Glossary

Backdraft means air that should be exhausted outdoors flows back indoors due to strong outdoor wind pressure, poor duct conditions, or insufficient outlet design.

Backdraft can affect exhaust stability and may bring outdoor odor, moisture, or duct odor back indoors. It is a common issue in bathrooms, kitchens, and spaces that need stable exhaust.

Exhaust efficiency refers to how effectively an exhaust system can move indoor air outdoors in the actual installation environment.

The airflow value on a product label may not equal real site performance. Long ducts, too many bends, strong wind at the outlet, or poor exterior exhaust conditions may reduce actual performance.

Ventilation rate or exhaust airflow means the volume of air entering or leaving a space per unit of time. A common unit is m³/h.

It is an important reference for equipment selection, but it should be reviewed together with room size, duct route, make-up air, and installation conditions.

Duct termination is the final outlet of an exhaust duct, usually the visible exhaust outlet on an exterior wall.

It is the part of the exhaust system most affected by outdoor weather. Strong wind, slanted rain, odor return, and unstable exhaust can occur here if the outlet design is insufficient.

An electromagnetic damper is a damper mechanism that opens and closes automatically with equipment operation. It opens when the equipment runs and closes when the equipment stops.

It helps reduce outdoor odor, strong wind backdraft, and humid air returning through the duct. It is especially useful for bathrooms affected by wind pressure or duct odor.

PM2.5 refers to fine particulate matter with a diameter of 2.5 micrometers or smaller. It may come from traffic, combustion, industrial emissions, road dust, and urban air pollution.

If a home is near roads or dusty areas, PM2.5 and airborne particles entering through open windows may need to be considered.

Airborne particles are small particles floating in the air, including dust, pollen, combustion particles, road dust, and other fine pollutants.

They may not always be visible, but they can affect window-side dust, cleaning frequency, and the feeling of indoor air after windows are opened.

Air quality refers to the overall condition of air, including dust, airborne particles, odor, humidity, and ventilation status.

Modern homes are not only concerned with daylight and ventilation, but also with the quality of air entering indoors when windows are opened.

Natural ventilation uses windows, openings, wind direction, and pressure difference to move air without mechanical equipment.

Many homes still need window ventilation, but open windows may also bring dust, pollen, and airborne particles indoors. Anti-smog window screens are evaluated as a balance between ventilation and filtration.

Electrostatic adsorption uses the electrostatic effect on fiber surfaces to help capture fine particles. It often works together with physical filtration rather than relying only on pore size.

It can help a screen maintain a degree of airflow while improving the ability to capture smaller particles.

Bathroom ventilation uses mechanical equipment to exhaust moisture, odor, and stale air while allowing replacement air to enter.

Bathrooms are among the most humid spaces in a home. Poor ventilation may lead to odor, slow drying, moldy smell, and reduced equipment life.

110V and 220V are power supply voltage specifications. They affect power configuration, current load, and site wiring planning.

For Bathroom Heater Fans and Bathroom Exhaust Fans, voltage selection affects wiring, dedicated circuit planning, wire size, and leakage protection.

Self-healing materials are material systems that can produce further repair action for cracks or small damage under specific conditions.

Traditional waterproofing often acts as passive protection. Self-healing materials focus more on whether the material system can help close cracks and maintain water tightness after cracks appear.

Crack repair refers to reinforcing, filling, or repairing cracks in concrete, walls, or other building surfaces.

Cracks can become entry paths for water, chloride ions, and other harmful substances. Different crack types require different materials and treatment methods.

Water tightness is the ability of a material or structure to reduce continuous water entry or movement through cracks, pores, joints, or weak paths.

Water tightness is not only about surface coating. It is also about whether the structure can maintain stable resistance to water over time.

A waterproofing membrane is a water-resistant barrier applied to a building surface to reduce water movement into or through the structure.

A waterproofing membrane is an important defense against moisture and leakage. However, if substrate cracks or water paths remain, surface waterproofing alone may not be enough.

Crystalline waterproofing uses active ingredients to form crystals within pores and capillaries of concrete or cement-based materials, helping reduce water penetration.

It is often discussed together with self-healing waterproofing systems, but the two are not exactly the same. Understanding the difference helps compare Basilisk with traditional waterproofing materials.

A steam generator produces steam by heating cold water, then sends steam through a steam pipe to the steam outlet inside the steam room.

It is the core equipment of a steam room system. Planning should consider power, unit size, location, cold water supply, steam piping, control panel, and maintenance access.

A steam room uses a steam generator to create a warm and humid environment. It is different from a regular shower area and from dry sauna heat.

A steam room is not completed by installing a steam generator alone. The room should be suitable for high humidity, have proper drainage, and reduce steam leakage at the door.

A steam pipe connects the steam generator to the steam outlet inside the steam room. It carries high-temperature steam and requires careful material and routing planning.

Steam pipe design affects steam delivery, safety, outlet smoothness, and operating sound. If pipe diameter is too small or routing is not suitable, steam delivery and use experience may be affected.

The steam outlet is where steam enters the steam room from the steam pipe. Steam enters the room through this point and gradually creates a warm, humid environment.

The outlet position affects safety, comfort, and drainage planning. It should be evaluated based on room size, use habit, drain position, and safety distance.

A dedicated circuit is an electrical circuit used by one specific device only. A steam generator is a high-power device and must use a dedicated circuit.

A steam generator should not share a circuit with lighting, outlets, heater fans, exhaust fans, or other appliances. Insufficient electrical planning may cause overload, power trips, or safety risks.

Wire gauge refers to the cross-section size of an electrical conductor. It affects how much current the wire can safely carry.

Incorrect wire size may affect electrical safety. Steam generator wiring should be evaluated by qualified electrical professionals based on equipment specifications and site conditions.

Maintenance access is an opening reserved for future inspection, maintenance, or equipment removal. It is important when a steam generator is installed above the ceiling, inside a cabinet, or in a concealed space.

A steam generator should not only fit into the space; it must also remain serviceable. If the unit is fully sealed or the access panel is too far away, future maintenance becomes difficult.

A control panel is the user interface for starting, stopping, or setting the steam generator. It connects to the steam generator through signal wiring.

It should not be installed directly above the steam outlet, where direct steam, moisture, and heat may affect the panel. The position should be easy to operate, less exposed to moisture, and compatible with wiring.