陽台磁磚滲水

小弟購買新屋 但是三樓陽台有滲水的現象
想請問這樣正常嗎?
https://scontent.ftpe7-4.fna.fbcdn.net/v/t58.16807-6/33269199_362763407695697_2127691330598469632_n.mp4?_nc_cat=107&vs=f87f193455fa8e9e&_nc_vs=HBkcFQAYJEdNX2xfd0ZSbncxdzdra0JBQUFBQUFEX0U0Y2RicWRCQUFBRhUAAEsBiBJwcm9ncmVzc2l2ZV9yZWNpcGUBMRUAJQAcAAAYDzEwMDAwMjQ4MzkxMTc0ORaQ3cLU2r%2BICBUCGQUYAkMzGAt2dHNfcHJldmlldxwXQC%2BrAgxJul4YHmRhc2hfYmFzaWNfdjRfaHEyX2ZyYWdfMl92aWRlbxIAGBh2aWRlb3MudnRzLmNhbGxiYWNrLnByb2QZHBUAFYT5AgAoElZJREVPX1ZJRVdfUkVRVUVTVBsDiBVvZW1fdGFyZ2V0X2VuY29kZV90YWcGb2VwX2hkE29lbV9yZXF1ZXN0X3RpbWVfbXMNMTU2Mjg1MTk4MTUzMgxvZW1fY2ZnX3J1bGUHdW5tdXRlZCUCAA%3D%3D&efg=eyJ2ZW5jb2RlX3RhZyI6Im9lcF9oZCJ9&_nc_oc=AQk7pDwPYhR46uYFb897Hvlz7okUquUQ4fXcI2qrX_yunKg0brpF1iWIxryLFg2JBbwTmMuyptecs5M8mdTdKNjT&_nc_ht=scontent.ftpe7-4.fna&oh=5da69aba1ea881f8340e2c29451651d0&oe=5D2931FD&_nc_rid=b3d362a9843141a
小弟有將影片上傳YOUTUBE但是畫質不是很好 所以請複製以上網址觀看
幫小弟解惑 感謝