General principles
All adhesives must be tested before installation — taking into account humidity and temperature at the installation site. The veneer moves together with the substrate: it expands and contracts with it, so thermal expansion must be taken into account in exterior applications. Otherwise, delamination may occur.
Fibreglass backing
Applies to: slate, quartzite, marble, limestone, sandstone and concrete (Fusion line).
Bending
The sheet bends to a minimum radius that depends on the type and colour of the stone. A tighter radius can be achieved after warming. Always do a test before installation.
Substrate preparation
Clean, dust and degrease the surface. Preparation and layout are the same as for natural stone or tiles.
Layout
Dry-fit the sheets exactly where they will be installed — this way you plan the layout of pattern, texture and colour. Number the sheets before cutting; this saves time when laying them again.
Cutting
Use standard woodworking tools: a table saw with a tungsten carbide blade, long tin snips, wet-cutting saws or metal shears. For CNC machining, use a composite router bit. You can make bevels on a table saw or by hand with a sanding block — a few passes are enough.
Grout and joints
Sheets can be butt-jointed or laid with a grout joint for a tile effect. With thin veneer, a narrow joint looks better. Water-based epoxy grouts, ready-mixed acrylic grouts and sanded grouts work best. Protect the edges with masking tape and remove epoxy grout carefully with a sponge — it can penetrate the stone surface. Outdoors, we recommend leaving a joint between sheets.
Rolling and pressing
Remove air from under the sheet with a hand roller, working from the centre towards the edges. Do not press too hard, so as not to squeeze out excess adhesive. Do not use moisture-curing adhesives if the substrate is a vapour barrier — they will not cure properly between non-porous materials. Cold pressing or vacuum pressing through a foam layer is possible.
Sealing
The sheets are factory-sealed. Indoors, re-sealing is not necessary. Outdoors and in wet areas, we recommend re-sealing after 7 years — e.g. with ProtectGuard® MG or Akemi Stone Impregnation.
Translucent backing
Applies to: slate and quartzite (Lumina line).
The rules for bending, substrate preparation, layout and cutting are the same as for the fibreglass backing. The sheets are factory-protected; outdoors and in wet areas, we recommend re-protecting them after 7 years. Use clear adhesives for bonding — an opaque bond line will be visible when backlit.
Fabric backing
Applies to: slate, quartzite and marble (Eco Fusion and Eco Lumina lines). For dry interiors only.
Straight lines and curves are easiest to cut with long tin snips, scissors or a knife. CO₂ or fibre laser cutting is also possible. The sheets are pre-sealed; if re-sealing is necessary, we recommend ProtectGuard® MG or Akemi Stone Impregnation.
Recommended adhesives
Fibreglass backing (indoors and outdoors)
- Loctite PL Premium Max — polyurethane construction adhesive
- Gorilla Glue Original — polyurethane adhesive
- Titebond Ultimate — solvent-free FRP panel adhesive
- Litoelastic EVO — acrylic copolymer tile adhesive
- 3M™ VHB™ 5952 — double-sided tape
Translucent backing (indoors and outdoors)
- Loctite Power Grab Ultimate Crystal Clear — acrylic adhesive
- Gorilla Max Strength Clear — clear construction adhesive
Fabric backing (interiors only)
- Roman Pro-880 Ultra® Clear Strippable — wallcovering adhesive
- 3M™ Hi-Strength 90 — spray adhesive
- 3M™ Fastbond™ 30NF — contact adhesive
Important notes
- Test before installation. Try the adhesive on a small, hidden area under the target conditions.
- Adhesive manufacturer's instructions. Follow the recommendations on preparation, application, curing time and safety.
- Ambient conditions. Temperature, humidity and exposure affect adhesive performance.
- Professional installation. For large areas and for the Fusion and Lumina lines, we recommend an experienced contractor.
- Product changes. Adhesive manufacturers may change their formulas — check the current technical data sheet.
- Warranty. Using an adhesive that is not recommended may void the warranty.
The adhesives listed are recommendations based on compatibility tests and experience. Casadenza and QUC Sp. z o.o. do not manufacture or sell these adhesives and give no warranty for their performance. The contractor is responsible for choosing and using the adhesive.
