Poly Wrap™ roofing vapor retarders are available in stock sizes for immediate shipment and can be custom-manufactured to meet project specifications up to 200’ × 200’ (61 m × 61 m), significantly reducing in-field seams and minimizing potential failure points. For projects where building codes mandate fire-retardant vapor retarders, Reef Industries offers a range of fire-rated vapor barrier products that comply with NFPA 701 Large Scale “Standard Methods of Fire Tests for Flame-Retardant Textiles and Films.” Poly Wrap™ products hold a Class 1 / Class A Flame Spread Rating in accordance with UBC-42 and ASTM E-84 standards.