Effective ways to protect corrugated iron roofs from heat in the summer | Materials | Finance

1. Principle of heat insulation of corrugated iron roofs

1.1 Limit direct sunlight into the house

The first principle when heat-proofing a metal roof is to limit direct sunlight into the house. Instead of using air conditioning continuously to cool down and "fight" the heat, you should proactively find ways to block sunlight from entering the house. This principle is fundamental in the heat-proofing process, for example, sitting under a tree will be cooler than sitting outside in the sun.

1.2 Equip/Upgrade heat-resistant materials

Roofing sheets are metal so they have high thermal conductivity, if you want to limit this, you need to equip or upgrade materials with heat insulation properties. Currently, on the market there are many materials that help to effectively prevent heat for roofing sheets such as roofing sheets, foam, roof insulation sheets to prevent heat...

1.3 Increase ventilation

Finally, it is necessary to increase the ventilation capacity in the house by making skylights, ventilation pipes or arranging swimming pools, fish ponds... in the house. This principle not only affects the roof area but also has significance for the whole house.

2. 17 ways to prevent heat for corrugated iron roofs that can be applied right at home

Our country has a hot and humid climate, especially in the summer the temperature is very high. This heat level greatly affects the health of people in the house, especially children and the elderly. Based on the above principles, the heat-resistant solution for corrugated iron roofs that you can apply in your home is as follows:

Apply principle 1: Limit direct sunlight into the house

2.1 Planting trees on the roof to prevent heat from corrugated iron roofs

To prevent heat for corrugated iron roofs, the solution of planting trees right on the roof creates a cool and pleasant atmosphere for the entire space in the house. In addition, this roof covering helps the roof withstand more impact, preventing flying and gusting of storms. The house will become safer with this green covering. It is also possible to plant climbing plants on the roof such as bougainvillea, marigold, etc.

2.2 Use trees in the garden to provide shade on the roof

Planting shade trees with wide and fast-growing canopies such as banyan trees, camphor trees, soapberry trees, royal poinciana trees, and barringtonia trees is also a way to cool down your home. Planting trees with wide canopies in the direction of the sun will help reduce the temperature. To bring aesthetic value and feng shui value to your home, you need to choose the right type of tree. You need to ensure that the land space is spacious enough for the tree to grow.

2.3 Use roof shade net

Usually this method is not very aesthetic, if you use a corrugated iron roof, just attach steel or iron bars to the 4 corners of the corrugated iron roof and then stretch the nylon mesh out. You can see this solution used by gardeners to avoid direct sunlight on newly planted plants.

2.4 Use roof sunshade

Add an iron frame to support the corrugated iron above the current corrugated iron sheet. Make sure there is a sufficient distance of 50cm between the corrugated iron sheets. This method will help reduce the temperature of the corrugated iron roof very quickly on hot and humid days. This method of heat insulation ensures aesthetics, if designed cleverly, no one will notice that there are 2 corrugated iron sheets on the roof.

Apply principle 2: Equip/Upgrade heat-resistant materials

2.5 Use heat-insulating corrugated iron

Insulated corrugated iron has a 3-layer structure that helps to insulate heat and sound effectively. There are 3 popular types of insulated corrugated iron today: corrugated, imitation tile and fireproof. Insulated corrugated iron is practical, aesthetic and easy to install. Insulated corrugated iron can block heat radiation from outside and the house by about 60%, reducing heat transfer and heat loss in winter. Therefore, this is the leading solution to prevent heat for houses using corrugated iron roofs.

2.6 Use heat-resistant paint for corrugated iron roofs

Another solution is to use heat-resistant paint for corrugated iron roofs. You paint on the corrugated iron roof, especially the part of the roof that is exposed to direct sunlight. This helps the corrugated iron roof avoid oxidation and limits the absorption of heat into the house. Note that you should apply 2 layers of heat-resistant paint. In addition to heat-resistant paint for corrugated iron roofs, homeowners can also use heat-insulating paint for the walls. Heat-insulating paint has the ability to cool the space by about 15 degrees compared to the actual outdoor temperature. When using heat-insulating corrugated iron and heat-insulating paint, the roof will limit heat dissipation when it is sunny.

