Boiler Jacket Insulation

gmcinnes

My large, hot-water boiler jacket insulation has disintegrated. What's a good choice to replace it? It was previously 1" fibreglass, by the looks of things, but it may be worth it to replace it with something like this: http://www.buyinsulationproductstore.com/roxul-enerwrap-80/ to decrease standby losses.

What do you think?

EBEBRATT-Ed

Yes, mineral wool is good quality insulation. You could use that or 2" fiberglass duct wrap if it will fix under the boiler jacket.

I would remove the jacket panels and old insulation. Clean loose debris from the jacket panels. Put some spray glue on the panels and stick the insulation on.

gmcinnes

That mineral wool linked to has a (high-temp appropriate) foil facing, which seems it would be effective in reflecting back radiant heat back to the huge cast-iron wet legs. Think that's worth considering, or is it overkill?

EBEBRATT-Ed

yes