spacer Thermally Modified Decking|Tantimber|deck supplies-lumber|416-881-3325

Best Selection, Best Service, Best Pricing

If you are looking for a specific product and do not see it listed on our website please call or email us your enquiry. It is possible that we can special order it in.
We deliver across Ontario from Windsor to Ottawa and as far north as North Bay/Sudbury. Cross Canada Shipping is available; ask for details. Our drivers help you carry your order to the backyard or dock, otherwise it gets dropped at the curb.

TANTIMBER Installation, care and specifications guide

TANTIMBER Decking/Cladding Catalogue

Exterior Ash elevates outdoor projects by bringing the clean elegance of interior design to the outside world.

Tantimber exterior wood is manufactured using the most advanced technology in Europe. White Ash is dried to 0% moisture content in thermal chambers. Steam is added to stabilize the wood during the process. The final equalized moisture content is 5%. Heated to approx. 400 degrees using only heat and steam, with no chemicals. This rearranges the cell structure to reduce movement related to moisture, hence enhancing stability, becoming resistant to rot and decay as well. 

Use for: Decking, Handrails, Pickets, Cladding, Siding, Soffit, Facia, Fencing, Privacy Screens, Planter Boxes, Exterior Garden Furniture, Interior Feature Walls, Ceiling Paneling

  • Made from sustainable, renewable raw materials harvested in North America
  • Thermal modification process makes the wood less likely to warp, check, bow, cup or twist
  • All-natural, chemical-free thermal modification process
  • Easier on tooling and lighter than IPE
  • Non-toxic dust
  • Low Maintenance
  • Class 1 durability rating
  • End Matched
Thermally modified ash deck boards


Tantimber TMT Ash Decking products offer a wide range of profiles that can be used comfortably in extensive pedestrian traffic areas such as pool sides, public areas, shopping malls, lanscaping, etc.

A smooth or brushed finish; fasten with hidden fasteners.

The Biological Life is a Minimum 25 years.

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Main Showroom/Head Office: 4745 8th Line, Beeton (New Tecumseth), ON L0G 1A0 416-881-3325 or 1-866-765-2935

Toronto East Showroom:  25 Salome Drive, Unit 3, Toronto, ON M1S 2A7 416-609-8100

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