Rock Wool Insulation Guide
by Mark Row
What is rock wool?
Rock wool is one type of insulation that is made from natural minerals and rocks. It’s the most common form of insulation used in the construction industry around the world because of its excellent ability to block sound and heat.
Rock wool insulation is produced by heating minerals and other raw materials in a furnace at a temperature of about 1600 ° C, and then blowing a stream of air and steam through it. That creates a mass of intertwined fine fibers, bound together with starch. Rockwool and Knauf are the leading manufacturers on the market of this insulation material.
As well as other types of insulation, rock wool plays a major role in reducing energy consumption. It comes in a form of rolls and slabs, designed for different insulation purposes (universal, flexible, cavity), and is excellent in blocking heat from passing through it and preventing the spread of fire, mildew growth, moisture resistance and other serious health hazards and structural issues. Since it’s made from natural materials studies have shown that rock wool has little or no health risk.
The rock wool insulation r-value is approximately R-2.5 to R-3.7. Though mineral wool is no longer classified as a skin irritant, wearing protective clothing and safety goggles is recommended during installation.
Types of rock wool insulation
Rockwool
50mm Rockwool RW5 Universal Insulation Slab.
50mm Rockwool Cavity Insulation.
50mm Rockwool Flexi Insulation Slab.
Knauf
25mm Earthwool RS45 Universal Insulation Slab.
50mm Earthwool RS60 Universal Insulation Slab insulation material is the same as the RS45. Only difference is the in material density. Density of RS60 is 60 kg/m3 and density of RS45 is 45 kg/m3.
50mm Earthwool Flexible Insulation Slab.
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