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RLA Luminous SSG is a high-performance standard-set tile grout for internal and external joints from 1.5mm to 15mm. Its smooth, shrinkage-compensated formulation combines water and mould resistance with reduced water absorption, good colour uniformity and a consistent coloured finish.
Compare tile grouts: Browse the full tile grout range to compare joint widths, setting speed, colour options and wet-area suitability. For chemically resistant or hygiene-critical installations, compare our epoxy tile grouts.
Best for
- Tile joints from 1.5mm to 15mm
- Porcelain and ceramic tiles
- Terrazzo, slate and quarry tiles
- Glass and mosaics
- Moisture-insensitive natural stone
- Internal and external tiling, including underfloor heating systems
Why choose RLA Luminous SSG?
- Broad 1.5–15mm joint range: covers both fine and wider everyday tile joints.
- Smooth finish: designed to reduce dirt retention and improve cleanability and stain resistance.
- Water and mould resistant: supports long-term appearance in demanding tiled environments.
- Shrinkage compensated: helps reduce cracking as the grout cures.
- Strong colour range: available in multiple colours for matching or contrasting tile installations.
Tile and stone compatibility
RLA lists Luminous SSG for porcelain, ceramic, terrazzo, slate, quarry tile, glass, mosaics and natural stone excluding moisture-sensitive types.
Immersed and demanding applications
For continuously immersed pools, chemical exposure and heavy-duty cleaning, confirm the grout system specified for the application before purchasing. A standard cementitious grout is not a substitute for a chemical-resistant epoxy grout.
Important limitations
Do not use Luminous SSG where chemical-resistant grout is required; use an appropriate epoxy grout. Movement and expansion joints require a flexible sealant. Porous or textured finishes should be tested before grouting.
Complete the RLA tiling system
For internal wall tiling, see RLA Polymastic Pre-Mixed Tile Adhesive. Always allow the tile adhesive to cure before grouting and follow the current RLA technical data sheet and AS 3958.
What joint width is Luminous Grout SSG for?
The current RLA product page states 1.5–15mm.
Can it be used internally and externally?
Yes.
Can it be used for movement joints?
No. Use a suitable flexible RLA silicone sealant.
Can it be used on moisture-sensitive natural stone?
No. Moisture-sensitive stone is excluded.
- Porcelain, ceramic, terrazzo, slate, quarry tile, glass and mosaics
- Natural stone: suitable except moisture-sensitive stone
RLA Luminous SSG Tile Grout Physical Properties
| Property | Value |
|---|---|
| Product Type | Standard set ceramic tile grout |
| Classification | CG2W (ISO 13007) |
| Certification | Global Green Tag Certified |
| Form | Powder |
| Colours | White, Alabaster, Misty Grey, Mudberry, Light Beige, Magellan, Travertine, Havana, Macchiato, Slate Grey, Charcoal, Black |
| Joint Width | 1 mm to 15 mm |
| Application Areas | Internal and external; suitable for immersed applications |
| Compatible Tile Types | Porcelain, ceramic, terrazzo, slate, quarry tiles, glass, natural stone (excluding moisture sensitive), mosaics |
| Mixing Ratio | 240 mL water per kg; 960 mL per 4 kg bag; 2.4 litres per 10 kg bag |
| Stand Time After Mixing | 3 minutes before lightly remixing |
| Pot Life | 45 minutes–1 hour at 23°C and 50% relative humidity |
| Light Foot Traffic | 24 hours at 23°C and 50% relative humidity |
| Full Service | 3 days at 23°C and 50% relative humidity |
| Application Temperature | +5°C to +35°C |
| Underfloor Heating | Yes |
| Shrinkage | ≤3 mm/m (ISO 13007) |
| Water Absorption After 30 Minutes | ≤2 g (ISO 13007) |
| Water Absorption After 4 Hours | ≤5 g (ISO 13007) |
| Compressive Strength At 28 Days | ≥15 MPa (ISO 13007) |
| Flexural Strength At 28 Days | ≥2.5 MPa (ISO 13007) |
| Compressive Strength After Freeze/Thaw Cycles | ≥15 MPa (ISO 13007) |
| Flexural Strength After Freeze/Thaw Cycles | ≥2.5 MPa (ISO 13007) |
| Respirable Crystalline Silica Fraction | <0.1% (SDS) |
| Packaging | 4 kg and 10 kg bags; boxes of 4 × 4 kg bags |
| Shelf Life | 12 months in original unopened packaging |