Suppresses roof condensation. Ventilated, moisture-permeable waterproof underlayment "Air Gap Sheet."

One layer of ventilation space and waterproof sheet. From now on, roofing materials will not rust. The underlayment will not decay.

With easy installation, a ventilation layer of about 1 cm can be created between the roofing material and the sheathing board. Since a breathable waterproof sheet is used, moisture from the sheathing board and attic is expelled into the ventilation layer. By drying the materials around the roof, rust and decay deterioration are prevented. 【Features】 ■ Condensation Prevention The airflow in the ventilation layer averages 3 to 3.9 m/min. This flow rate is sufficient to expel humidity. The humidity on the north side of the sheathing in winter is reduced by an average of about 16%. It prevents condensation that can damage the roof. ■ Insulation Effect The ventilation layer also functions as an insulation layer. The temperature in the attic during summer was reduced by 5.2°C compared to roofs without a ventilation layer. It creates a roof structure that is cool in summer and warm in winter. ■ Easy Installation Performance No special tools are required, and it is lightweight with no stickiness. Additionally, there is little change in stiffness or expansion due to temperature, allowing for stable work throughout the year. ■ Excellent Pressure Resistance ■ Excellent Reliability ■ Excellent Durability This metal roofing-specific roofing material is chosen for higher-quality construction. "Air Gap Sheet" *For more details, please download the PDF or contact us.

Metal roofHeat-insulating and moisture-permeable roofingHeat Insulation Roofing