Carbon Monoxide Is An Immediate Threat
Carbon monoxide is a gas you cannot see or smell. It comes from burning fuel. If your heating system, gas water heater, or stove vents poorly, this gas can build up in your home. It makes you sick very fast and can be deadly.
You need a carbon monoxide detector on every level of your house. Put one right outside all sleeping areas. Test them every month and replace the whole unit every 5 to 7 years. A basic plug in detector costs $20 to $40.
Radon Gas Seeps Up From The Soil
Radon is a radioactive gas naturally found in dirt and rocks. It breaks down and floats up. It can enter your house through tiny cracks in your basement floor or crawlspace. Long exposure to high radon levels is the second leading cause of lung cancer in the US.
You should test your home for radon. You can buy a short term test kit at a hardware store for $15 to $30. You leave it in the lowest lived in level of your house for a few days and mail it to a lab. The lab sends you a number. The Environmental Protection Agency says you should fix your home if the number is 4.0 picocuries per liter or higher.
Fixing a radon problem is straightforward. You hire a pro to install an active soil depressurization system. They drill a hole in your basement floor, dig out a small pit, and run a PVC pipe up to the roof. An inline fan runs constantly to suck the gas out before it enters your living space. This setup usually costs $1,000 to $2,500. Keep in mind that prices vary widely based on your region, home age, and the exact scope of work.
Asbestos Is Safest Left Alone
Builders used asbestos in homes for decades because it resists fire and heat. They stopped using it in the late 1970s. You might find it in old floor tiles, popcorn ceilings, pipe wrap, and siding. Asbestos is not dangerous if it is in good shape. It only becomes a health hazard if you break it, sand it, or cut it. That releases tiny fibers into the air.
If you have an older home and plan to remodel, get an asbestos test first. A pro can take a tiny sample for about $100 to $200. If you find asbestos, the cheapest and safest option is often to cover it up. For example, you can install new vinyl flooring right over old 9x9 asbestos tiles.
If you must remove it, you have to hire a certified abatement team. They seal off the room, wear protective suits, and use special vacuums. This work is expensive. Removing a popcorn ceiling safely can cost $1,500 to $3,000. Prices will change depending on local labor rates and the size of the room.
Lead Paint And Plumbing
Lead is a toxic metal. Homes built before 1978 likely have some lead based paint. Homes built before 1986 might have lead solder in the water supply lines.
Lead paint is mostly a danger to young children who might eat sweet tasting paint chips. The bigger everyday risk is lead dust. Opening and closing an old painted window creates fine dust that settles on floors. You can test your paint with a simple swab kit from the hardware store.
You can manage lead paint by keeping it painted over and intact. This is called encapsulation. If the paint is peeling badly, you need a certified pro to scrape and repaint it safely.
Mold Reality Versus The Hype
Mold scares a lot of homeowners. You might see scary news stories about toxic black mold. While mold can cause breathing problems and allergic reactions, it is rarely a reason to abandon your house.
Mold is just a symptom of a water problem. Mold spores are everywhere in the air. They only grow into a colony when they find a wet spot. If you smell musty odors, you probably have a leak or high humidity.
If you find a small patch of mold under a sink, you can clean it yourself. Wear a mask and gloves. If you have a massive mold outbreak covering half a basement wall, you need a remediation company. They will set up negative air pressure and safely remove the ruined drywall. The most important step is fixing the water leak. If you do not stop the water, the mold will return.
Comparing Home Hazards
Every house is different. Some face risks from the soil, while others face risks from old building materials. Here is a quick breakdown of common threats.
| Hazard | Primary Source | Testing Method | Fix Difficulty |
|---|---|---|---|
| Carbon Monoxide | Gas appliances, fireplaces | Plug in detectors | Easy DIY |
| Radon | Soil under the house | Mail in charcoal kit | Pro job |
| Asbestos | Old tiles, insulation, ceilings | Lab analysis of a sample | Pro job |
| Lead | Old paint, old pipes | Chemical swab kit, water test | Moderate DIY or Pro |
| Mold | Water leaks, high humidity | Visual inspection, smell | Depends on size |
What Mitigation Costs
Fixing these problems usually requires special equipment. Keep in mind that prices vary widely based on your region, home age, and the exact scope of work. Here is a rough look at typical starting prices for professional hazard removal.