Asbestos, Lead, Radon, Mold, VOCs, and CO on a House Flip
TLDRRoss’s source covers asbestos, lead, radon, mold, fumes, and carbon monoxide through his own jobs. His stories can help you spot a question. They are not cleanup recipes or legal rules, so use trained people and the current rules for the property.
Table of Contents
- Asbestos: Do Not Disturb Suspected Material
- Lead Paint: Disclosure and Renovation Rules
- Radon: Test the House
- VOCs and Carbon Monoxide: Protect the Crew
- Mold: Price the Real Scope
- How the Remediation Markup Becomes a Deal Angle
- FAQ
Asbestos: Do Not Disturb Suspected Material
Ross found asbestos in siding and floors. He named other places it may occur: glue, some blown-in insulation, HVAC wraps, and old wire insulation. He also said he is not a doctor. He did not try to rank the health risk of each product.
You cannot confirm asbestos by sight. If you suspect a material, EPA says to leave it alone. A trained asbestos pro should inspect and sample it. Bad sampling can release fibers and be more unsafe than leaving it alone. See EPA’s homeowner asbestos guide.
Ross used a pack of cigarettes as an analogy. Material left whole is not the same as loose fibers from cutting, sanding, scraping, drilling, breaking, or bad removal. Act on EPA’s tighter rule. Do not touch suspect material. Leave it alone if it is in good shape and will not be disturbed.
Do not turn a material list into a risk table. The condition, product, planned work, exposure path, and local rules all matter.
What I Did, Not a Removal Recipe
Ross described jobs where material was left in place and covered. EPA lists sealing and covering as forms of repair. It says a trained asbestos pro should do that work. This is not a blanket rule to cover every product.
Do not use this page to cut, break, sand, scrape, sample, bag, or dump suspect material. Keep people away. Call a trained asbestos inspector or abatement firm for the next step.
Ross recalled harsh cases from Seattle and Denver. They show why the money risk scared him. The source does not prove the case details well enough to make their fines or outcomes a rule. Federal, state, and local rules can differ. A state may add training or license rules. Start with EPA’s asbestos contacts and pro guide. Then check the state and local agencies for the site.
Testing
Do not guess or take your own sample from this page. A trained inspector can choose a safe way to sample and record the result.
Lead Paint: Disclosure and Renovation Rules
Ross compared lead paint with asbestos because renovation can release harmful dust. The legal rules are not the same, though.
The federal disclosure rule applies to most homes built before 1978. Sellers and landlords must share known lead facts and records. They must also give the federal booklet and warning. Buyers get the required chance to inspect. The rule has exceptions, and it does not say every old home has lead. Read the EPA Lead-Based Paint Disclosure Rule.
The work rule is separate. EPA says house flippers and paid firms that disturb paint in covered pre-1978 homes generally need firm certification and a certified renovator. They must use lead-safe methods. The test rules also name who can test and how. See the EPA Renovation, Repair and Painting program.
Ross also saw a local lead program replace soil around some rentals. That was one city program. It was not a cleanup rule for the whole country.
Radon: Test the House
Radon is a gas that can enter a house from the soil. Ross dealt with it often in Colorado. At the time, he had not seen a radon fan in his work in the South. That is his own history. It is not a map of risk.
EPA says high radon has been found in every state. You cannot know one home’s level from its region or a nearby house. You have to test. Use the current EPA buyer and seller radon guide for the test, result, and next step.
Ross showed a system with sealed ground cover, pipes, and a fan that vents above the roof. A trained radon pro should design it for the house and test it when done.
VOCs and Carbon Monoxide: Protect the Crew
Ross once built a laminate counter in a closed basement in winter. Contact-cement fumes built up. Soon he could not think or speak well. The source gives no safe time, mask, or air-flow rate. Read the product label and safety data sheet first. Set the work controls and gear before use.
