Flat roofs in residential buildings are directly exposed to sunlight and typically cover a large surface area. As a result, during the summer, they receive an intense amount of solar radiation — absorbing heat quickly but releasing it very slowly. This makes flat-roof houses significantly hotter and more stifling compared to other types of buildings.
Flat-roof houses are particularly susceptible to water seepage, which often causes stains and damp patches on walls. Over time, this not only affects the building’s appearance but also makes repairs and waterproofing extremely challenging. The larger the roof area, the higher the risk of leakage due to thermal expansion and contraction when the weather changes.
During rainy seasons, flat roofs also tend to accumulate debris such as leaves and sand, leading to slow drainage because of their low slope design.
Therefore, finding an effective heat- and waterproofing solution for flat-roof houses is essential. It helps homeowners maintain a comfortable living space while significantly reducing electricity consumption for cooling.
There are many ways to reduce heat for flat-roof houses, but not all of them deliver high efficiency at a reasonable cost. Below are some effective solutions you can consider:
Insulated panel sheets can be used as ceiling or roofing materials to effectively block heat. Each insulated panel consists of three layers — two outer layers of galvanized steel and a core layer made of PU, EPS, or glass wool. This structure significantly limits heat absorption and heat release through the roof surface, with a heat reflection rate of up to 80%.
As a result, insulated panels help reduce heat transfer, minimize thermal radiation, and lower indoor temperatures compared to the outside environment — creating a cooler and more comfortable living space.
The advantage of using panels for heatproofing flat-roof houses is that the construction time is fast. The lifespan of the panels is up to 50 years. They are waterproof and mold-resistant for the ceiling. Panels are light, so they reduce the load for the building. Therefore, they help homeowners save maximum costs.
One advantage that only the heatproofing method using panel ceilings brings is the aesthetics of the building. When using panels, homeowners can still plant trees on the terrace without losing space like other heatproofing methods such as metal roofs, tile paving, or building swimming pools.
In addition to heat insulation, panel ceilings also have fire resistance and soundproofing ability while still ensuring the aesthetics of the building. They are suitable for constructions with modern styles.
Adding an extra roof is considered a solution chosen by many homeowners today. Accordingly, you can choose one of the following ways:
Tiled roof: Tiles are considered a material chosen by many people to heatproof flat roofs because they are cheap and relatively effective.
Using heat-insulating bricks: The bricks used for roof heatproofing are usually 8-hole hollow bricks or U-shaped bricks. This type of brick can be laid directly on the concrete surface, and the top can be plastered with mortar and tiled with terracotta or ceramic tiles. The hollow holes in the brick help reduce heat absorption into the roof.
Adding corrugated metal sheets: Corrugated roofs are made of a supporting frame (rafters or beams to shape and hold the roof) and the roofing sheets. Adding an extra corrugated roof above is one of the commonly used solutions today.
If you do not have a garden due to limited space, planting trees on the terrace is a method you should not ignore. Green trees provide shade, regulate the air, and help block solar radiation, making the temperature inside the house cooler. In addition, you can also grow your own clean vegetable garden on the roof without having to buy vegetables at the market.
However, if you want to plant trees on the terrace, you need to design an access way for easy care and watering. It is necessary to create a drainage system to prevent water from seeping down to the ceiling.
Designing a water tank or swimming pool on the roof is very suitable for buildings with large areas. It helps to reduce heat for the roof very effectively. However, the investment cost is very high, and there must be an effective waterproofing plan. In addition, it is necessary to design a water supply and drainage system for convenient cleaning and water replacement.
With the principle of using water vapor to create humidity and reduce heat for flat-roof houses, the mist cooling system is considered a quick, simple, and highly effective solution. Besides, the investment cost for a misting system is quite reasonable and suitable for many families. You can also take advantage of this space to grow flowers and ornamental plants to create a green natural landscape that is regularly moisturized.
The limitation of this method is that you need to pay attention to waterproofing the ceiling to keep the building durable over time.
Panel Home is a leading company specializing in providing and installing high-quality insulated panels for roof heatproofing at the most reasonable prices on the market today. At Panel Home, customers can choose the most suitable type of insulated panel for their project with the most cost-effective solution.
Below are some types of insulated panels used for roof heatproofing at Panel Home for customers to refer to:
In addition, we are also a reputable panel installation contractor in the Northern region. Panel Home has a team of well-trained and dedicated technical staff. With more than 13 years in the market, we have completed thousands of heatproofing projects and received absolute satisfaction from our customers.
Moreover, our products and services come with a long-term warranty policy, ready to handle even the smallest issues that may arise during construction.
We hope that the flat-roof heatproofing solutions shared by Panel Home above will provide homeowners with useful information, helping to create a cooler living space and ensure the best health for all family members.
If you are still unsure about which solution to choose, please contact us at:
📞 0989 149 859
or visit us directly at No. 196 Vinh Khang Street, Ngoc Hoi, Thanh Tri, Hanoi for free consultation and support!
Công ty sản xuất panel cách nhiệt uy tín với chi phí hợp lý luôn là sự quan tâm hàng đầu đối với khách hàng hiện nay. Nhà máy sản xuất panel đến từ công ty Panel Home Vina là hệ thống nhà máy chất lượng tiên tiến, hiện đại trong ngành sản xuất nguyên vật liệu xây dựng. Chúng tôi là đơn vị phân phối panel EPS, panel PU, panel bông thủy tinh, panel bông khoáng (từ vách trong, vách ngoài đến panel mái) uy tín nhất tại Hà Nội.
Công ty sản xuất panel cách nhiệt uy tín với chi phí hợp lý luôn là sự quan tâm hàng đầu đối với khách hàng hiện nay. Nhà máy sản xuất panel đến từ công ty Panel Home Vina là hệ thống nhà máy chất lượng tiên tiến, hiện đại trong ngành sản xuất nguyên vật liệu xây dựng. Chúng tôi là đơn vị phân phối panel EPS, panel PU, panel bông thủy tinh, panel bông khoáng (từ vách trong, vách ngoài đến panel mái) uy tín nhất tại Hà Nội.
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