Profile: All White Manufacturing Inc. is in the business of manufacturing water proofing material under the name of R400 rubber. Our R400 rubber is a liquid applied material that dries as a thick sheet of rubber. It is a waterbased system which is flexible enough to absorb movement of the substrate due to temperature changes. R400 rubber stop existing leaks and prevent any further leaks from occurring. We utilize a manufacturing process that produces a true rubber acrylic with out fillers or extenders.