Materials / Roofing Materials

Roofing Materials Asbestos Testing

What it is

Older roofing assemblies (built-up roofing, asphalt shingles, roofing felt, and flashings) may contain asbestos for added durability and fire resistance. Both the membrane layers and the associated mastics can be asbestos-containing.

Where it's found

Flat commercial roofs, residential shingle roofs, and roof penetrations in pre-1990 construction across Massachusetts.

When and why

Asbestos was widely used in roofing products through the 1980s. Newer overlays often conceal older asbestos-containing layers underneath.

How it's tested

Targeted samples are collected from each roofing layer and associated mastic, double-bagged, and analyzed by PLM with point counting where indicated.

What your report covers

  • Per-layer results (membrane, felt, mastic)
  • Photo documentation
  • Area estimates for affected roofing
  • Recommendations for re-roofing or removal planning

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