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Gravel Roof Restoration
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Our gravel built-up roof restoration process uses a cold applied, high performance flood coat of
waterproofing bitumen that reconditions the surface of an aging built-up roof. Its special blend of
natural and synthetic fibers provides a thick film that smooths minor imperfections such as alligatoring
and hairline cracks. Gravel is then embedded for maximum impact and fire resistance.
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Advantages to Gravel Roof Restoration
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- Experience has shown that restoration can dramatically extend the service life of a built-up roof and
delay replacement for many years.
- The cost of restoration is far less than replacement with a comparable roof and represents an
excellent value through cost avoidance by protecting an existing investment.
- The restoration process can be repeated in most instances, truly maxmizing the service life of the
roof.
- Since little or no roof membrane is removed during restoration, interruption of building activity is
minimized.
- Reusing the existing roof saves tear-off and disposal costs, as well as being environmentally
considerate.
- Low odor cold process restoration eliminates disruptions due to noxious fumes and alleviates building
occupants' health concerns related to roof work.
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Steps in Gravel Roof Restoration
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1. Analysis
To determine if a roof is suitable for restoration, Tremco roofing experts perform visual inspections,
a Thermocore® infrared moisture analysis,
and a TRACE® & ACT® roof core analysis & asbestos test which will be tested at the Tremco Research Center.
These tests provide factual laboratory data on the construction and condition of the built-up roof.
2. Preparation
Proper preparation of the roof surface is critical to the success of the restoration process: For gravel
roofs, all loose gravel, dirt and debris are removed and the entire surface is cleaned prior to work
commencing.
3. Repair & Inforcement
Spot Replacement
Membrane faults must be repaired or replaced to prevent any further roof deterioration.
Increased Strength
Blisters, ridges and other defects in the membrane and mastic.
Flashings, gravel stops and other projections are repaired and reinforced so that they are stronger than
original.
4. Renewed Protection
Added Reinforcement
Additional polyester or glass membrane may be incorporated into the top coat to reinforce and strengthen
the system.
Improved Waterproofing
A cold applied restorative top pour tenaciously bonds to the aged top pour, filling the grooves and
penetrating the areas of exposed and weathered felts.
Enhanced Weather Barrier
As a barrier against ultraviolet light and its photo-oxidizing effects, gravel or a reflective coating
protects and covers the top pour and membrane.
Extended Life
A properly restored roof gives years of added service life.
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