Choosing the Right Aluminium Tile Edging for Outdoor Projects

When working with 20mm outdoor porcelain tiles, finishing details matter just as much as the tile itself. A well-chosen aluminium tile trim not only enhances the look of your installation but also protects exposed tile edges from damage, moisture, and wear.

In this guide, we’ll walk through the most popular types of aluminium tile edge trim profiles for outdoor use — including their applications, advantages, and finish options — to help you find the right profile for your project.

Why Use Aluminium Tile Trims Outdoors?

Outdoor environments expose tiled surfaces to weather, temperature shifts, foot traffic, and potential impact. That’s where aluminium ceramic tile edging strips come in:

• Protect tile edges from chipping and cracking
• Prevent moisture ingress into grout lines or substrates
• Improve safety on steps or elevated surfaces
• Create clean, professional finishes
• Enhance visual contrast or blending with tiles

All our external tile edge trim profiles are designed to work with 20mm thick outdoor porcelain tiles, which are commonly used in patios, terraces, steps, and balconies.

Types of Aluminium Tile Edge Trims

1. L-Shape Aluminium Tile Trim

A classic and versatile option, the L-shape tile edge trim is ideal for finishing external corners, exposed edges, or perimeter transitions.

• Provides a clean, straight edge
• Prevents tile edge damage
• Suitable for vertical or horizontal use
• Sleek and minimal appearance

✔ Available in mill finish, bright silver, black, and granite effect.

Shop Aluminium L-Shape Tile Corner Trim — 2.5m (for 20mm tiles)

2. Square Edge Aluminium Tile Trim

Looking to make a bolder design statement? The square tile edging strip features a 10mm top face that enhances definition and contrast.

• Great for contemporary or architectural spaces
• Adds a strong visual line
• Ideal for tile perimeters or as a decorative feature
• Offers the same edge protection with added impact

✔ Available in the same durable finishes for design flexibility.

Shop Aluminium Square Edge Tile Trim — 2.5m (for 20mm tiles)

3. Step Edge Aluminium Tile Trim

For stairs, steps, or raised tiled platforms, safety is key. The step edge profile includes an integrated anti-slip groove for extra grip.

• Designed for outdoor stair treads
• Grooved surface reduces slip risk
• Protects tile risers and joint edges
• Improves drainage and water resistance

✔ Powder-coated and anodised finishes ensure long-term durability.

Shop Aluminium Step Edge Tile Trim — 2.5m (for 20mm tiles)

4. Stainless Steel L-Shape Tile Trim

For projects that demand both premium finish and long-term durability, the stainless steel L-shape tile corner trim offers a sleek and modern solution. While typically used for edge protection, it also doubles as a decorative element when used creatively in layouts or transitions.

• High-end, reflective finish for luxury outdoor settings
• Offers the same clean edge protection as aluminium
• Ideal for exposed edges, step fronts, or perimeter highlights
• Corrosion-resistant — perfect for coastal or wet environments
• Can be used as a subtle feature strip between tile zones

✔ Available in brushed and polished stainless steel finishes for modern and architectural projects.

Shop Stainless Steel L-Shape Tile Trim — 2.5m (Brushed/Polished)

Available Finish Options

Our aluminium and stainless steel outdoor trims are available in a range of stylish and hard-wearing finishes:

• Mill Finish – Natural, untreated aluminium for a raw, industrial look
• Bright Silver – Sleek, reflective finish for modern aesthetics
• Brushed Silver – Brushed texture, reminiscent of real metal
• Powder-Coated Black – Matte black for dramatic contrast
• Powder-Coated Granite Effect – Stone-look finish for natural design schemes
• Stainless Steel (Brushed or Polished) – High-end, corrosion-resistant finish ideal for modern and coastal projects

Which Tile Trim Should You Choose?

Project Type	Recommended Trim	Key Feature
Patio / Balcony Edge	L-Shape or Square Edge	Clean finish, edge protection
Outdoor Steps / Stairs	Step Edge Profile	Anti-slip surface, added safety
Feature Line / Contrast	Square Edge or Stainless Steel L-Shape	Visual accent or tile break
Rustic/Natural Look	Any profile in Granite Effect	Natural finish for blending

Final Thoughts

Whether you're installing a patio, building outdoor steps, or adding detail to a tiled terrace, the right tile edge trim makes a huge difference — not just in performance, but in aesthetics too.

From L-shape trims to step edge profiles, our range of 20mm outdoor tile edging is built to protect your tiles and enhance your project with a professional, lasting finish.

Shop the Full Range

Explore all outdoor 20mm porcelain tile edging in our 20mm Tile Trim Collection, available in a wide selection of profiles and finishes to suit any outdoor installation.