Materials commonly sampled in older homes
Not every house has all of these, and many are not hazardous. These are the materials an inspector usually considers.
- Plaster, skim coats and textured wall or ceiling finishes.
- Popcorn or acoustic ceiling texture added in later decades.
- Nine-inch floor tiles and the black mastic beneath them, plus older sheet vinyl.
- Pipe and boiler insulation, especially white or gray wrap on basement pipes.
- Duct wrap and tape on older heating ducts.
- Vermiculite or loose fill insulation in attics and walls.
- Roofing felts, older shingles and flashing cements.
- Cement board siding or garage panels.
- Window glazing compound and caulks.
- Painted surfaces on trim, windows, doors and walls for lead.
Where to expect them in typical Park Hill houses
| House era | Places to check | Why |
|---|---|---|
| Early 1900s to 1930s | Plaster, boiler and pipe wrap, paint layers, later floor tile | Original systems plus many later updates |
| 1940s to 1950s | Floor tile and mastic, duct wrap, ceiling texture, siding | Postwar products widely used these materials |
| 1960s to 1970s remodels | Acoustic ceilings, sheet vinyl, joint compound | Remodels inside older houses added them |
| Any older detached garage | Cement siding or roofing, paint | Outbuildings often kept original materials |
Questions to ask the inspector
- Are you certified by the state to perform this inspection?
- Which materials will you sample, and which will you assume to be hazardous instead?
- How long until results come back, and in what format?
- If results are positive, what is the next step for this scope of work?
- Do I need a separate lead inspection or risk assessment for painted surfaces?
- Will your report satisfy the City of Denver permit requirements and my insurer?
Common questions
- Does testing slow down the repair?
- It adds some time up front. Starting demolition without testing can cause much longer delays if a hazardous material is disturbed and the house then needs specialized cleanup.
- Who pays for testing after a fire?
- Many insurers include testing when it is required for the repair. Ask your adjuster before scheduling, and keep the invoice and report.
- If one material tests negative, are the rest safe?
- No. Each material is its own question. A negative result on wall plaster says nothing about the floor tile mastic or the pipe wrap in the basement.
General information for Park Hill, not a quote or professional advice. In an emergency, call 911.