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Yellow 4L pail of RLA Polymastic premixed acrylic wall tile adhesive for non-slump internal bonding.
Yellow 4L pail of RLA Polymastic premixed acrylic wall tile adhesive for non-slump internal bonding.

RLA Polymastic Pre-Mixed Tile Adhesive

A pre-mixed acrylic adhesive that grabs ceramic wall tiles straight from the pail, no slip and no mixing. D1TE classified with a 30-minute open time, grouting the next day.

Vendor: RLA
SKU: TILEADRLAPOLY/15
Availability: Out Of Stock
$112.91
$112.91
Prices do not include GST

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Flat-rate shipping $17.95 + GST (metro and standard zones). Excludes remote/regional/high-cost postcodes and certain items (DG, oversized, long-length, or bagged products 15 kg+). If your order includes any of these, we will contact you to arrange additional freight charges. Online purchases only.

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Description  

RLA Polymastic is a white, flexible, pre-mixed acrylic wall tile adhesive for internal tiling. Its D1TE classification, non-slump body and ready-to-use consistency make it a straightforward choice for porous ceramic, mosaic and suitable large-format wall tiles where installers want to avoid powder mixing.

Compare tile adhesives: See our complete tile adhesive range from ARDEX, Gripset, Mapei and RLA to compare flexibility, setting speed, wet-area suitability and tile/substrate requirements.

Best for

  • Internal wall tiling
  • Porous ceramic and mosaic tiles
  • Suitable large-format wall tiles
  • Plasterboard, fibre-cement sheet, concrete and cement render
  • Projects where a ready-mixed tile adhesive is preferred

Why choose RLA Polymastic?

  • Pre-mixed acrylic adhesive: ready to use without on-site powder mixing.
  • D1TE classification: dispersion adhesive with slip resistance and extended open time.
  • Flexible and non-slump: designed to hold wall tiles in position while maintaining good workability.
  • Large wall tile capability: RLA specifically positions Polymastic for larger wall tiles when substrate and tile porosity are suitable.

Tile and substrate compatibility

Polymastic is designed primarily for porous ceramic and mosaic tiles. Suitable prepared substrates include concrete, render, compressed fibre-cement sheeting and plasterboard. RLA also permits use over approved wet-area membranes with important restrictions.

Important membrane and tile limitations

Polymastic has limited suitability over waterproofing membranes. RLA advises against large or low-porosity tiles over these surfaces and notes that drying times can be significantly longer. Polymastic is an internal wall adhesive; it is not the correct choice for external tiling, floors or immersed applications. Moisture-sensitive stone also requires another system.

Application notes

Apply to a clean, sound and dry substrate using the trowel size appropriate to the tile. RLA advises working in approximately 1m² sections to avoid skinning, and back-buttering tiles larger than 300 × 300mm or tiles with heavily profiled backs. Always follow the current RLA technical data sheet and AS 3958.

RLA tiling system: For compatible preparation, waterproofing and finishing products, see RLA Universal Primer, RLA Safe2O and RLA Luminous Grout SSG.

Common Questions  

What classification does RLA Polymastic have?
It is a D1TE dispersion tile adhesive.

Can it be used on floors?
No. It is designed for internal wall tiling.

Can it be used in swimming pools?
No. Submerged applications are excluded.

How long before grouting?
Allow at least 24 hours, with longer drying where tiles or substrates are less porous.

Uses & Benefits  
Ready-to-use acrylic wall-tile adhesive for internal dry areas and residential wet areas. Non-slump paste holds ceramic, mosaic and compatible large-format wall tiles without on-site mixing. Classified D1TE. Open time is about 30 minutes at 23°C and 50% relative humidity. Typical coverage is about 9m² per 4L with a 6mm notched trowel.
How To Apply  
Prepare and install in accordance with AS 3958:2023. Use on clean, prepared wall substrates. Prime highly porous surfaces with RLA Porous Primer. Apply with the appropriate notched trowel in sections of about 1m². If the adhesive skins over, remove it and apply fresh material. For tiles larger than 300 x 300mm or tiles with deep backs, back-butter to achieve full contact. Keep the final adhesive bed at least 2mm thick and allow at least 24 hours before grouting.
Limitations and Safety Info  
Do not use for external applications, floor tiling or submerged areas such as swimming pools. Do not use for moisture-sensitive natural stone. Over waterproof membranes, do not use large or low-porosity tiles and expect longer drying times. Do not apply below 5°C or above 35°C. Allow at least 24 hours before grouting, with longer cure for dense tiles or low-porosity systems.
Suitable Substrates  
  • Plasterboard.
  • Compressed fibre-cement sheet.
  • Concrete and cement render.
  • Compatible RLA wet-area membranes subject to tile-size and porosity limits.

RLA Polymastic Pre-Mixed Tile Adhesive Physical Properties

RLA Polymastic Pre-Mixed Tile Adhesive Physical Properties
Property Value
Form Non Slump Paste
Specific Gravity 1.6
pH 8.5
Initial Boiling Point and Boiling Range <100 °C
Solubility in Water Miscible
Open Time 30 minutes
Full Cure 40 minutes
Ready for Grouting 24 hours
Classification D1TE
Coverage 9m² using a 6mm notch (per 4 litre pail)
Shelf Life 12 months

RLA Polymastic Pre-Mixed Tile Adhesive - Use Cases

Here are some common examples on where RLA Polymastic Pre-Mixed Tile Adhesive used by our customers.

Tiling

Large Wall Tile Bonding

Installing ceramic tiles larger than 300 x 300mm onto vertical internal surfaces, requiring slip resistance.

Its superior non-slump properties securely hold large tiles in place, reducing sag and enhancing productivity on vertical applications.

  • D1TE classified
  • Non-slump properties
  • Tiles over 300x300mm
  • 24 hours ready for grouting

Tiling

Internal Wall Ceramic Tiling

When bonding porous ceramic or mosaic tiles to internal wall surfaces like plasterboard or concrete.

This premixed acrylic adhesive provides flexible, non-slump hold, ensuring reliable bond and excellent workability for efficient application.

  • D1TE classification
  • 30 minutes open time
  • Flexible properties
  • White paste appearance

Tiling

Convenient Premixed Tiling Adhesive

When requiring a convenient, premixed adhesive for internal wall tiling jobs, avoiding on-site mixing hassles.

Its premixed acrylic formulation eliminates on-site mixing, saving time and ensuring consistent quality for efficient internal tile installation.

  • Premixed acrylic type
  • 4 litre and 15 litre pails
  • No on-site mixing required
  • Water clean-up when wet

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