Got a question?

There are basically three choices.

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If you are building new property, ROCKWOOL Cavity Wall Batts will provide maximum energy savings. These fully fill the cavity, yet their special water repellency prevents water transmission across the cavity. If 'low energy' design is involved, wide cavity structures can use double thicknesses of ROCKWOOL Cavity Wall Batts to create improved U- values.

The second choice is ROCKWOOL High Performance Partial Fill Cavity Slab. This is a system which allows a cavity to be maintained by clip fixing the special dual-density slabs against the inner leaf. This specially engineered product offers enhanced performance due to the consistent close fit achieved against the uneven surface of the inner leaf masonry.

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The third alternative is for both new-build and existing property (subject to survey). ROCKWOOL ENERGYSAVER® Cavity Wall Insulation is a blown wool system operated by Approved ROCKWOOL Installers subject to BBA inspection. Holes are drilled at pattern intervals in the outer (or inner) leaf of the cavity wall and granulated ROCKWOOL is blown into the cavity space to fill to a pre-determined density. The holes are then made good with matching mortar. This system achieves effective improvement of U-values especially for existing poorly insulated houses. Domestic installation carries a 25 year CIGA guarantee. 

Hello all from Pittsburgh, PA.

I remodeled my Great Room with vaulted ceilings and wanted maximum R-value. The exterior side of my walls are vinyl siding, Tyvek then 1/2&#; OSB sheathing. The 2×4 stud cavity is 1&#; Extruded Polystyrene foam board against the sheathing then r-15 Roxul. During the cold winter months, I was getting bad condensation between the foam board and Roxul where it was exposed to the indoor air(no drywall). I removed the Rock wool and didn&#;t put it in the stud cavities until right before I hung my 1/2&#; sheetrock. My question is, is this going to be ok for long term as far as moisture in the wall cavity? Is the sheetrock going to prevent condensation from building up between the foam board and the Rock wool?

If you are looking for more details, kindly visit rock wool insulation board.