Skip Over Navigation




Renfrew Castle provides the lumber that covers your project from inside to outside. From the exterior wood siding, doors & windows, porch & deck materials to your finished interior trim, doors and hardwood floors, we provide quality lumber & related products, prompt delivery, great value and excellent service. Looking for lumber? Get a quote now, and get your project started! Shop online for all of the tools, fasteners and whatever else you may need for your next project.

  • Dimensional Lumber

    Dimensional Lumber

    We stock various grades of dimensional, pressure treated and untreated lumber ranging in size and species. (i.e. Cedar, Pine, Spruce, Fir, etc.)

  • Plywood


    Whether you're looking for plywood for your projects, or for sheathing for a house, we have a broad selection of Plywood and OSB to meet your needs. We also stock a range of Fire-Rated and FSC plywood.

  • Pressure Treated

    Pressure Treated

    Pressure treating helps wood withstand the elements and ward off insects and fungal decay. It can last 20 years or more. It's strong, cost-effective, visually appealing and is an excellent choice for outdoor projects.
  • Fences

    Decks & Fencing

    We carry a great selection of decking materials for your project. Whether your preference is cedar, treated or composite material, we have a variety of lengths and colours for you to choose from.

  • Lattuce


    Use lattice to finish a fence or skirt a deck, or hide HVAC units. Be creative and create a trellis to grow flowers, or add privacy to your yard with a screen. Check out Pinterest, find an image in a magazine. There are so many options!

  • Mouldings & Trim

    Mouldings & Trim

    Every detail is as important as the next, and we go to great lengths to ensure that it meets the highest standards for quality and design. Our mouldings and trim can be integrated into your ideas to achieve the look you are aiming for in your space!

  • Wood Siding

    Wood Siding

    Nothing makes your home look more welcoming and hospitable. Our wood siding lets you enjoy the benefits of natural wood with a low maintenance finish. It adds prestige and value to your home, and distinctive architectural details that complement your home's design.

  • Delivery


    At Renfrew Castle, we deliver what we sell to in Renfrew and surrounding Ottawa Valley. Depending on the size of the project we offer extended delivery to outside that range for a reasonable fee. Get a quote now!

Introducing Metrie Option {M}

Metrie Option M
ORA Award

Rebecca Wichers-Schreur, Renfrew Castle

Download our app today!

Google PlayApple Store

© 2014-2022 Renfrew Castle Building Centre Ltd.. All Rights Reserved.