Radiant Floor Heating Inspection

Radiant tubing must be pressure tested before concrete pour or subfloor installation. Layout must match design. Manifold accessible.

1. Verify pressure test was performed before covering tubing (should maintain pressure for 24 hours)

2. Check manifold location — must be accessible for service

3. Verify tubing spacing matches design (typically 8-12" on center)

4. Check that tubing is properly secured (no floating or shifted sections)

5. Test system operation — all zones should heat evenly

6. Check surface temperature — should not exceed 85°F (29°C) for most flooring

7. Verify thermostat controls each zone independently

8. Check for proper insulation below tubing (prevents downward heat loss)

- No pressure test before covering (can't find leaks after concrete is poured)

- Tubing spacing too wide (cold spots)

- Manifold not accessible (can't service or adjust)

- Surface temperature too high (damages wood flooring, uncomfortable)

- No insulation below (heat goes down instead of up)

- Zone control not working (can't adjust room by room)