We print our outdoor posters on 130gsm blue-black paper or 150gsm outdoor poster paper, both industry standard specification for water-resistant outdoor signage. They are strong, resist cracking and flaking, have minimal tearing and adhere well to base materials – perfect for the weather in the World! Use these posters on outdoor billboards or for other outdoor displays, These outdoor posters are printed on paper and are intended to be pasted up or displayed behind perspex as per pictures above. If you want a waterproof material for outdoor use try our Vinyl Banners.