Discover 5 architectural techniques that help design a cooler house, with thermal comfort and efficiency without relying solely on air conditioning.
Submitted at Sep 8, 2025, 5:00 PM
Gisele Taranto Architecture - Living Marambaia. Project of CASACOR Rio de Janeiro 2025. (André Nazareth)
Pedro Coimbra Arquitetura - Loft Joana. Concebido como um espaço dos sonhos para uma empreendedora de sucesso, independente e sofisticada, este loft tem espaço integrado, versátil e acolhedor. Áreas de autocuidado e bem-estar, quarto, banheiro e closet ganham protagonismo com detalhes delicados como o papel de parede desenhado por Dominique Jardy. Enquanto estar e cozinha garantem praticidade para receber e trabalhar. O mobiliário valoriza o design nacional em peças de Sérgio Rodrigues, Mula Preta e Gustavo Bittencourt e o uso da pedra gnaisse acrescenta uma estética escultórica ao ambiente. (André Nazareth/CASACOR)
Throughout history, various cultures have developed techniques to cope with high temperatures — from the internal courtyards of Arab houses to the brises of modern tropical architecture. Today, these solutions remain relevant and can be adapted to both new constructions and renovations.
Next, discover five architectural techniques that help create cooler, more comfortable projects integrated with the local climate.
Cross-ventilation is one of the most effective ways to keep the house naturally cool. It involves creating openings on opposite sides of the property — such as windows, doors, and casements — allowing the wind to enter from one side and exit from the other, renewing the air and lowering the internal temperature.
Projeto de Andrea Chicharo. (André Nazareth/Divulgação)
The correct positioning of these openings depends on analyzing the prevailing winds in the region. In warm climates, large windows facing the wind direction favor natural circulation, while elements like wooden shutters or perforated panels control the intensity of airflow without sacrificing privacy. This resource, in addition to improving thermal comfort, contributes to indoor air quality.
Controlling solar incidence is crucial to avoid overheating projects. The use of brises, awnings, balconies, muxarabis, or pergolas ensures protection against direct sunlight, especially on west-facing façades, which receive more sunlight in the afternoon.
Mauricio Nóbrega, Bia Wolf, Maria Estellita e Patricia Vieira - Estar na Varanda. Projeto da CASACOR Rio de Janeiro 2025. (André Nazareth/CASACOR)
These architectural elements act as filters that block excessive heat without preventing the entry of natural light. Besides their practical function, they can also become striking aesthetic elements on the façade, reinforcing the visual identity of the house. When combined with climbing plants or green curtains, they provide even more effective shading.
The roof is one of the points that absorbs the most heat in a residence. Therefore, thinking about smart solutions for this element is essential. Ventilated coverings, with a double layer of tiles and a space for air circulation between them, help to reduce heat transfer to the interior.
Visão de superior do telhado verde, no nível abaixo, um deck de madeira com uma piscina. (Projeto: Arhtur Casas/ Fernando Guerra/CASACOR)
Another alternative is the use of green roofs, which, in addition to mellowing the temperature, provide acoustic insulation and contribute to urban biodiversity. Light tiles, ceramic or reflective metal tiles are also effective, as they reduce the absorption of solar radiation. These solutions make the covering a strategic point for the thermal comfort of the house.
The thermal performance of a residence is directly linked to the materials chosen for the walls. Thick walls or those built with high thermal inertia materials, like solid bricks and concrete blocks, slow down the heat entry, keeping the interiors of projects cooler for longer.
Projeto de Patricia Martineza. (André Nazareth/CASACOR)
Moreover, using light coatings on façades helps reflect solar radiation. Another solution is the use of wood, bamboo, or natural fiber panels that, besides acting as thermal insulators, bring a welcoming and sustainable aspect to the architecture. In renovations, it is possible to apply thermal blankets or specific insulators to enhance the performance of existing walls.
Landscaping plays a crucial role in designing a cooler house. Strategically placed trees can shade windows and façades, reducing heat entry. Lawns, vertical gardens, and flowerbeds help lower the temperature in the surroundings, as green surfaces absorb less heat than rigid pavements.
Pedro Rabelais - Le Jardim. Projeto da CASACOR Rio de Janeiro 2025. (André Nazareth/CASACOR)
Additionally, water mirrors and fountains act as natural temperature regulators, cooling the air as the water evaporates. The use of climbing plants in pergolas and façades also creates a layer of green protection, effective against excessive heat. Thus, vegetation not only improves the microclimate but also enhances the quality of life for residents.
CASACOR Publisher is an exclusive content creator agent, developed by the CASACOR Technology team based on the knowledge base of casacor.com.br. This text was edited by Yeska Coelho.
