Repair Systems — 03 — Facade & External Envelope
Acrylic spray-applied render systems
Technical product reference for acrylic spray-applied render systems used in facade render repair and reinstallation on Australian AAC and masonry buildings. Covers machine spray application, product selection, substrate preparation, and brand comparisons.
What are acrylic spray-applied render systems?
Acrylic spray-applied renders are pre-bagged factory-blended cement and acrylic polymer mixes designed for machine spray application over exterior facade substrates. Unlike trowel-applied polymer-modified renders, spray-applied systems are typically formulated with a specific consistency and acrylic content suited to pump delivery and spray application over large facade areas.
Product Reference
3 products — 3 brands — acrylic spray-applied render systems — scroll to view all
Rockcote Machine Render + Rockcote Finessa
Acrylic/cement spray-applied render — exterior facade
System Description
Rockcote's machine spray render system uses a pre-bagged acrylic/cement render applied by machine spray as the base coat. The finish coat (Finessa Fine Render) is applied by trowel or float to produce a smooth surface for coating. Machine spray application is suitable for large facade areas where spray equipment is available. Confirm product selection, equipment requirements, mix consistency, and application specifications with Rockcote/Saint-Gobain Weber technical before specifying. TODO: owner confirm — confirm specific Rockcote machine render product and TDS with Saint-Gobain Weber Australia.
Technical Properties
- Machine spray base coat — pre-bagged acrylic/cement render
- Suitable over AAC, masonry, and concrete substrates
- Large area spray application
Limitations
- Requires spray equipment — not suitable for hand application
- Confirm machine compatibility with Rockcote technical
- TODO: owner confirm — Rockcote machine render product, TDS, and current availability
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
Boral Acrylic Render System
Acrylic/cement render — spray or hand applied — exterior facade
System Description
Boral produces acrylic render systems for exterior facade use on AAC and masonry substrates. Confirm the specific Boral product for acrylic spray-applied render with Boral technical — the Boral range includes render systems suitable for machine spray and hand application. TODO: owner confirm — confirm specific Boral acrylic render product, application method, and TDS with Boral Australia technical.
Technical Properties
- Pre-bagged acrylic/cement render
- Suitable for exterior AAC and masonry
- Spray or hand apply (confirm method with Boral)
Limitations
- TODO: owner confirm — specific Boral acrylic render product, TDS and current availability
- Confirm machine spray suitability and equipment requirements
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
Weber Render Systems (Spray-Applied)
Weber machine spray acrylic/cement render — exterior facade
System Description
Saint-Gobain Weber Australia (trading as Rockcote/Weber) supplies machine spray render systems for facade application. Confirm the specific Weber product for spray-applied acrylic/cement render with Saint-Gobain Weber technical. TODO: owner confirm — Weber spray render product, TDS, and current range with Saint-Gobain Weber Australia technical before specifying.
Technical Properties
- Pre-bagged acrylic/cement — machine spray
- Suitable for exterior masonry and AAC
- Confirm substrate preparation, primer, and inter-coat timing with Weber technical
Limitations
- TODO: owner confirm — Weber spray render product, current availability, and TDS
- Requires spray equipment — confirm machine type and mix consistency with Weber technical
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
System Comparison
Side-by-side comparison of acrylic spray-applied render systems. Confirm all product selections against the current manufacturer TDS before specifying.
| Product system | Brand | Application method | Suitable substrate | Finish coat | Coastal | Primary use |
|---|---|---|---|---|---|---|
| Rockcote Machine Render + Finessa | Rockcote / Saint-Gobain Weber | Machine spray (base) + trowel (finish) | AAC, masonry, concrete | Rockcote Finessa | Confirm with Rockcote technical | Large facade re-render on AAC and masonry |
| Boral Acrylic Render System | Boral / USG Boral | Spray or hand apply (confirm with Boral) | AAC and masonry | Confirm with Boral technical | Confirm with Boral technical | Exterior AAC and masonry facade render |
| Weber Spray Render | Weber / Saint-Gobain | Machine spray | Masonry and AAC | Confirm with Weber technical | Confirm with Weber technical | Commercial facade machine spray render on masonry and AAC |
Do not confuse acrylic spray-applied render with:
- Trowel-applied PM render — polymer-modified cementitious render applied by steel trowel or float — listed on the two-coat polymer-modified render page
- Texture coatings (not a render — applied over cured render) — acrylic texture coatings applied over a cured render base coat as the final decorative finish — not a render system in themselves
- EIFS (system with insulation board) — systems incorporating a layer of EPS insulation board mechanically fixed to the substrate with render applied over fibreglass mesh — listed on the EIFS render systems page
- Sand-cement render (no acrylic polymer) — traditional Portland cement and sand render without acrylic polymer admixture — listed on the two-coat sand-cement render page
Disclaimer
This page provides general technical information only. Final product selection must be confirmed against the current manufacturer technical data sheet, project specification, substrate condition, exposure classification, AS 3700, NCC requirements, and applicator warranty conditions. Products marked TODO: owner confirm require verification before specifying. Do not rely on this reference as a substitute for professional engineering or facade consultant advice.