Installing Outdoor Tiles – What You Need to Know
Outdoor tiles can instantly elevate your garden, patio, or terrace — but getting the installation right is crucial for long-lasting results. Whether you’re planning a stylish BBQ area or a sleek balcony space, here’s everything you need to know before you start laying outdoor tiles.
1. Choose the Right Outdoor Tile
Not all tiles are suitable for exterior use. Outdoor environments demand tiles that are durable, slip-resistant, and weatherproof.
✅ Best Choice: 20mm porcelain tiles – frost-resistant, stain-proof, and non-slip
❌ Avoid: Glossy, indoor-only tiles or anything not marked as suitable for exterior use
Look for a R11 slip rating or higher to ensure safety in wet conditions.
2. Prepare the Base Properly
The key to a successful outdoor tile job is the base. A poorly prepared surface will lead to cracks, movement, and drainage issues.
🔹 Use a solid concrete base or a compacted hardcore + cement screed
🔹 Ensure proper fall (slope) to allow water runoff
🔹 Avoid wooden decking or soft surfaces underneath tiles
For raised patio systems, you can also use pedestals or adjustable supports with 20mm tiles.
3. Use the Right Adhesive & Grout
Interior adhesives won’t cut it outside. You’ll need high-performance products designed for external conditions.
✅ Recommended: Flexible outdoor adhesive + wide-joint grout or brush-in jointing compound
🔒 Waterproof and frost-resistant for year-round durability
Make sure your adhesive is suitable for porcelain tiles, which are dense and non-porous.
4. Expansion Joints & Drainage Are Critical
Outdoor conditions cause tiles to expand and contract. Ignoring this can lead to cracks and lifting.
🔹 Use movement joints (especially on large areas or where different surfaces meet)
🔹 Incorporate proper drainage channels or falls to prevent water pooling
Don’t grout tiles right up to a wall — always leave a movement gap.
5. Maintain Regularly
Porcelain tiles are low-maintenance, but regular cleaning ensures they stay looking new.
🧼 Hose down dirt and debris
🧽 Use a mild cleaner (avoid harsh chemicals)
🧊 Watch for moss or algae in shaded areas and clean promptly
Sealing is usually not required for outdoor porcelain, but natural stone tiles may need sealing.
Final Tip: Always Follow Manufacturer Guidelines
Every tile and adhesive brand has slightly different recommendations. Always check product data sheets and follow their advice for best results.
✅ Shop Outdoor Tiles at Tile Cart
Looking for high-quality outdoor tiles that last? Browse our full range of [Outdoor & Garden Tiles] and check out our [Pallet Deals] for unbeatable prices on 20mm porcelain slabs.
Need help choosing the right system or materials?
📧 Email us at sales@tilecart.co.uk or call 📞 07440 634 612 — we’re happy to assist.