Modified Bitumen Roof Repair
Building Owners and Property Managers like you are looking for low-cost roof maintenance solutions. In the past, modified bitumen roof coatings have always been sold as a complete system that required authorized contractors. Since the economic downturn, roof coatings have been widely used in performing spot repairs to a roof to solve roof leaks, conserve capital and allow the building owner to save money for a full restoration down the road.
We are here to help – In case you get stumped, call (770)755-1820 x201.
Serviceability is one of the best reasons why roof coatings are being used for spot repairs. When done correctly, the repair you do today do not need to be removed when it is time to do a full restoration.
Identifying Your Modified Bitumen Roof
The suggestions on this page apply to aged modified roofs only. The modified bitumen roof surface should be firmly adhered to the roof deck without any bulges or wet areas.
Testing for Wet Substrate
An infrared moisture survey is the best way to check for wet substrates. Infrared cameras are expensive and only a few contractors even have them. You can try using a 3′ x 3′ black trash bag or heavy rubber mat. Place the mat over the suspect area and tape all sides. Leave overnight. After 24 hours, peel back the mat and check for condensation underneath.
Testing for Compatibility
A coating adhesion test is recommended to determine substrate compatibility. Roof coatings usually adhere well to aged modified bitumen roofs. Primers are required for modified bitumen roofs to provide a stable, chalk-free surface and reduce asphalt bleed through.
Roofing Products for Modified Bitumen Roofs
Ponding water is common problem with low-slope roofs and modified bitumen roofs are no exception. Solvent-based roof coatings offer better resistance to ponding water than water-based coatings. Yes, the products are less “green” compared to water-based coatings but they are more durable.
The application of roof coatings may invalidate any existing warranty on your built up roof. Please check with your BUR manufacturer or roofing contractor for existing warranty coverage before attempting any repairs.
| # | Application | Primer | Coating |
|---|---|---|---|
| 1 | MODBIT (No Ponding) | PrimeLock® Bonding Primer | EnergyGuard® Acrylic Coating |
| 2 | MODBIT (Ponding) | PrimeLock® MultiSurface | EnergyGuard® Butyl Coating |
| 3 | MODBIT (Ponding) | PrimeLock® Epoxy Primer | EnergyGuard® Silicone Coating |
| 4 | MODBIT (Ponding) | PrimeLock® Epoxy Primer | EnergyMax® Silicone Coating |
California Residents: Due to VOC regulations, only 1 & 4 may be shipped to your location.