Hot Tar Roofing/Built-Up Roofing/Tar and Gravel Roofing Services

We provide professional hot tar roofing services nationwide for aging flat roofs affected by leaks, membrane deterioration, ponding water, and weather-related wear. Installation and repair of built-up roofing layers create a durable waterproof surface that sheds moisture, seals vulnerable areas, and provides long-term roof protection. Request a quote today.

What Is Hot Tar Roofing and Where Is It Commonly Used?

Hot tar roofing is a built-up roofing system made from layers of roofing felt and heated asphalt applied in alternating layers. It is commonly used on flat and low-slope commercial buildings because it creates a thick, durable waterproof membrane.

How Does Hot Tar Roofing Compare to Modified Bitumen Roofing?

Hot tar roofing uses multiple layers of asphalt and reinforcing materials, while modified bitumen is typically installed as rolled membrane sheets. Built-up hot tar systems generally provide more redundant waterproofing because several layers work together to block moisture.

Why Is My Hot Tar Roof Blistering or Bubbling?

Blistering happens when air or moisture becomes trapped beneath the roofing membrane and expands during temperature changes. If left untreated, these raised areas can crack and allow water to penetrate deeper into the roof system.

Can a Hot Tar Roof Be Repaired Instead of Replaced?

Yes, a hot tar roof can often be repaired if the damage is limited to localized leaks, cracks, or deteriorated surface areas. Targeted repairs can restore waterproofing without replacing large sections of the roofing assembly.

How Long Does a Hot Tar Roofing System Last?

A professionally installed hot tar roofing system typically lasts 20 to 30 years with proper maintenance and periodic inspections. Lifespan depends on drainage conditions, UV exposure, foot traffic, and how quickly minor defects are repaired.

What Are the Most Common Signs a Hot Tar Roof Needs Attention?

Common warning signs include standing water, surface cracking, exposed reinforcement, loose flashing, and recurring leaks. Addressing these issues early helps prevent moisture from reaching the insulation and structural roof deck.

How Much Does Hot Tar Roofing Cost?

Hot tar roofing costs typically range between $5,850 and $18,450, with average pricing depending on total roof size, the number of built-up roofing layers being installed or replaced, roof accessibility, and the overall condition of the existing roofing system. Pricing can also vary based on tear-off requirements, insulation upgrades, flashing and penetration details, asphalt material specifications, and whether structural or drainage corrections are needed before installation.

Our Service Area

We provide services nationwide, including in the following cities: