It's really hard, first melt the geotextile with iron plate, pay attention to the melting degree, half exposed of PE film is ok. then use a layer of one fabric and one membrane film to connect it, and it's suitable for the film over 0.4, the thin film can only be pasted with PEglue. you can pull up the repair part and put water into it for inspection. you must leave some cloth while construction, otherwise, high pressure will makes the repair parts crack.