2.7 Use glass wool insulation

Glass wool is an insulating material made from glass fibers arranged using adhesives into a texture similar to wool. Glass wool has the ability to insulate, soundproof and fireproof... This is a very popular material in construction works today, especially used to prevent heat for corrugated iron roofs. Glass wool reduces the hot temperature from outside into the house by up to 30%. However, this material does not have a very long shelf life, so it is necessary to pay attention to monitor and replace the material in time.

2.8 Use roofing sheets, foam, and roof insulation panels

In addition to glass wool, there are many other materials that help insulate corrugated iron roofs effectively, such as silver-coated insulation foam, XPS foam, EPS insulation foam: Silver-coated insulation foam: This solution has quite a variety of specifications, with thicknesses from 5mm, 10mm, 20mm, 30mm, coated on one or two sides. XPS, EPS foam: Heat-insulating corrugated iron roofs with foam is widely used because it is easy to construct and ensures safety when used, is cheap, and has high heat-insulating efficiency.

2.9 Installation of roof cooling misting system

Misting the roof also helps reduce room temperature by 5 - 10 degrees Celsius. The mechanism of the misting system is that water is compressed under high pressure, sprayed through a specially designed nozzle, transforming into a thin mist. This type of nozzle will automatically spray water to cool the corrugated iron roof during peak hot weather, making the house cooler. However, this misting system is quite expensive, suitable for families with financial conditions.

2.10 Making plaster ceilings, heat-insulating plastic ceilings

Plasterboard ceilings are a popular solution due to their effective insulation, durability and aesthetics. For better optimization, on the west-facing or heat-resistant wall, homeowners can design a layer of plasterboard to reduce heat absorption into the house. Currently, there are also heat-insulating plastic ceilings, which will be cheaper. There are two types of plastic ceilings: foamed and non-foamed. The price of foamed plastic ceilings ranges from 145,000 VND/m2, depending on the thickness of the foam. Plasterboard ceilings cost from 150,000 VND/m2 or more.

Apply principle 3: Increase ventilation

2.11 Making skylights

Skylights are the perfect solution for houses with corrugated iron roofs, helping to overcome the problem of houses with 3 sides being neighbor's walls, not being able to open many windows. Materials commonly used for skylights are tempered glass or Polycarbonate panels - they are both resistant to UV rays. However, it is necessary to have the support of architects and construction professionals to receive the most suitable method for your land and location. When installing skylights, you also need to pay attention to issues such as light, noise or rain.

2.12 Making ventilation ducts

This is a solution to bring natural air into the house, the ventilation pipe is made of stainless steel so it does not oxidize and is durable. The stainless steel ventilation pipe is also quite light in weight and can be easily moved to the place where it needs to be installed. However, this is only a temporary solution and is difficult to bring about high efficiency compared to heat-proofing methods for corrugated iron roofs such as plaster ceilings, insulation foam, etc.

2.13 Use a ventilation ball

Surely you are no stranger to the ventilation ball, this is an industrial mechanical device made of stainless steel. The operating principle is based on air convection, taking in natural wind, creating ventilation for the space. From there, it sucks hot air in the house and brings cool air into the house. This solution is cost-effective, compact, environmentally friendly, and circulates continuously. However, using a ventilation ball requires a large quantity to be effective. When using it, you also need to pay attention to constantly checking to make sure there are no obstacles in the ball.

2.14 Arrange windows in the room, ventilation slots

Using brick walls helps the house achieve effective ventilation and air circulation. In the rooms of the house, you can arrange windows in the room, ventilation slots to help the air flow better. There are many houses that apply this solution, you can refer to Mango House with the application of cross ventilation principles to improve air conditioning.

2.15 Use electric ventilation fan

In case natural ventilation is not possible, the homeowner can completely use a ventilation fan. When installing a ventilation fan, the air in the room will circulate more easily and be much more comfortable. This method is often applied in factories, workshops... The initial cost is not too high, but the cooling capacity is also limited, not as good as the above methods.

2.16 Use air conditioning or steam fan

This method is certainly applied in most houses with corrugated iron roofs, which is to use air conditioning or steam fans. However, using only air conditioning or steam fans will essentially cool the areas that need cooling. Therefore, it is still necessary to combine with other solutions to create ventilation for the whole house.

2.17 Arrangement of indoor swimming pool and fish pond

Not only is it a way to prevent heat for the corrugated iron roof, but this method also has a feng shui meaning that brings prosperity to the house. At the same time, it is also a place to "chill" for your family home. This detail needs to be calculated and designed early to be an effective solution to help the house become naturally cool.