Slip Adhesive
Super S1
S1-rated highly flexible cementitious tile adhesive, used to bond the clay brick slips to the cured Raso Top 800 basecoat. The S1 deformability classification provides the flexibility required to accommodate thermal movement in the EWI system without cracking or debonding.
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8
Layer 8: Finish
Clay Brick Slips
Clay brick slips are thin brick-faced tiles bonded to the EWI basecoat using Super S1 adhesive. Deliver the authentic appearance of traditional brickwork with a fraction of the weight. Available in a wide range of brick colours and textures. Joints pointed on completion.
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Benefits

Benefits of Masonry EPS Clay Brick Slips

Thermal Performance

EPS insulation significantly reduces heat loss through the external wall, improving U-values and contributing to Part L compliance and energy efficiency targets.

Authentic Brick Appearance

Clay brick slips deliver the genuine look and texture of traditional brickwork, ideal for projects where planning requirements, design codes or heritage context demand a brick finish.

Flexible S1 Adhesive

Super S1 brick slip adhesive accommodates thermal movement in the EWI system, preventing the cracking and debonding that can occur with rigid adhesives on insulated substrates.

Single Source Supply

Licata supplies the complete system of insulation, fixings, mesh, adhesive, basecoat, primer and render, simplifying procurement and ensuring full system compatibility.

Products in This System

Full system, supplied by Licata

Raso Top 800

Raso Top 800

Adhesive and basecoat. Layer 2 and Layer 5.

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EPS Insulation Board

EPS Insulation Board

Supplied in the required thickness for the specified U-value.

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Insulation Fixings

Insulation Fixings

Type and quantity by pull-out testing and wind load calculations.

Fibreglass Mesh

Fibreglass Mesh

Alkali-resistant reinforcement mesh embedded into the basecoat.

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Super S1

Super S1

S1 flexible tile adhesive. Bonds clay brick slips to the EWI basecoat.

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Clay Brick Slips

Clay Brick Slips

Authentic clay brick-faced tiles. Wide range of colours and textures.

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Downloads

System documentation

System Brochure Cover
Brochure
EWI Systems Brochure
Download
Generic Specification Cover
Generic Specification
Generic Specification for Masonry EPS Clay Brick Slips
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Specify this EWI system

Contact our technical team for U-value calculations, NBS specification clauses, product quantities and full system documentation.

Contact Technical Team All EWI Systems