How to pronounce “waterproofed” in English

about 45 or 50 degrees outside and uh the wind was blowing and gusting pretty hard and so we retreated back to thisrockfall took off all our clothes waterproofed everything in our pack and blew up stuff sacks so we'd had had enough air in the pack to keep itbuoyant and then just started pulling ourselves along the edges here and as we went around these blind Corners not