Asphalt Rejuvenation: Frequently Asked Questions

Documented field performance for maltene-based rejuvenation typically extends pavement service life by around 4 to 7 years per treatment, depending on traffic loading, UV exposure and base condition. The exact interval for any South African surface depends on a condition assessment and local environmental factors — our technical team can advise after a site evaluation.

Rejuvenation is most effective on surfaces showing moderate oxidation — grey surface colouration, early surface microcracking and surface hardening that typically appear several years after paving. The pavement must still be structurally sound, with no base failure or deep structural cracking. Surfaces already exhibiting ravelling, potholing or sub-base failure are not candidates for rejuvenation and require rehabilitation first. A pavement condition assessment is the first step.

Yes. Rejuvenation suits municipal road networks because it supports a network-level preservation strategy — treating structurally sound roads before they require expensive rehabilitation, and so stretching limited maintenance budgets further. Engineers can integrate it into road asset management programmes as a scheduled preventative treatment, typically on a multi-year cycle following condition assessment.

Rejuvenation is significantly less expensive than a hot-mix asphalt overlay or full resurfacing. While exact costs depend on surface area, condition and access, it typically costs a fraction of a conventional resurfacing programme for the same area. Applied at the right point in the deterioration cycle, it can defer resurfacing by several years — delivering additional serviceable life at a fraction of the cost of rehabilitation. All figures are indicative and subject to a site assessment.

No. The process is spray-applied and does not require hot-mix equipment, milling machines or heavy plant. Application is typically completed in a single session and most surfaces are trafficable within hours (approximately 2.5 hours, conditions-dependent). By comparison, conventional resurfacing usually involves milling, paving and extended curing — often multi-day closures. This makes rejuvenation valuable where minimising disruption matters: commercial properties, logistics hubs, airports and busy urban roads.

Surface microcracks — yes; rejuvenation seals them from within and slows the progression of oxidation cracking on appropriately conditioned surfaces. Structural cracking and base failure — no; those require rehabilitation. The condition assessment determines suitability.

When applied to a road in the appropriate condition window, the rejuvenator penetrates the bituminous layer, helps rebalance the asphaltene/maltene fractions in the binder, seals surface microcracks and creates a hydrophobic surface barrier. The result is measurable improvement in surface flexibility and resistance to further oxidation, confirmed through pre- and post-treatment binder property testing.

Renew a Road works with municipalities, roads departments, civil engineering consultants and commercial property managers nationwide, with active focus on Cape Town and the Western Cape, Johannesburg and Gauteng, Pretoria, and Durban. Contact us to confirm coverage for your site.