Glass Block R Value
For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15.
Glass block r value. Glass block windows offer thermal insulation values that are similar to double pane windows but the cement mortar that holds them in place performs a better job of blocking air infiltration than traditional vinyl or aluminum window frames. Energy and the environment. Such low values of thermal conductivity indicate why these windows can allow seven to ten times more heat to escape per sq. That means that glass block windows never contribute to a drafty room.
Glass block can provide more than double the thermal resistance r value of single glaze 1 8 thick plate glass. A low e double glazed window can have an r value of 3 5. The r value for the premiere glass block is 1 96 which is equivalent to a double pane thermal window. Truly windows can be energy holes.
In simple terms r values measure the effectiveness of insulation and a higher number represents more effective insulation. The following table is in metric form. The differences between the shading coefficient of glass block and flat sheet glass is also significant. Foot than the rest of the exterior.
We carry a large selection of glass blocks for multiple construction applications. John wiley sons inc 2006. A single layer of uncovered glass window has an r value of 1 75. Glass brick has an r value between 1 75 and 1 96 close to that of thermopane windows.
In construction the r value is the measurement of a material s capacity to resist heat flowfrom one side to the other. There are many websites on the internet which have imperial building material r value numbers but not so many with metric r value numbers. Concrete homes magazine web search 5 18 2010 r value for concrete glass other materials wikipedia web search 5 18 2010 citing ristinen robert a and jack j. Click here to go to our calculator to understand the real r value of a ceiling system or wall system with gaps in the insulation.
Visit us today to select the perfect style of glass block for your job. R values of uninsulated concrete.