Learn about radiation sources, health effects, and how to protect your home and family.
Radiation comes in two types:
Ionizing Radiation (High-energy, can be harmful in large doses)
This type has enough energy to damage cells and DNA. Common examples:
X-rays & Gamma Rays: Used in medical imaging and cancer treatment.
Alpha & Beta Particles: Found in radon gas and some old glow-in-the-dark watches.
Neutron Radiation: Found in nuclear reactors.
Reference: EPA – Ionizing Radiation
Non-Ionizing Radiation (Low-energy, generally safe in everyday use)
This type doesn’t have enough energy to damage DNA. Common examples:
Radio Waves & Microwaves: Used in cell phones, Wi-Fi, and microwaves.
Infrared & Visible Light: Felt as heat (like from the sun or a heat lamp) or seen as light.
Ultraviolet (UV) Light: Causes sunburn but also helps produce vitamin D.
Reference: WHO – Electromagnetic Fields
Radiation is naturally present in our environment, and several sources can be found inside homes. The most common sources include:
Radon Gas
Radon is a naturally occurring radioactive gas that seeps into homes from the ground. It is the leading cause of lung cancer among non-smokers.
It typically enters through cracks in foundations, walls, and floors.
Radon levels vary by location and home ventilation.
Reference: U.S. Environmental Protection Agency (EPA) – Radon
Building Materials
Some construction materials, such as granite, concrete, and brick, contain trace amounts of radioactive elements like uranium, thorium, and potassium-40.
While these materials emit radiation, levels are usually low and not a major health concern.
Reference: Health Physics Society – Radiation from Building Materials
Household Items & Consumer Products
Smoke Detectors: Some older smoke detectors use small amounts of americium-241, a radioactive element. Modern smoke detectors are generally safe.
Ceramic Tiles & Glazed Dishes: Some older tiles and dishware may contain uranium-based glazes that emit low levels of radiation.
Antique Clocks & Watches: Luminous dials on vintage clocks/watches may contain radium, which can be a radiation source.
Reference: U.S. Environmental Protection Agency (EPA) – Radiation in Everyday Products
Electromagnetic Radiation from Appliances
While not ionizing radiation, everyday household devices emit electromagnetic radiation, including:
Microwave Ovens (emit non-ionizing microwaves, but are shielded for safety)
Wi-Fi Routers & Cell Phones (emit radiofrequency waves, still under study for health effects)
Reference: World Health Organization (WHO) – Electromagnetic Fields & Public Health
Radiation is invisible and odorless, making it impossible to detect without proper instruments. A home radiation measurement helps ensure a safe living environment by identifying potential hazards.
Detecting Radon Gas
Radon is a naturally occurring radioactive gas that can seep into homes from the ground.
It is the second leading cause of lung cancer after smoking.
Testing is the only way to know if your home has high radon levels.
Reference: U.S. Environmental Protection Agency (EPA) – Radon
Checking for Radiation in Building Materials
Some materials, like granite, concrete, and brick, contain small amounts of radioactive elements.
While usually low-risk, high concentrations can contribute to indoor radiation exposure.
Reference: U.S. Environmental Protection Agency (EPA) – Radiation from Building Materials
Identifying Contaminated Household Items
Certain older products, such as antique watches with radium dials or uranium-glazed ceramics, may emit radiation.
Measurement ensures these items do not pose a health risk.
Reference: U.S. Environmental Protection Agency (EPA) – Radiation in Consumer Products
Peace of Mind for Your Family
Expecting parents and families with young children may want to verify their home environment is free from harmful radiation.
Regular measurements provide reassurance and guidance on safety improvements.
Reduce Radon Levels (Main source of natural radiation)
Test your home for radon, especially basements and lower floors
Increase ventilation by opening windows and using fans.
Seal cracks in floors and walls to prevent radon entry.
Install a radon mitigation system if levels are high.
Reference: U.S. Environmental Protection Agency (EPA) – Radon
Limit Exposure to Radiation in Building Materials
If renovating, choose low-radiation materials (e.g., avoid high-radon granite).
Test older homes for radioactive building materials.
Reference: U.S. Geological Survey (USGS) – Radioactive Elements in Building Materials
Reduce Radiation from Household Items
Check for antique items like radium-painted watches or uranium glassware.
Dispose of or store such items safely if they emit high levels of radiation.
Reference: U.S. Environmental Protection Agency (EPA) – Radiation in Consumer Products
Be Mindful of Electromagnetic Radiation (Non-Ionizing)
Use speaker mode or headphones instead of holding cell phones to your head.
Place Wi-Fi routers away from bedrooms and limit unnecessary exposure.
Follow manufacturer safety guidelines for microwave ovens and electronic devices.
Reference: World Health Organization (WHO) – Electromagnetic Fields
Find out how our expert testing process works, what to expect, and how we help ensure your home’s safety.
The duration of a radiation inspection depends on the size of your home and the type of testing required. On average, a fast screening takes less than one hour while a comprehensive testing might take up to four to five hours, but this may vary based on the following factors:
After the inspection, we provide one week turnaround for the final report with findings and recommendations.
It is up to the customer to decide which areas they would like to test, but certain locations are more likely to have elevated radiation levels. Testing these areas helps ensure a safer living environment:
Basement & Ground Floors (Radon Gas)
Radon seeps in from the ground and accumulates in low-lying areas.
Testing is crucial, especially in homes with basements or slab foundations.
Building Materials & Walls
Some materials, like granite countertops, concrete, or bricks, may contain natural radiation.
Testing can determine if they contribute to indoor exposure.
Bedrooms & Living Areas (Electromagnetic Fields - EMF)
Areas near Wi-Fi routers, electrical panels, or power lines may have higher EMF levels.
Some people test these areas to minimize prolonged exposure.
Household Items & Furniture
Antique watches, uranium glass, old smoke detectors, and certain ceramics may contain small radioactive sources.
Testing ensures these items are safe for indoor use.
A radiation test is not always required when purchasing a home, but it is highly recommended to ensure a safe living environment. Here’s why:
Radon Gas Levels May Be High
Radon is a naturally occurring gas that can accumulate in homes, especially in basements and ground floors.
Since radon is the second leading cause of lung cancer, testing before buying can help you make informed decisions.
Some Building Materials May Emit Radiation
Materials like granite countertops, concrete, and certain tiles may contain small amounts of radioactive elements.
Testing can help determine if they contribute to indoor radiation exposure.
Older Homes May Contain Radioactive Items
Some homes have antique items, like radium-painted clocks or uranium glassware, which can emit low levels of radiation.
Testing can identify potential concerns before you move in.
Peace of Mind for You and Your Family
A radiation test ensures that your new home is free from unexpected hazards.
If high levels are found, you can negotiate with the seller or take steps for mitigation.
While not mandatory, a radiation test adds an extra layer of safety and confidence when making one of the biggest investments of your life.
Copyright © 2025 CZ Residential Radiation Consulting - All Rights Reserved.