Rockwool Hp Partial Fill Cavity Slab 80mm X 455 X 1200 (4.37m2)

Product Code
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€189.95 €154.43

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The ROCKWOOL High Performance Partial Fill Cavity Slab, a semi-rigid insulation solution created for masonry cavity wall construction, is a durable cavity wall insulation solution made of renewable stone wool fibres. It withstands typical conditions, maximises thermal performance and provides a fire-resistant insulation. It has been specially designed to absorb any irregularities on the inner leaf and eliminate ‘stand off’. These features in turn maximise the product’s thermal performance effectively whilst also withstanding on-site rigours to ensure the longevity of -the external wall construction. The fire resistant, mineral wool insulation product creates slabs which increase energy efficiency by knitting together when tightly butt jointed to eliminate potential heat loss caused by any gaps. As a high quality and long lasting product which features a strong outer surface, the High Performance Partial Fill Cavity Slab offers a stable product that will last for the lifetime of the building. 


Euroclass A1 non-combustible  / BBA Certificate  93/2884 for use in tall buildings up to 25 metres in height.

More Information
Manufacturer Code 0
Brand Rockwool
Weight 19.9000
Delivery Rule large & heavy

Update 22 Jun 2022: * Now you can get your online order delivered nationwide.  


Now you can get your online orders delivered nationwide. 


We deliver to:

  • Zone 1: Dublin, Galway, Kildare, Limerick, Louth, Meath, Offaly, Tipperary, Wexford, Wicklow
  • Zone 2: Carlow, Clare, Kilkenny, Laois, Waterford, Westmeath
  • Zone 3: Cavan, Cork, Donegal, Kerry, Leitrim, Longford, Mayo, Monaghan, Roscommon, Sligo


Type of goods we deliver by county:

Types  of goods Available zones Descriptions
Small & light items All Zone . Products under 20kg weight & products under 2m long, (some fragile items may not be included e.g. glass/mirrors)
Large and bulky items Zone 1 & 2 Wet & hazardous bagged products, Products over 20Kg weight & oversized products


Our delivery rates

   Light & Small  Large & bulky  Free Shipping
 Zone 1  €9.99  €19.95  €300
 Zone 2  €9.99  €45  N/A
 Zone 3  €9.99  N/A  N/A


Zone Indicator

To make things simpler, we have placed an icon on the right hand corner of each products to indicate it's available delivery Zone.

Available zones Indicator Descriptions
All zone area > ALL Zone delivery icon This icon with all zone area in green, indicates this products can be shipped to all Zone.
Zone 1 and 2 only > non-zone 3 delivery icon Zone 1 & 2 in green and zone 3 geryed out, indicates this product can only be shipped to Zone 1 and 2 

Customer Delivery Advice:

Please allow 3 – 5 working days for delivery**. We will notify you by email once your order has been dispatched. (No delivery on weekends or Bank holidays).

Small -Medium items generally 1-2 working days, large/pallet/bulky up to 5 working days

If you require any further information on your order you can contact [email protected]


Click Here to see our Branch Locator.





At TJ O'Mahony we will exchange or refund any Retail unused product returned to us in its original condition within 30 days of receiving it (*)You can return any unused product to us in its original condition for a full refund or exchange within  30 days of delivery.  

This right to return does not apply to products that are non stock and only available to order such as catalogued doors, catalogued bathroomware and mixed paints which are made especially for your order.

*View our full returns policy on our Terms &Conditions Page.