Cavity Wall and Attic Insulation

At Collum & Gregg Ltd we specialise in reducing heat loss in the following locations;

Attic insulation: Up to 30% of heat lost from a home is lost through the roof. Effective attic insulation can pay for itself within two to three years.

Wall insulation: As much as one quarter of the heat lost from a house can be lost through the walls. Properly insulating walls can reduce this by two-thirds. Badly fitting windows and external doors can account for more than one-sixth of heat loss.

Product for Cavity Wall Insulation

Collum & Gregg Ltd supply and fit Warmfill - Super sliver Bonded Bead

Super Silver bonded bead, we believe our product is superior to any other in the marketplace.

This new bead meets current building regulations. Warmfill products are Irish Agrément Board (IAB) and BBA certified which means the products and methods have been rigorously assessed to ensure durability and compliance with Irish and British building regulations and comes with a 25 year guaranntee

Technically, the most advanced solution, it makes your home feel like new. Low cost, high quality and supremely energy efficient, this Silver Bonded Bead system offers the lowest ‘u’ value of all. (The ‘u’ value is the rate at which heat passes through a wall; the lower the ‘u’ value, the more heat that’s retained.) With a ? lambda value of just 0.034 it is 15% more efficient than the Standard Solution.

Warmfill cavity insulation is a bonded bead system which is blown into the cavity in new or existing properties. The special bonding agent allows the beads to flow freely until the cavity is completely filled. The adhesive then sets, forming the beads into a bonded mogeneous heat saving mass which will not shrink, crack, settle or be unduly affected by the removal of any of the outer brickwork for alterations or window replacements.

Warmfill Super Silver Bead is manufactured by Warmfill in Northern Ireland. The product meets current building regulations (New Build) and the product is accepted by the Irish Agrément Board IAB Cert, 05/0191. Our system can be installed to existing dwellings and new build houses in less than one day.

More information can be found here:

Frequently asked questions

Information on Super Silver bonded bead

SEI information & grant application form


Product for Attic Insulation

Attic insulation is an extremely effective method of reducing the cost of heating your home. It is estimated that 25% of heat is lost through an uninsulated roof. The recommended standard of roof insulation is currently at 250mm (2002 Building Regs) and many homes fall well below this level. We have 100mm, 150mm and 200mm fibreglass available to 'top up' your existing insulation. Attic insulation will reduce your heating bills considerably.

The Collum & Gregg Product list:

Cavity Wall and Attic Insulation

Aluminium/uPVC Fasica Soffit & Gutters

Roller Shutter Garage doors

Carbon Monoxide Detectors

Gutter Hedgehog

Rain Harvesting

Collum & Gregg are NSAI Agrément Certificate (No. 05/0191 & Registration Number IAB/0191/180) & are also registered (ID Nr 10622) with the SEI to carry out work on the HES scheme.


SEI information & grant application form


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