subject: Waterproofing - Roofing Solutions - Construction Joints [print this page] Waterproofing - Roofing Solutions - Construction Joints
Construction Waterproofing A building or structure needs waterproofing as concrete itself will not be watertight on its own. The conventional system of waterproofing involves 'membranes'. This relies on the application of one or more layers of membrane (available in various materials: e.g., bitumen, silicate, PVC, EPDM etc.) that act as a barrier between the water and the building structure, preventing the passage of water. However, the membrane system relies on exacting application, presenting difficulties. Problems with application or adherence to the substrate can lead to leakage. Over the past two decades, the construction industry has had technological advances in waterproofing materials, including integral waterproofing systems as well as more advanced membrane materials. Integral systems work within the matrix of a concrete structure, giving the concrete itself a waterproof quality. There are two main types of integral waterproofing systems: the hydrophilic and the hydrophobic systems. A hydrophilic system typically uses a crystallization technology that replaces the water in the concrete with insoluble crystals. Various brands available in the market claim similar properties, but not all can react with a wide range of cement hydration by-products, and thus require caution. Hydrophobic systems use fatty acids to block pores within the concrete, preventing water passage. New membrane materials seek to overcome shortcomings in older methods like PVC and HDPE. Generally, new technology in waterproof membranes relies on polymer based materials that are extremely adhesive to create a seamless barrier around the outside of a structure. Basement Waterproofing Water may enter a basement through various means including through joints, walls, or floors. Various basement waterproofing systems address these problems. There are many systems available of varying cost, effectiveness, and installation invasiveness.specially used membranes in this field are protection board sheets. Basement waterproofing may be done internally and externally. Because basement foundations can be brick,block,concrete,and even wood, it is important to pick the right waterproofing system for the right foundation. One effective way to waterproof cracks in poured concrete walls is by - Epoxy InjectonT Electronic Waterproofing In July 2008, Northeast Maritime Institute developed Golden Shellback coating for electronic devices. The coating produces a vacuum deposited film that is nonflammable, has low toxicity and has the ability to waterproof electronic devices and other surfaces. Standard IEC 60529:2001 Degrees of protection provided by enclosures (IP Code) See also Bituminous waterproofing Durable Water Repellent (DWR) coatings. IP Code Soundproofing Waterproof fabric Waterproof paper Look up waterproofing in Wiktionary, the free dictionary. Wikimedia Commons has media related to: Waterproofing Categories: WaterHidden categories: Articles lacking sources from April 2007 | All articles lacking sources
