Found a mistake, or have a question about something we published? Email us at contact@theinsulationbook.com.
General information, not professional advice. Building codes are adopted locally, with changes, and your building department decides what applies to your house. Where one of our pages marks a stop, stop and call a qualified professional.
We can’t answer questions about your house
We are not a contractor, an installer, an energy auditor, an electrician or an asbestos professional, and we never inspect a house. That means we can’t inspect yours, look at photos of it, or say what the material in your attic, walls or crawl space is. We can’t say whether something meets code, whether it is safe, how much insulation your house has, or what a job should cost. We can’t review a quote, a contract, an installer’s receipt or an audit report. We can’t recommend a contractor, an installer, an auditor, an electrician, an asbestos or removal firm, or a product, and we don’t refer anyone to one.
If you need an answer about your own house, these are the people who can give one:
- Codes and permits: your city or county building department. It decides which code edition applies and what your job needs.
- Old wiring, including knob-and-tube: a licensed electrician.
- Vermiculite or anything that might be asbestos: leave it alone. EPA’s pages on vermiculite insulation and asbestos in the home say what to do and who is trained to handle it.
- Furnace, boiler and water heater venting: a heating technician, especially after air sealing.
- Help paying for insulation on a low income: your state’s weatherization program. The Department of Energy explains how to apply.
- Rebates: your state energy office.
In an emergency, call 911. Don’t email us.
Reporting an error
Please include the address of the page, the figure, rule or sentence you think is wrong, and a link to the official source for the right information if you have one: an ENERGY STAR, EPA, CPSC or Department of Energy page, a section of the Code of Federal Regulations, a model code section with its edition, a state rule, or a maker’s own data sheet with its publication number and date. We check every report against the source. Makers reissue their coverage charts and agencies revise their pages, so a report that a source has changed is especially welcome. Our corrections page explains what happens next.
Makers, contractors, advertisers and firms
We don’t sell sponsored posts, links, reviews, listings or placements, and we don’t take affiliate deals, sell leads or make referrals. If you publish a chart, a data sheet or a rule we cite and a newer edition is out, or a fact on our page about your product or field is wrong, send the document and we will check it like any other report.
What not to send
Please don’t send photos of your house, your address, quotes, contracts, invoices, audit reports or other personal details, yours or anyone else’s. We don’t need them to check a page, and we won’t review them. Never mail or bring us a sample of insulation or of any other material. Our privacy policy explains how we handle what you send us.