Proctor Air is an air and vapour permeable

The Roof Store is delighted to announce stocking Proctor Air®️. Proctor Air is an air and vapour permeable, highly water resistant roofing underlay. Its characteristics allow even very complex pitched roofs to breathe, without the need for air gaps or secondary venting.
The high performance meltblown core at the heart of Proctor Air allows natural air movement to ‘supercharge’ the passage of moisture vapour from the roofspace, making the formation of condensation in the roofspace virtually impossible.
•⁠ ⁠Vapour permeable
•⁠ ⁠Fully air permeable
•⁠ ⁠Highly water resistant
•⁠ ⁠Wind Uplift Resistance Complies with BS5534
•⁠ ⁠More uniform airflow than vents
•⁠ ⁠No VCL required
•⁠ ⁠15 year warranty
•⁠ ⁠BBA Certified