Modified bitumen (mod-bit) is asphalt roofing engineered for low slopes: multi-ply redundancy and a puncture toughness single-ply membranes cannot match.
Modified bitumen’s argument on a McKinney building is layers. Two or more plies of polymer-modified asphalt mean a puncture has to get through redundancy, not a single membrane. It stands up to rooftop foot traffic, which suits buildings whose roofs double as equipment yards, and modern cold-applied and self-adhered systems have retired most of the old torch-down fire concerns.
The estimate is free and written. The inspection is documented with photos. We never waive deductibles, as Texas law requires, and we are not a public adjuster.
Mod-Bit Plies Against McKinney Hail
Those extra plies earn their keep here. In 16 of the last 20 years, inch-plus hail fell within 8 miles of McKinney, and 18 days since 2006 reached golf-ball size or larger. A stone that bruises the cap sheet usually still meets a second ply underneath, which buys time to make a proper repair instead of chasing an active leak after the storm.
McKinney’s housing leans new, with 40 percent built in 2010 or later and a median year of 2007, but the city’s commercial roofs carry HVAC units and service traffic that mod-bit is well suited to handle. We look at walk paths and equipment curbs first, since that is where wear concentrates. We also install and repair modified bitumen in Lucas and Allen.
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 McKinney
How a roof system holds up in McKinney depends on the storms it has to take and the houses it sits on. Here is what the public record shows.
39
Hail days, 1 in.+ since 2006
18
Golf-ball-size hail days
4.5 in.
Largest stone on record
2007
Median year homes built
Hail near McKinney
NOAA's Storm Events Database lists 39 days since 2006 with hail one inch or larger reported within 8 miles of McKinney. On 18 of those days, the stones were golf ball size or bigger. Hail that size was reported in 16 of the last 20 years. The largest stones on record nearby measured 4.5 inches (softball size) on March 24, 2019. The most recent report: 1-inch hail on March 29, 2025.
March 24, 2019: 4.5-inch hail (softball size)
May 28, 2024: 2.75-inch hail (baseball size)
April 21, 2017: 2.75-inch hail (baseball size)
May 19, 2023: 2.5-inch hail (tennis ball size)
June 15, 2023: 2-inch hail (hen egg size)
How old McKinney homes are
The median home in McKinney was built in 2007. A large share of the city's 77,617 housing units are now old enough that original roofs are coming due, while 40% were built in 2010 or later.
Sources: NOAA National Centers for Environmental Information, Storm Events Database (hail reports since 2006 within 8 miles of McKinney); U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Data pulled September 2026.
Common questions about modified bitumen roofing in McKinney
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 McKinney?
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.
Is upgrading from builder-grade shingles worth it in McKinney?
Usually at the first replacement or claim: Class 4 impact-rated systems earn many Texas carriers' premium discounts, and newer communities' HOA standards generally approve them easily. The math works hardest on homes facing decades of DFW hail.
How often does hail hit McKinney?
NOAA's Storm Events Database lists 39 days since 2006 with hail one inch or larger reported within 8 miles of McKinney, including 18 days with golf ball size stones or bigger. Hail that size was reported in 16 of the last 20 years. The most recent report was 1-inch hail on March 29, 2025.
How old are most homes in McKinney?
The median home in McKinney was built in 2007, according to the U.S. Census Bureau's American Community Survey. 8% of the city's housing units predate 1980 and 40% were built in 2010 or later. Many homes here still have their original builder-installed roof.
