grade selection
Choosing the right rock wool: density, thickness and temperature rating
Rock wool density and thickness: how line temperature picks the rockwool grade, how duty picks the thickness, and how pipe size picks the roll width.
Rock wool insulation guides
Technical articles on choosing a rock wool blanket grade by hot-face temperature, sizing thickness, wire mesh types and fitting rolls to pipes, vessels and ducts.
All guides
corrosion
Corrosion under insulation (CUI): why chloride content matters on stainless steel
Corrosion under insulation explained: the two mechanisms, the water behind them, and what a chloride ppm figure means for stainless steel pipework.
comparison
Rock wool vs glass wool vs ceramic fibre: choosing the right wool for the temperature
What rockwool, fibreglass and ceramic fibre are each made of, what temperature figure every class publishes, and where rock wool is the wrong answer.
materials
Rock wool material: what it is made of and how
Rock wool material explained: the basalt and dolomite feedstock, the melt and spinning process, and how rockwool, stone wool and mineral wool differ.