Colas - we go further


Colpatch is a storage grade macadam that is ideal for instant, high quality repairs to bituminous or concrete surfaces.

Colpatch can be used for carriageway repairs, patching, reinstatements and temporary surfacing.

Colpatch provides an immediate solution to potholes in roads, drives, car parks and many other surfaces.

Colpatch is formulated from penetration grade bitumen, proprietary Macfix additive supplied by Macismo Asphalt & Innovations and selected aggregates.


Why use Colpatch?

Safe and Easy to use. Colpatch has a long storage life, up to two years. Colpatch is cold applied and safe to handle. No mixing is required.


  • Patches potholes in bituminous surfaces
  • Reinstates trenches in trafficked surfaces
  • Easy and quick to use


Colpatch is available in 20kg plastic buckets and 25kg sealed bags. It can also be supplied pre-packed on pallets, in 1 tonne bulk bags or in bulk open loads.Workability can be ensured even in cold weather by simply manipulating the Colpatch.


Ensure that the surface to be repaired is clean and free from loose material, oil, grease and standing water.

To achieve a long lasting repair it is recommended that the base surface is primed with Colas Leotak. Vertical edges of the area to be repaired should be formed as far as possible and then treated with a Colas Bitukold edge sealant prior to forming joints. For small potholes, Bitukold may be used over the surface area of the hole as a tack coat. However a quick repair can be performed without any cutting out, tackcoats or edge sealants.


Apply sufficient Colpatch to over-fill the area to be reinstated, ensuring that all corners are filled by gently needing the material with a shovel to evenly spread it across the full area.

Compact the material to the surrounding level using a hand tamper or compactor/roller. For large areas and deep sections, use a vibrating plate or roller slightly wetting the drum with water. If under-filling has taken place, simply add more product and compact to level.

It is recommended that deep patches should be built up in 15-40mm compacted layers as this will result in better compaction being achieved.

Once compacted the Colpatch is ready to be trafficked.

Colpatch remains flexible for some time after application. Because the material will take up the contours of potholes naturally and form an immediate repair, it is ideal for irregularly shaped potholes.

Curing is brought about by both air drying and compaction. The rate of cure is dependent upon temperature and the weight and volume of traffic. However, under normal traffic conditions, Colpatch will not depress, track or pick up during the curing process.

Spread Rate Guide

The table shows the approximate rate of spread of various compacted thicknesses of Colpatch. Please note that the covering capacity of Colpatch may be affected by such factors as the density and grading of the aggregates, condition of the substrate and final state of compaction. On more irregular substrates, heavier rates of spread are to be expected.

Average thickness of course (mm) Colpatch (m2/t)
20 22 to 28
30 15 to 19
40 11 to 15
50 9 to 12
60 8 to 10
75 6 to 8
100 4 to 6


Keep free from frost and extremes of heat.


Colpatch is available loose, 1 tonne, 20kg plastic tubs and 25kg bags.


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