Refractory Insulation Repair Wander

Why Refractory Insulation Matters More Than You Think Boilers are built to withstand high heat, but the materials that line their fireboxes and combustion chambers have their limits. Refractory insulation is the layer that protects the boiler shell from extreme temperatures, contains the heat where it belongs, and helps maintain thermal efficiency. Over time, though, that insulation can crack, spall, or erode. When it does, the problems often creep up slowly - higher fuel b