Roof Rejuvenation

Asphalt shingles are held together by oils in the asphalt that keep them flexible. Every summer of UV exposure and every winter of freeze-thaw cycles slowly drives those oils out. As shingles dry, they become brittle, granules loosen and wash into the eavestroughs, edges begin to curl, and the shingles lose their ability to flex with temperature swings and wind.

Rejuvenation works by putting oil back into the asphalt. Rather than coating the surface, a bio-based treatment soaks into the shingle and restores flexibility from within, which helps shingles hold their granules and resist cracking for years longer.

Rejuvenation is designed for roofs that are aging but still structurally sound. It is not a repair for active leaks, missing shingles or rotted decking, and it can't bring back shingles that are already falling apart.

Roof coatings sit on top of the shingle like paint. They can change the colour or reflectivity of a roof, but they don't restore the asphalt itself and can trap moisture if applied incorrectly. Rejuvenation, by contrast, penetrates the shingle and leaves it breathable, so the roof continues to shed water and dry normally.

Compared with replacement, rejuvenation is a fraction of the cost and generates virtually no waste. It doesn't replace a roof that has reached the end of its life — but for a roof with years of usable life left, it can defer a major expense and keep tonnes of shingles out of landfill.

After an inspection confirms the roof is a candidate, any minor repairs are completed first — a cracked vent boot or a few loose shingles should always be fixed before treatment. The surface is cleared of loose debris, and the rejuvenator is applied evenly across the shingles. Application on a typical home takes only a few hours, and the treatment continues to soak in over the following days. Landscaping and siding are protected throughout.

Treatment is weather-dependent: it should be applied on a dry roof with no rain in the immediate forecast, which in the GTA generally means spring through fall.

A rejuvenated roof still benefits from the same basic care as any roof. Keeping eavestroughs clean, maintaining good attic ventilation, trimming overhanging branches and booking periodic inspections all help the treatment deliver its full benefit. Depending on the condition of the roof at the time, some homeowners choose a follow-up treatment several years later to extend the roof's life even further.