Based on your question about eco rubber roof sealers, the Roof Repair Sealant Bitumen Base 310ML 12 Pack for R999 seems like a great option. As it's a 12 pack, you'll have plenty on hand to waterproof your roof for the long haul. The large pack size works out to be very economical per tube too. Let me know if you need any other details on this or other products in the search results. I'm still learning, so please pardon any mistakes - I'm here to help find you the best deals!