1. What is GLEAN Porcelain Tile Pre-Grout Protector?
GLEAN Porcelain Tile Pre-Grout Protector is a professional-grade, water-based pre-grout sealer designed to protect porcelain tiles and slabs from stains caused by grout, cement, grouting compounds, and organic matter such as rotting leaves. It forms an invisible, breathable barrier that prevents staining without altering the natural look or texture of your tiles — keeping them clean and pristine during and after installation.
2. Why should I use a pre-grout protector?
Applying a pre-grout protector before grouting helps prevent stubborn stains and discolouration caused by grout haze, cement residue, and organic debris. It ensures your tiles stay spotless during installation and makes post-grouting cleaning significantly easier.
3. What surfaces can it be used on?
GLEAN Porcelain Tile Pre-Grout Protector is suitable for:
• All types of porcelain tiles and slabs (matt, polished, or textured finishes)
• Porcelain paving and patio tiles
• Interior and exterior porcelain surfaces
It’s especially effective on low-porosity porcelain where grout and cement can easily leave residues.
4. How does GLEAN Porcelain Tile Pre-Grout Protector work?
The advanced water-based formula penetrates the surface to create a non-film forming, invisible barrier that repels water, cement, and dirt. This barrier prevents grout and organic materials from bonding to the tile surface while allowing the tile to breathe — ensuring long-lasting, natural protection.
5. Is the protection visible?
No. GLEAN Porcelain Tile Pre-Grout Protector provides invisible protection that does not change the appearance, sheen, or colour of your tiles. The finish remains natural, with no glossy or coated look.
6. Can it be used both indoors and outdoors?
Yes. This versatile protector is suitable for interior and exterior use, offering the same level of durable stain protection whether applied in kitchens, bathrooms, patios, or outdoor entertaining areas.
7. How do I apply GLEAN Porcelain Tile Pre-Grout Protector?
Preparation:
Ensure the surface is completely clean, dry, and free from any residues. For best results, clean thoroughly using GLEAN Heavy Duty Floor & Stone Degreaser, rinse well, and allow to dry.
Application:
1 Shake the bottle before use.
2 Apply evenly using a broad brush, foam roller, or light-pressure sprayer.
3 Allow to dry for 30 minutes, then apply a second coat.
4 Leave to cure for at least 1 hour before grouting or pointing.
5 Once the grout is dry and residues are removed, a final coat may be applied, covering the joints as well.
8. How much coverage can I expect?
Coverage depends on the porosity of the surface, but typically:
Up to 30m² per litre on low-porosity porcelain tiles.
For textured or highly absorbent surfaces, additional coats may be required for maximum protection.
9. Is it safe and environmentally friendly?
Yes. GLEAN Porcelain Tile Pre-Grout Protector is a water-based, low-VOC formula, making it safer for the user and the environment compared to solvent-based alternatives. It’s ideal for use in enclosed or ventilated areas.
10. Does it affect tile adhesion or grout bonding?
No. The non-film forming formulation allows grout to bond effectively while protecting the tile surface from staining. It does not interfere with tile adhesion or grout curing.
11. What are the key benefits of using GLEAN Porcelain Tile Pre-Grout Protector?
• Prevents stains from grout, cement, and organic matter
• Invisible, non-film forming finish that preserves natural appearance
• Water-based, breathable, and environmentally safer
• Simplifies post-grouting cleaning
• Suitable for interior and exterior use
• Ideal for porcelain tiles and slabs
• Easy to apply with fast-drying results
12. How should I store the product?
Store in a cool, dry, frost-free place. Keep the container tightly closed when not in use, and protect from direct sunlight. Always keep out of reach of children.
13. What sizes are available?
GLEAN Porcelain Tile Pre-Grout Protector is available in 1 litre and 5 litre containers — ideal for both small home projects and large-scale professional installations.
14. Is GLEAN Porcelain Tile Pre-Grout Protector made in the UK?
Yes — all GLEAN cleaning, sealing, and protection products are proudly made in Great Britain, ensuring high performance, premium quality, and reliable results every time.
