helloI NEED THIS PRODUCT TO MAKE A SEAL FOR A NON-CIRCULAR CONCRETE TERRACE ROOF OF A SURFACE OF 170 M2 CAN YOU TELL ME IF THIS PRODUCT IS GOOD. I WOULD LIKE TO APPLY TO THE ROLL. THERE IS NEED FOR A UNDERCOAT BEFORE THIS PRODUCT. CAN YOU ADVISE ME FOR THE APPLICATION AND THE PRODUCTS NECESSARY. CAN YOU SEND IT TO FRANCE IN MONTREAL 93100. CAN YOU GIVE ME THE QUANTITY NECESSARY, THE PRICE WITH SLOW TRANSPORTATION BUT WITH HOME DELIVERY. THANK YOU IN ADVANCE please contact me on my address mail Angelina Show More