## What is Reach Barrier?

R-Value (or R-Value) is a measure of how much heat a material can radiate away from your home. A higher value means it will radiate more heat away than another material with the same thermal conductivity. For example, if you have a material with a R-value of 1.0 then it will radiate 100% of its energy away from your home. If you had a material with a R-value of 0.5 then it would only radiate 50% of its energy away from your home.

The R-Value is usually expressed in W/m² which is often abbreviated as W/m² or simply W. The term “radiant” refers to the fact that the material radiates some amount of light when heated.

## How does Reach Barrier Work?

R-value is measured in watts per square meter (W/m²). You can think of a unit called a watt as being equivalent to one joule of energy per second. One joule is equal to one calorie of energy. So, a 1 watt light bulb uses one calorie of electricity every second!

While a 1 watt light bulb uses one unit of energy per second, a square meter of house wall or ceiling will not. That’s because it is in contact with the rest of the room, which you are also heating.

In fact, if you were to put your hand against the wall, it would be warm but not hot. You would also be able to hold it there for much longer than if you were touching a 1 watt light bulb.

In the same way, R-value is not just a simple measurement of how good one material is compared to another. It is also measured under laboratory conditions.

In the case of R-Value, this means that the wall or ceiling is at an even temperature, and then heat is applied for a period of time. During this period of time, the heat that is applied is removed from the material and the temperature is allowed to stabilize. This is then repeated many times and an average is taken.

The R-Value is the average amount of joules of heat energy that it takes to raise the temperature of 1 square meter of that material by 1 square meter temperature. The R-Value is also rated between 0 and 4, with 4 being the best.

The higher the R-Value, the better a material is at resisting the transfer of heat through it.

## What is the best kind of Reach Barrier to use?

The best reach barrier would be a product like our Installing Reach Barrier Silvertanium Radiant Heat Blocking Material. This reach barrier reflects over 75% of the radiant heat that is trying to pass through it. This radiant heat is what causes you to feel hot in your home or office.

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