Cold Lay Macadam - 20kg Bag

Cold Lay Macadam is a ready-to-use repair material supplied in a manageable 20kg bag, ideal for po...

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The RangeCold Lay Macadam 20kg Bag - Single Bag - Dark Asphalt Grey
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£19.99
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Product Information

Full details

The B&Q Cold Lay Macadam is an ideal solution for homeowners and trade professionals looking to perform quick, efficient repairs on potholes, driveways, paths, and general tarmac surfaces. This ready-to-use material eliminates the need for complex heating equipment, offering a straightforward 'fill and compact' process that saves significant time on site. While highly convenient for small-to-medium patches, users should note that the surface requires thorough compaction to ensure longevity and durability under heavy vehicle traffic.

All features

Model Part Number1386439
BrandB&Q

Extended Product Information

FAQs

Do I need any specialized equipment to apply this?

No, you only need a spade for distributing the material and a heavy-duty tamper or plate compactor to ensure it is firmly set.

Can I use this to pave an entire driveway?

This product is specifically designed for patches and repair work, not for laying large areas or full driveways.

How long does the material stay workable?

The material is designed to remain workable in the bag until opened. Once opened, it should be used immediately.

Is it suitable for wet weather conditions?

It is best applied in dry conditions. If the repair area is wet, remove standing water and allow the surface to dry as much as possible before application.

How deep can I fill a hole with this product?

It is recommended to fill in layers if the hole is deeper than 50mm, compacting each layer individually to ensure the bottom of the repair is as solid as the top.

Troubleshooting

Material is hard inside the bag

The bag may have been compromised or stored in extreme temperatures. Always store in a cool, dry location and check for punctures before purchase.

Repair is crumbling after a few days

This is typically caused by insufficient compaction. Ensure the area was thoroughly cleaned of debris and that you applied enough pressure to force the aggregate together.

Surface feels soft underfoot

The macadam takes time to fully cure based on ambient temperatures. Avoid driving on the repair for the first 24-48 hours if possible.

Pros and Cons

Pros

  • No heating equipment necessary
  • Easy to transport and maneuver
  • Suitable for both DIYers and professionals
  • Ideal for quick patch repairs

Cons

  • Requires manual compaction for best results
  • Not intended for laying entirely new driveways
  • Bag must be kept sealed until use to prevent hardening

Setup, Compatibility & Care

This product is compatible with existing tarmac, asphalt, and concrete surfaces. It is essential to store the bag in a cool, dry place and keep it strictly sealed until the moment of application; exposure to air and moisture can cause the material to set prematurely. When handling, ensure the area is dry, as excessive water during application can hinder the initial bonding process.

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