November 2013 thanks to quick and forceful action by the marble institute of america and its legal team the doctor s show has retracted a show segment in which it reported that living in a home with granite countertops could be as bad as smoking a half package of cigarettes a day.
Marble and granite radiation.
The doctors show admits it erred in granite radon segment.
Assuming a relatively tight house with an air change rate of 0 5 per hour h 1 and using average measured dose rates from granite countertop slabs the estimated radon concentration in kitchen air would be 4 8 becquerels per cubic meter bq m 3.
Granite black crystal black.
Radiation and radon are generally lower in marbles but both marble and granite has been studied for many years on these issues.
These range from natural materials such as wood marble and granite to engineered products such as quartz stone.
One of the top picks for us homeowners is granite because it is durable and beautiful as well as affordable.
Many homeowners are increasingly worried about the level of radiation they may be getting from their granite countertops.
While natural rocks such as granite may emit radiation and radon gas the levels attributable to such sources are not typically high.
Seven days after the report the doctors show.
This concentration is less than.
Radiation from granite countertops.
We have compiled a list of thoroughly vetted nationwide fabricators to help you with your project.
Granite and marble do emit tiny but noticeable amount of radiation in different proportions.
Fabricators or installers are an important part of the stone selection process.
Marble white calcutta marble.
Both granite and marble are naturally occurring materials that were formed millions of years ago similar to minerals.
Search for the fabricators closest to you or contact us for a recommendation.
If your home has a radon level of 4 picocuries per liter pci l of air or more you should take steps to fix your home and reduce the radon level.
Here is a link for several studies from all over the world.
Some granite countertops have dangerously high emissions of radiation particularly radon gas.
Due to my concern about the radiation that granite emits i decided to pursue quartz countertops.
However some articles have circulated that claim granite is a source of harmful radiation specifically radon.
Identifying radiation in granite countertops.
Granite is very popular as material for buildings and homes especially as kitchen countertops because of their beauty durability and function.
Identifying the presence and concentration of radioactive elements in each specific granite countertop requires sophisticated instruments.