EFFECTIVE ROOF WATERPROOFING METHOD

In this article, Hung Thinh Waterproofing shares with readers about the effective waterproofing of the roof floor plan for the house under construction.

1. How to choose materials?

We need to understand that waterproofing is always the right method, Waterproofing materials are just support, not miracles.

Currently, there are a lot of waterproofing materials on the market, so when learning about  waterproofing materials on the network, many readers will be prone to information disorders. To make it easier to understand, the reader can understand this as there are 3 main material lines.

- Waterproofing materials in the form of spray, sweep, rolled mortar. This type of advantage does not have any joints (Joints is one of the risk of very high permeability), However, when applying this type of material, attention should be paid to the thickness of the waterproofing membrane.

- Waterproofing materials in sheets, stickers, welded sheets, torch. This type of advantages of fast construction, very good quality. However, there are many joints, so the construction of this material needs to be careful, strictly comply with construction methods. For roof shapes with complex shapes, this material should not be used.

- Absorbent crystalline waterproofing material. This form after capillary to concrete will fill the concrete pores to form a water barrier in concrete.
So which type will you choose for your rooftop or terrace? Please use the materials of big, reputable materials manufacturers, large suppliers to avoid the situation of fake goods floating a lot in the market. For roof and floor areas, the biggest factor that can damage the waterproofing membrane is the temperature in the dry season. And especially the roof floor will be very easy to crack during use so the waterproofing membrane must have elasticity, good elasticity so that the floor of the waterproofing membrane does not crack. Therefore, the roof waterproofing membrane must have good sun resistance, good elasticity and UV resistance (if you are exposed). Note that materials with good heat resistance are not soaked in water as well as those that are good in water. You can refer to the products of SIKA, MAPEI, KESHUN, RBM BELGIUM VANDEX GROUP, LOEWENMAL, MATACRYL ....

2. Waterproofing roof, terrace like? What to note when waterproofing the roof floor, terrace.

When waterproofing the roof floor, you need to waterproof directly onto the concrete layer of the construction order, including the following steps:

- Surface treatment. You need to clean the surface thoroughly, removing weak mortar parts on the surface to ensure a solid, rough surface so that the material can adhere to the roof surface. In addition, before applying waterproofing layer to the floor, you need to deal with all cracks on the floor and concrete areas with defects.

- After finishing surface treatment, waterproofing of pipe necks. You note that the horizontal pipe or neck through pipes, brick walls through walls must be waterproof. When waterproofing the neck, there must be expanded rubber.

- After waterproofing the pipe neck, it is possible to apply a waterproofing membrane. Note that it is necessary to carefully handle the positions of corners, edges, walls, constructing in accordance with the manufacturers' norms, using machines to stir materials.

- When the waterproofing membrane is completed, you need to soak in water for 2-3 days to check the results.

- When the water test results are good, you should apply a 2-4 Cm thick protective mortar to protect the waterproofing membrane so that the waterproofing layer can reach a long service life. This grout must slope down to the floor drain.

* Points to note when waterproofing the roof floor, terrace.

- The protective mortar layer must have a slope to allow water to drain easily.

- The neck tube must be waterproofed according to the process, large diameter for easy flow. After the construction is done, put trash screens in the floor drains.

- Cracks, concrete faults need waterproofing treatment before waterproofing.

-The location of the foot of the wall, joints, eyelids need construction of 2 layers of waterproof or more.

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