Both are premium wood decking categories. They occupy different niches in the spec.
Where They Overlap
Both deliver 25+ year exterior lifespans, both can be installed grooved or S4S, both develop a silver patina if not oiled, and both use stainless fasteners.
Where They Differ
| Thermally Modified | Tropical Hardwood | |
|---|---|---|
| Hardness | Medium | Very high |
| Weight | Lighter | Heavy |
| Lifespan ceiling | 30 yrs | 75 yrs (Ipe) |
| Sustainability docs | EPD common | FSC common |
| Cost | $ | $$ |
How to Choose
Thermally modified when you want a domestic source and easier handling. Tropical hardwood when you want the longest possible life and the densest, hardest surface.
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