Leca® Insulation Fill

Leca %20Insulation %20fillLeca® is a special type of clay that has been pelletised and fired in a rotary kiln at a very high temperature. As it is fired, the organic compounds in the clay burn off forcing the pellets to expand and become honeycombed inside and smooth on the outside.

The resulting ceramic pellets are lightweight, free draining, insulating and have a high crushing resistance. Bagged Leca® is ideal for backfill and insulation in poured concrete foundations.

How to use Leca®:

Step 1

Use loose material to level the sub floor and then lay the bags on top.

Step 2

Continue to lay bags side by side to cover the total floor area. If a second layer is needed lay these in a brick bond pattern.

Step 3

Once at the required depth, use loose Leca® to fill holes between bags and level off.

Step 4

Lay a 1200 gauge membrane over the insulation fill. The insulated floor is ready to received the concrete slab.

Concrete %20poor %20slab

Trade Tips

  • Leca® is chemically neutral and does not contain any environmentally harmful constituents. It is safe to handle and does not need any special protective clothing or special requirements for disposal.
  • Leca® weighs 15kg light enough for a single-man lift.

Homeowner Benefits

  • Leca® does not degrade.
  • If a foundation is removed Leca® can be recycled and used again.
Added Benefits
  • Achieves the latest U-values
  • Minimal labour required
  • No Heavy Machinery required
  • Restricted access or difficult site conditions overcome with ease
  • No blinding sand is required to level hardcore or project pipework
  • Can be used in depths of up to 3 metres
  • Ideal for use on gas contaminated land
  • A natural, unharmful product

Jewson has everything you'll need...

  • Delivery service; The procurement strength of Jewson ensures that we can deliver the very best product on the market at the very best price. The majority of our transport fleet have crane off-load lorries to deliver direct to your site, in most cases within 24 hours.
  • Tool Hire; Jewson Tool Hire branches provide a range of equipment to suit all projects.
  • Product; Leca® is available loose or bagged from selected Jewson branches, just ask in your local branch for further details. DPM and concreting products are also available nationally.