Before the layer of insulation for the system of floor heating, To lay the tape (Band) perimetric which is the joint between the slab and all building components that surround it such as walls, columns, stairs, etc..
Make sure that the internal plaster has been perfectly finished until the insole Crude, so that the adhesion of the tape to the vertical walls both total.
The tape must be laid from the raw slab to above the level of the finished floor and must be well fixed, eg in door frames, pillars, etc. uprights., So as not to undergo displacements.
To ensure the continuity of the perimeter lay the tape overlapping the ends of at least 10 cm.
In the case of multiple insulating layers, the perimeter tape can be laid from the penultimate layer.
The upper part of the belt which exceeds the level of the floor, it must be shave once the cladding completed.
In the case of textile or plastic coatings must also wait for the hardening time of the additive.
La strip front nylon is transparent to the functional coverage of the perimeter edge of the insulating layer so as to protect it from moisture ingress due to the jet of screed.
If you want to do the insights on heating in the floor, you can find valuable information at the following links: