Technical Deep-Dive: Sub-Floor Drainage for Zero-Threshold Sliding Systems.
- The Window Company

- Apr 22
- 1 min read
Achieving a seamless interior-to-exterior transition in luxury Ontario builds requires more than a recessed track; it demands sophisticated hydrostatic pressure management.

When specifying ultra-slim systems like Reynaers Hi-Finity, success depends on the sub-sill drainage strategy:
1. Pressure-Equalized Drainage: Using the Rainscreen Principle to evacuate water faster than wind pressure can drive it inward.
2. Thermal Bridge Mitigation: Managing the interface between the exterior drainage channel and the interior heated slab to prevent condensation.
3. Waterproofing Integration: Precise coordination between window installers and waterproofing trades to maintain a continuous air and water barrier.
At The Window Company, we specialize in the technical details that ensure minimalist design performs in Ontario’s extreme weather. We work with architects to ensure 'zero-threshold' never means 'zero-protection.'

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