What should be paid attention to in the installation of household floor heating and wet paving method?

What are the precautions for floor heating and wet paving?

1. The floor heating system needs to set expansion joints at the vertical joints between walls, columns, doors and the ground. The width of expansion joints should not be less than 10 mm. When the ground area exceeds 30m2 or the side length exceeds 6m, expansion joints should be set, and the width of expansion joints should not be less than 8mm. The above expansion joints have been laid before the construction of concrete filling layer, and attention should be paid to protecting the expansion joints from damage during the construction of concrete filling layer.

2. After the installation of the floor heating pipeline is completed and the water pressure test is qualified, the construction of the concrete filling layer is completed within 48 hours;

3. The filling layer is a structural layer to protect the plastic pipe and make the ground temperature uniform. Generally, it is pisolite concrete, the stone particle size should not be greater than 10mm, the volume ratio of cement mortar should not be less than 1: 3, and the strength grade of concrete should not be less than C 15. Filling layer thickness should comply with the design requirements, flatness is not more than 3 mm.

4, concrete filling layer construction, it is forbidden to use mechanical vibrating equipment; Construction personnel should wear soft-soled shoes and use flat-headed shovels.

5. The construction of concrete filling layer shall be undertaken by a qualified civil contractor, and the unit shall cooperate closely;

6. When the concrete filling layer is constructed, the water pressure in the heating pipeline should not be lower than 0.6MPa, and when the filling layer is maintained, the system water pressure should not be lower than 0.4MPa.

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