RETROWRAP is a cold applied, splashzone and sub-sea corrosion protection system. It is suitable for risers, piles, and pipelines. Corrosion inhibitors in contact with the substrate provide active protection. RETROWRAPS are held in place with flanged mechanical closures that induce hoop tension into the wrap fabric insuring an inward force against the substrate. RETROWRAP units may be removed for substrate inspection and then reinstalled.

Advantages of RETROWRAP:
– Flanged Closure provides easy installation
– Removable & Replaceable to facilitate substrate inspection
– Provides active protection by chemical inhibition
– Abrasion Resistant
– Cold Applied - No Hot Work Permit is required
– Minimal Surface Preparations
– Available to suit diameters from 2 inches (50 mm) to 10 feet (3m)
– Environmentally Safe
– "Hoop Tension" forces in outer skin counteract high wave suction forces

RETROWRAP is a cold applied, splashzone and sub-sea corrosion protection system specifically designed to provide an alternative to factory applied coating for new construction in remote areas or the retrofit protection of risers, piles, and pipelines for inshore, offshore, or sub-sea. RETROWRAP units may be removed and refitted to facilitate substrate inspection at regular intervals throughout the service life of the system.

The materials in the system are stressed below their operational limits, insuring a high safety factor in all parameters while in service. In designing RETROWRAP, careful consideration was given to achieving a quick and easy installation in both the North Sea, where sub zero temperatures are often experienced, and in the elevated temperatures of the Middle East.

RETROWRAP is of multi-layer construction. The individual components consist of outer coating, polyamide reinforcing fabric and a polyester felt inner layer which are in-line simultaneously bonded together to form a monocoque fabric. This unique construction can be varied by adding or reducing the thickness of the coatings or modifying the fabric. This feature allows us to change physical characteristics such as induced hoop tension, impact, and abrasion resistance and puncture strength to suit the application for which the RETROWRAP system is to be used.

The absorbent felt inner layer is impregnated with a water repellant thixotropic gel which acts as a carrier for a number of inhibitors, or biocidal treatments, as dictated by the substrates.

After installation, the RETROWRAP outer jacket provides permanent hoop tension to the substrate, due to the elastomeric properties within the fabric. The closure system facilitates ease of removal and replacement of individual units for routine inspection of the substrate at intervals dictated by the client. The RETROWRAP bolted flange closure has been designed to accommodate all fabric thicknesses and, in common with surface preparation, reduces installation to its simplest form, i.e. the mechanical removal of marine growth and any delaminate iron oxide. Once installed, the inhibitors commence the pacification process to neutralize and maintain surface contaminants in an inert state.

RETROWRAP is a cold applied system and therefore does not require a hot work permit, which significantly reduces pre-installation preparation necessary before carrying out offshore installations.

Safety is of paramount importance. RETROWRAP conforms with the recommendations of the "Cullon Report" regarding offshore safety in the British sector of the North Sea and now recognized and practiced by many nations.

RETROWRAP can be varied to accommodate hexagonal, square, "I" and "H" section piles. In areas of the world where the regular removal of excessive marine growth buildup is a costly annual exercise, RETROWRAP may be overcoated with a non-toxic, low surface energy anti-fouling system.