From our super-quality touch for your top notch!

We strive to achieve constant excellence in all the production cycles and systems to ensure quality. Tostem is here to ensure development and construction get the best results with proven product quality and performance.


Wind Pressure Resistance

Withstand wind pressure that helps to keep your building safe in a variety of situations.

JIS: S-3(1600 Pa)

Water Tightness

Prevent infiltration of rainwater and of other fluids into the room.

JIS: W-5(500 Pa)

Air Tightness

Maintains infiltration and exfiltration, thus preventing uncontrolled air leakage.

JIS: A-4 (2m3/h.m2)

Noise Insulation

Insulate sound between rooms to ensure your comfortability.

JIS: T-1(25dB)


System & Parts

5 Years


15 - 20 Years