His carbon-monoxide story was worse. He ran a gas concrete saw in a closed basement or tall crawl space. He sent the crew out when fumes built up, then kept cutting by himself. He became so weak that he could barely climb the stairs.
That story does not create a safe time window. NIOSH says not to use gas tools such as concrete saws indoors. Carbon monoxide can rise to deadly levels even when a space seems to have fresh air. Use electric or air tools that are made for the space. Keep engines and generators outdoors. See the NIOSH carbon-monoxide alert.
Ross’s last point was about the crew. Do not expose workers to a risk just because you once chose to take it. A paper mask or common respirator does not stop carbon monoxide.
You can be a cowboy with yourself. You cannot be one with your crew.
Mold: Price the Real Scope
Mold can keep growing while the water source remains. You have to deal with the water and the damaged material. The cleanup depends on the size, source, surface, people in the home, and risk of spread.
EPA says visible mold often does not need a sample just to prove it exists. It uses about 10 square feet as one point for choosing the small- or large-job guide. There is no federal pass or fail limit for mold spores. Read EPA’s mold and moisture guide. Do that before you call a test result a clearance.
Ross once had a mold item in a buyer’s repair request. Quotes ran from $15,000 to $20,000. They covered removal of old insulation, wall treatment, and new insulation. He guessed the unfinished basement wall was 40 to 80 feet long.
He said the work cost under $1,000. A third-party test and letter brought his total to about $1,500. That is one old job result. It is not a safe bid for a new site.
In his story, he removed damaged material, treated the wood, replaced insulation, and hired a mold firm to test again. Its letter let the sale move forward. This page does not turn that story into a recipe. A cheap home test cannot promise a later review will pass. A lab result also does not replace the water fix.
How the Remediation Markup Becomes a Deal Angle
This is where Ross turned the topic back to deal math.
His lesson was to price the known issue at the market cost a seller or normal buyer would face. Do not assume each house will match his one cheap result. The offer still needs a real check, scope, and bid.
On a $300,000 after repair value house with a $30,000 rehab, using the 70 percent rule as a napkin:
| Step | Math | Result |
|---|---|---|
| ARV times 70% | $300,000 x 0.70 | $210,000 |
| Minus rehab | $210,000 - $30,000 | $180,000 |
| Normal max offer | $180,000 |
Now add a mold issue. Market price to fix is $20,000.
| Step | Math | Result |
|---|---|---|
| Offer minus remediation market price | $180,000 - $20,000 | $160,000 |
In Ross’s napkin math, the max offer falls to $160,000. If the lawful fix and closeout cost only $1,500, the gap from the $20,000 quote adds about $18,500 of margin. That margin is earned only if the check, work, waste plan, water fix, and sale rules support the numbers.
The spread is not free money. It pays for knowledge, execution, and the risk that the visible problem is not the whole problem.
FAQ
Do I have to disclose asbestos when I sell?
This source does not answer that legal question. It does not support a claim that most states use the same asbestos rule. Review the state’s seller form and known-hazard duties with the closing or legal pro for the site. Lead paint has a separate federal rule for most pre-1978 homes.
How do I find a good asbestos test kit?
Use a trained local asbestos inspector or abatement firm. The source does not support safe DIY sampling.
What if I accidentally disturbed asbestos siding?
Stop work. Keep people out and do not touch it again. Call a trained abatement firm or the right local agency. Do not invent a cleanup plan from a video page.
How do I know if a house has radon?
Use the current EPA test steps. Follow the kit’s rules for place and time. Do not infer the result from the state, block, or nearby house. EPA’s buyer and seller guide covers tests, follow-up, and when to discuss a radon system.
I am just starting out. Should I avoid houses with environmental issues?
The source does not set a number of flips after which these hazards become safe. Do not price a suspect hazard until the right inspector knows what it is. Learn the current work, waste, closeout, seller, and worker rules. Get a sound scope and bid before you count a deal angle.