Tar and Gravel

Tar and gravel, or other forms of built up roofing, is an antiquated system.

Tar and gravel is a traditional option that can last long, but has the lowest score due to the discussion on the material quality of the modern version.

The roof types are listed and discussed in terms of material, installation difficulty and expected life. The commenter says this is an antiquated system.

When installed properly, it can easily last 60 years.

The commenter identifies the roofing as "old tar and gravel", suggesting it's a type of roofing material. While not a specific brand, it's a positive mention in the context of the user's request to accurately reproduce the roof in a 3D model.

Tar and gravel is noted for its potential long lifespan (up to 60 years if properly installed) but also as an antiquated and increasingly unreliable system due to lower-quality materials and more filler.

A traditional option known for its longevity, but installation can be challenging.