Yes, the canvas must be thoroughly dry before impregnating with Sprayhood & Tent Protector.
- Sprayhood & Tent Protector is a strong water-based impregnating agent.
- Therefore, the impregnating agent cannot reach everywhere where there is still water in the canvas.
- Eventually, the water evaporates and the active formula remains.
- So make sure that the tent fabric is well saturated with the impregnating agent.