Breathable Waterproof Membrane Synthetic Roofunderlayment Roof Felt

Breathable Waterproof Membrane Synthetic Roofunderlayment Roof Felt. Breathable Waterproof Function: Micro-porous structure allows vapor discharge while blocking liquid water and rain. High Energy Efficiency: Reduces HVAC energy costs by up to 40% compared to buildings without the membrane. Mold and Mildew Prevention: Rapid vapor discharge prevents condensation, protecting structure from mold and damp. Cost Reduction: Eliminates need for fine stone concrete or additional protective layers, lowering project costs. Flame Retardant: Meets national standard B2 level for flame retardant performance. Eco-Friendly Material: Made from 100% recyclable PE+PP materials, ensuring green environmental protection. Custom Color Available: Offers customizable color options to meet specific project aesthetic requirements.