NBR 15575: What You Need to Know About Habitability Requirements for Buildings

Hello, Weiku community! How are you?
Today, let’s talk about NBR 15575 — the standard that defines essential criteria for comfort, safety, and durability in residential buildings. Discover the key requirements that make all the difference when choosing your new home in today’s post.

NBR 15575 is the standard that defines the performance of residential buildings, highlighting essential features to ensure comfort, accessibility, hygiene, stability, durability, structural safety, and fire protection. These aspects are crucial when assessing the quality of a property and have a direct impact on long-term customer satisfaction.
Weiku do Brasil manufactures window and door systems that fully comply with this standard, ensuring that its products meet the highest quality and performance standards required by the market.

On Its Importance

The NBR 15575 standard aims to ensure that residential buildings meet users’ needs throughout the entire service life of the property. It involves all stakeholders in the construction process — designers, material suppliers, builders, developers, and clients — and sets strict criteria that must be followed from the design phase through to the building’s continued use.

Structure of NBR 15575

NBR 15575 is composed of six parts, each focused on a specific aspect of construction:

Part 1 – General Requirements:

Part 2 – Structural Systems:

Part 3 – Flooring Systems:

Part 4: Requirements for Internal and External Vertical Sealing Systems (SVVIE)

Part 5 – Roofing Systems

Part 6: Requirements for Hydrosanitary Systems

Habitability Requirements

Habitability requirements are essential to ensuring residents’ quality of life. NBR 15575 defines seven main requirements:

1. Water Tightness

Water tightness is crucial to prevent moisture-related issues that can lead to mold, respiratory illnesses, and structural deterioration. The standard sets watertightness criteria for façades, wet area floors, roofing, and hydrosanitary installations, protecting against both water accumulation and splashes.

2. Thermal Performance

Thermal comfort directly impacts residents’ quality of life and the energy efficiency of the property. NBR 15575 focuses on thermal performance under natural conditions, taking into account sunlight exposure, ventilation, and other environmental and construction-related factors.

3. Acoustic Performance

Acoustic insulation is essential to minimize the impact of external and internal noise, ensuring a peaceful environment. The standard specifies insulation levels for various building components, such as façades, roofs, and walls.

4. Lighting Performance

Proper lighting, both natural and artificial, is crucial for well-being and the functionality of spaces. NBR 15575, together with NBR 5413, defines the required lighting levels for various activities and types of buildings.

5. Health, Hygiene, and Air Quality

The standard requires buildings to maintain acceptable levels of particulate matter, microorganisms, and toxic gases, as well as proper sanitation conditions, preventing infiltration and contamination by insects and rodents.

6. Functionality and Accessibility

Adequate and accessible spaces are essential for a positive user experience. NBR 15575 defines minimum dimensions for rooms, ceiling height, and other aspects that ensure the functionality and accessibility of the property.

7. Tactile and Anthropodynamic Comfort

The standard sets criteria to ensure tactile comfort, such as the shape and force required to operate devices, and anthropodynamic comfort, such as floor deformability and ramp slope, taking into account ergonomics and users’ physical abilities.

With the implementation of NBR 15575, Brazilian residential buildings now follow clear and rigorous performance criteria, ensuring they are safe, comfortable, and durable.

Since it came into effect in 2013 and was updated in 2022, this standard has proven essential for maintaining high-quality construction, respecting the rights of property owners and society as a whole.

Weiku do Brasil is always attentive to market demands to ensure high-quality production that complies with all Brazilian standards, promoting safer construction. Window and door systems play a crucial role in meeting the requirements of NBR 15575, and Weiku — committed to excellence — manufactures systems that not only meet but often exceed the rigorous criteria established by the standard.

Our goal is to deliver quality and a true comfort experience to our clients. Visit our website and follow us on social media to stay up to date with our projects and innovations.