How to keep the bathroom floor warm and waterproof?

A friend asked me, can I install floor heating in the bathroom? The answer is very affirmative. Generally speaking, you can't pretend because you are afraid of trouble, and you can't tell the responsibility for problems in the later stage. The biggest problem in the bathroom is waterproof, so as long as it is waterproof, there will be no problem. Well-done floor heating in the bathroom can improve comfort, dehumidify and prevent mildew, which is beautiful and cost-effective.

First, the waterproof characteristics of the floor heating bathroom

Compared with other rooms, the floor heating bathroom has unique characteristics. It is one of the most concentrated water supply and drainage systems, with many systems, complex structure and easy water leakage. After leakage, the maintenance cycle is long and difficult. Therefore, two layers of waterproofing are needed. The first layer (1) is used to prevent the structural layer from leaking, and the second layer is on the floor heating backfill layer to prevent the groundwater from leaking to other rooms.

Second, the bathroom floor heating waterproof technology

Basic treatment → 1 waterproof layer → water storage test → floor heating layer construction → backfill layer cleaning → No.2 waterproof layer → water storage test → waterproof layer protection → waterproof project acceptance.

Three, the bathroom floor heating waterproof construction points

Base treatment: ensure that the base is solid, flat and clean, free of dew, sand, cracks, hollows, holes and oil stains, and form a floor drain slope. Yin and Yang angles are rounded corners, and the diameters of Yin and Yang angles are about 50mm and 10mm respectively.

Waterproofing of the 1 channel: an annular groove with a width of 10mm and a depth of 10mm should be reserved at the root of the sewer pipe, which should be cleaned and filled with sealing material, and finally plugged with "plugging treasure". Construction of large waterproof coating. When painting, the thickness should be uniform, and there should be no local deposition. Bo Tu should be used several times to reach the specified thickness.

Water storage test: After the waterproof layer is constructed and dried for 48h, the water storage test will be carried out for 24h. The ground water storage height should not be less than 20mm. Only when it is leak-proof can the next process be carried out.

Construction of floor heating layer: During construction, all floor heating pipes should not directly pass through the concrete water stop, but should pass through the concrete water stop along the wall. If possible, you can lay a layer of moisture-proof reflective film on the waterproof layer.

Construction of the second waterproof layer: firstly, the backfill layer shall be leveled, and the compactness of the concrete filling layer and leveling layer shall be ensured at the dense places of pipelines, and then the waterproof layer shall be constructed with "watertight" sealing. Before the large-scale waterproof layer construction, additional layers shall be strengthened in details.

Water storage test: After the maintenance of the second waterproof layer is completed, it is necessary to conduct water storage test again. This method refers to the first water storage test.

Waterproof layer protection: soft protection can be done on the surface of coating film, such as covering PE film, so that subsequent construction will not damage the waterproof layer. Before the construction of mortar protective layer, remove the soft protective layer and check the coating waterproof layer again. If it is damaged, it must be repaired in time.

The characteristics of two kinds of waterproof materials: the first waterproof, focusing on preventing leakage of reinforced concrete floor structure, so the waterproof material selected should have: excellent anti-seepage and anti-leakage characteristics; It has good adhesion and extensibility with reinforced concrete floor structure; The second waterproofing is done on the backfill layer of floor heating, because its surface needs to be paved with stone or floor tiles, so it is necessary to consider waterproof performance, meet the bonding requirements between stone or floor tiles and the ground, and also consider heat resistance.

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