Modified bitumen (mod-bit) is asphalt roofing engineered for low slopes: multi-ply redundancy and a puncture toughness single-ply membranes cannot match.
Mod-bit’s argument on Granbury buildings is layers: two or more plies of polymer-modified asphalt build a roof with backup. A puncture must get through redundancy, not one membrane. It handles rooftop foot traffic well, which suits buildings whose roofs double as equipment yards. Modern cold-applied and self-adhered systems have retired most of the old torch-down fire concerns.
We install and service modified bitumen roofing across Granbury and the surrounding DFW communities: free written estimates, documented inspections, and honest guidance on whether this system actually fits your home and budget.
How Granbury changes the math
Before the material talk, look at Granbury itself, because the housing stock sets the terms. Housing this far out is less uniform than the inner suburbs. Age, pitch, and construction quality vary house to house, so the material fit does too. For those roofs, single-ply is a systems conversation: attachment method, insulation, and flashing details carry more of the outcome than the membrane brand.
Granbury handles roofing permits the way most Hood County cities do: required where structure or full replacement is involved, quick when the paperwork is right. We file it. The weather here is not hypothetical: single-ply shows bruise fractures that a chalk circle will not catch, and instrument surveys find what walking the roof misses. Nearby Dallas and Fort Worth see the same crews and the same spec, so the install you would get has local addresses attached. Start with the free inspection; the material conversation is better once we have seen the deck.
THE SYSTEM
Modified Bitumen Roofing, up close.
Modified bitumen. Granule-surfaced torch-down sheets, lapped and sealed, an asphalt system laid flat.
PUBLIC RECORD
The local record behind Modified Bitumen Roofing in Granbury
How a roof system holds up in Granbury depends on the storms it has to take and the houses it sits on. Here is what the public record shows.
23
Hail days, 1 in.+ since 2006
9
Golf-ball-size hail days
2.75 in.
Largest stone on record
2003
Median year homes built
Hail near Granbury
NOAA's Storm Events Database lists 23 days since 2006 with hail one inch or larger reported within 5 miles of Granbury. On 9 of those days, the stones were golf ball size or bigger. Hail that size was reported in 14 of the last 20 years. The largest stones on record nearby measured 2.75 inches (baseball size) on May 15, 2013. The most recent report: 1.25-inch hail on May 16, 2025.
May 15, 2013: 2.75-inch hail (baseball size)
March 1, 2023: 2-inch hail (hen egg size)
June 12, 2009: 2-inch hail (hen egg size)
May 9, 2024: 1.75-inch hail (golf ball size)
May 3, 2021: 1.75-inch hail (golf ball size)
How old Granbury homes are
The median home in Granbury was built in 2003. A large share of the city's 6,134 housing units are now old enough that original roofs are coming due, while 37% were built in 2010 or later.
Sources: NOAA National Centers for Environmental Information, Storm Events Database (hail reports since 2006 within 5 miles of Granbury); U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Data pulled September 2026.
Common questions about modified bitumen roofing in Granbury
Is torch-down roofing safe?
Modern mod-bit rarely needs torches, since cold-applied adhesives and self-adhered sheets install without open flame. Where torch application is used, certified crews and fire-watch protocols are non-negotiable.
When does mod-bit beat single-ply in Granbury?
Heavy rooftop traffic and equipment service. The multi-ply build tolerates the abuse that punctures single membranes. Buildings whose roofs are working platforms are mod-bit's home field.
Do you install this on shops and outbuildings near Granbury?
Yes. Barns, workshops, and outbuildings are first-class projects out here, not afterthoughts, and the material conversation (usually metal-forward) covers them alongside the house.
How often does hail hit Granbury?
NOAA's Storm Events Database lists 23 days since 2006 with hail one inch or larger reported within 5 miles of Granbury, including 9 days with golf ball size stones or bigger. Hail that size was reported in 14 of the last 20 years. The most recent report was 1.25-inch hail on May 16, 2025.
How old are most homes in Granbury?
The median home in Granbury was built in 2003, according to the U.S. Census Bureau's American Community Survey. 26% of the city's housing units predate 1980 and 37% were built in 2010 or later. Many homes here are reaching the age when original roofs come due.
