Polyurethane Crack Injection Vs Creosote

by | Nov 13, 2021 | Concrete Services | 0 comments

  • Polyurethane crack injection is far more flexible than creosote so it can flex and repair concrete floors with the crack as it opens and closes. Creosote is rigid, thus will eventually break away from the crack. Polyurethane’s chemical properties are much better than creosote, resulting in very little flammability compared to creosote. It has a much lower vapor pressure than creosote, meaning that there is no hazardous vapor created during its application or use. This makes for an excellent indoor crack injection application when done properly using any modern equipment designed for this purpose by qualified applicators. Polyurethane hardens to a hard solid state once it is catalysed with Methyl Ethyl Ketone Peroxide. It can’t be softened or removed as creosote can if it is improperly done, thus making the job last longer and perform better than creosote. Polyurethane will permeate through a variety of materials including brick and masonry materials, unlike creosote which does not easily penetrate these materials because all it does is coat them and flake off with time. This means that polyurethane has proven to outlast creosote by years in injection applications.
  • Many customers using various products such as “wood injectors” for injecting creosote into older WDCC’s have been sorely disappointed to later find that the application did nothing more than temporarily seal the crack (which opened again soon after). The main reason for this is that the product was not applied correctly. Any wood injector, even those using a specially designed tip, will not do an adequate job on creosote alone if it’s neat and thin (and some thicker), especially when dealing with older WDCC’s that may be up to 75-100 years old. Furthermore, some customers were told by inexperienced applicators of other products such as “concrete sealer” and believed them only to find out later they had been duped and given misleading information because these same so-called professionals weren’t properly trained or educated in the actual realities of injecting cracks properly. They were merely salesmen who knew little or nothing about their product and often used the cheapest grades of materials available which made for a very poor quality application. The use of proper equipment such as a compressor, hose, polyurethane injection machine and proper polyurethane crack injection material is essential for any successful crack injection job no matter what the product.
  • Some customers were told they needed to have new concrete poured or that their building was unsound and should be torn down if not properly “cured” first (which would destroy everything inside the structure), when in actuality they just needed a good professional water-resistant exterior polyurethane crack injection with Methyl Ethyl Ketone Peroxide catalyst applied correctly without destroying anything. In fact most buildings actually need this type of professional injection work whether they are sound or not. It is much more common that a building is in fine condition but has experienced water intrusion through cracking in the exterior brick and mortar which needs to be properly corrected with an injection process to permanently seal it from further damage.

Our Categories

Recent Comments