comScore
CASACOR
CASACOR Explains

What is zenithal lighting? Discover the advantages for projects

Zenithal lighting becomes part of architectural language, combining functionality, aesthetics and sustainability.

By CASACOR Publisher

Submitted at Sep 10, 2025, 11:00 AM

08 min de leitura
BD Architecture - Living of Acceptance.

BD Architecture - Living of Acceptance. (Felipe Araújo)

The zenith lighting is an architectural solution that favors the entrance of natural light through openings positioned in the ceiling or covering of the projects. Unlike conventional windows, this type of resource takes advantage of the solar position more directly and uniformly, illuminating the space from top to bottom. The result is an atmosphere that transforms throughout the day, following the intensity and movement of natural light.
Migrating House, by João Panaggio. Projects of CASACOR Rio de Janeiro 2022.

Casa Migrante, por João Panaggio. Projeto da CASACOR Rio de Janeiro 2022. (André Nazareth/CASACOR)

More than functional, zenith lighting has become a aesthetic and sustainable element in contemporary architecture. Projects that adopt this technique offer greater connection with the external projects, reduce the need for artificial lighting, and provide well-being for the residents. Whether in homes, offices, or cultural spaces, it is a choice that unites efficiency, beauty, and environmental awareness.

What is zenith lighting?


The concept of zenith lighting is directly linked to the strategic use of natural light as the protagonist of the projects. To achieve this, architects and designers use openings in roofs — such as skylights, sheds, domes, or lanterns — which allow a controlled entrance of light throughout the day. The term "zenith" comes precisely from the "zenith", the highest point in the sky, highlighting the relationship with the sun in its vertical position.
Caio Bandeira and Tiago Martins (Architects+CO) - Kalai Lounge. Project of CASACOR Bahia 2023.

Caio Bandeira e Tiago Martins (Architects+CO) - Kalai Lounge. Projeto da CASACOR Bahia 2023. (Gabriela Daltro/CASACOR)

In addition to providing abundant brightness, zenith lighting enhances the perception of volume, depth, and movement in the project. The light entering through the ceiling creates subtle scenic effects, highlighting textures, colors, and constructive elements in a unique way. Thus, the technique goes beyond practical function and assumes a central role in the sensory character of architecture.

Advantages of zenith lighting


Choosing zenith lighting in architectural projects offers benefits that go far beyond aesthetics. Among the main ones is the energy savings: with greater input of natural light, there is less need for artificial lighting during the day. This reduction in energy consumption aligns with sustainable practices, increasingly present in architectural solutions.
Milcent Architecture - Deca Refuge. CASACOR Bahia 2023 Project.

Milcent Arquitetura - Refúgio Deca. Projeto da CASACOR Bahia 2023. (Tarso Figueira/CASACOR)

Another positive point is the impact on well-being. Projects bathed in natural light stimulate the balance of the biological clock, promote greater disposition, and reinforce the feeling of vitality. In homes, this quality translates into more comfort for the residents. In offices, it can increase productivity. And in cultural spaces, it intensifies the experience of visitors by highlighting artworks and architectural volumes.

Care when designing zenith lighting


Despite the many advantages, zenith lighting requires specific care to ensure comfort and functionality. The first is the control of solar incidence. Without filters or protective elements, the entry of light can generate excessive heat or glare. Therefore, the use of special glasses, films, blinds, or shading elements is essential to balance the effects of light.
Sabine Rosas Architecture - Saravá. Project of CASACOR Bahia 2023.

Sabine Rosas Arquitetura - Saravá. Projeto da CASACOR Bahia 2023. (Tarso Figueira/CASACOR)

Another important care is waterproofing and correct sizing of the openings. Since these structures are exposed on the ceiling, they need to be well-executed to avoid leaks and ensure durability. The planning should also consider the solar orientation of the building, adjusting the positioning of the openings according to the sun's path throughout the year.
loft; natural light; decoration; casacor peru

Projeto de Diego Oliveira. (Divulgação/CASACOR)

CASACOR Publisher is a content creation agent, developed by the CASACOR Technology team based on the knowledge base of casacor.com.br. This text was edited by Yeska Coelho.