Flagstone installER

Alterra Landscaping is your premier Flagstone Installer. Flagstone, a natural stone, offers unmatched beauty and a luxurious ambiance. At Alterra, we specialize in crafting beautiful flagstone walkways, patios, and porch installations. Immerse yourself in the timeless allure of flagstone, creating an inviting pathway or an elegant outdoor space. But our commitment doesn't end there – we also provide flagstone repair services, addressing any cracks or loose stones to ensure your installation stands the test of time. Trust Alterra for a seamless blend of nature's beauty and expert craftsmanship in every flagstone project we undertake.


  • 10+ experience installing flagstone
  • 3+ year warranty
  • Competitive pricing
  • Registered with WSIB
  • More than 50 happy clients with beautiful flagstone around their homes

Happy Clients with beautiful flagstone

Alex was in constant communication with us and started when he said he would. Raslun did all the stone work and was fantastic. You can tell he loves his craft. His brother Ramzi removed the old material and did the joints. It was tough to remove. Extremely hard working crew and did everything they could to complete the job with quality and speed. It took 5 days in total but was worth it. Courteous and clean.
These guys did an outstanding job installing a flagstone walkway around our house. Alex was very careful to install and make sure that the work would be as weatherproof as possible given our Canadian winters. Would recommend them to anyone. Would use them again .... Clearly.

Featured project - porch with flagstone

Our Process

Consultation and Free Estimate
Our process begins with a detailed consultation to understand your vision, requirements, and budget. We discuss your ideas and provide a detailed estimate – no strings attached!

Planning & Design
Our experienced team collaborates with you to create a design that perfectly matches your home and lifestyle. If needed, permit applications are discussed and prepared.

Material Selection:
We provide a wide selection of materials, allowing you to choose the perfect type, color, and texture of your flagstone

Installation and Construction:
Our skilled craftsmen will meticulously install flagstone, ensuring it's not only visually stunning but also structurally sound and built to last.

Frequently asked questions

How is a flagstone installed?
We excavate the soil, add hard rock and screening, form and pave concrete, and finally install flagstone with cement underneath for a secure, durable finish.

What types of flagstone are available, and how do they differ?
We offer random flagstone, known for its variety in color and cost-effectiveness, and calibrated flagstones with uniform shapes, making installation easier. Choose based on your preferences and needs.

How are gaps between flagstones handled in the installation process?
To ensure stability, we fill gaps with cement or polymeric sand, providing a secure and visually appealing finish to your flagstone walkway or patio.
Fill in the form below and our specialist will contact you shortly. We will be able to estimate better your project if you mention the type of work (driveway, patio, retaining wall, etc) as well as any other details
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Areas we cover:

King City
East Gwillimbury
Richmond Hill