Problems of floor heating and leveling

(1) Construction preparation before floor heating:

1. 1 Before laying the ground thermal insulation system, make sure that the civil ground wall has been completed, and do a good job of foundation leveling, and there is no other type of work under construction at the site.

1.2 The indoor temperature of the construction room should meet the requirements of the pipes used, and the temperature should be used reasonably, because the ambient temperature is closely related to the bending radius of the pipes.

1.3 Clean the floor and wall, and check the flatness of the floor with a level. The height difference within 1m is less than or equal to 5 mm. The protruding part of the wall or ground should be removed with a shovel, and the pits and grooves on the ground should be filled with concrete.

1.4 Waterproof layer or moisture-proof film should be laid at the bottom of toilet and villa.

(2) After the floor heating is laid, the concrete shall be backfilled.

2. 1 The thickness of concrete backfill layer is generally about 3-5CM, and the minimum should not be less than 3CM.

2.2 The mixing ratio of backfill concrete shall strictly follow the mixing ratio standard of Quality Standard and Inspection Method of Ordinary Concrete Sand and Stone.

2.3 The construction of concrete filling layer shall be completed within 48 hours after the installation of floor heating pipeline and the water pressure test is qualified.

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