Free Delivery over £100+ 5on Trustpilot Browse our popular stoves Fast Mainland UK Delivery Buy stoves with install packs Call 01670 206 999 for help

Leca 50L Bag (90-LECA)

National Flues offers the premium Leca 50L Bag, a superior chimney insulation solution designed to enhance your flue’s performance. This lightweight expanded clay aggregate product is ideal for improving heat retention, boosting flue draw and ensuring long-lasting durability. Read more...
Leca 50L Bag
IN STOCK
Product Thumbnail
Now only £27.99
Give us a call if you find it cheaper and we'll normally price match.
  • Fast deliveryFriday, November 14th*
  • Best PriceCall us to beat any price you found online.
  • Secure checkoutCard· Google/Apple Pay· Klarna· Paypal

 

Payment Options

At a Glance

  • Lightweight & stable design
  • Superior heat retention for improved draw
  • Unique cellular structure for optimal insulation
  • Completely insoluble and exceptionally durable

We Won't Be Beaten On Price

At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:

  • Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
  • Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
  • Operational Efficiency: We have streamlined processes to reduce overhead.

Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).

“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.

Have Questions?
Phone: 01670 206999
Email: sales@nationalflues.com

The Leca 50L Bag provides an outstanding solution for insulating your chimney flue. This lightweight and stable material features a unique cellular inner structure, which significantly enhances insulating qualities. Leca retains heat where it's most needed, improving the overall draw of the flue, thus ensuring an efficient and safe heating system.

Completely insoluble, Leca does not dissolve, making it the ideal choice for a long-lasting chimney insulation solution. Whether you are a retail customer looking to improve your home heating or a trade customer seeking reliable products, the Leca 50L Bag is a top-notch option.

SKU: 90-LECA

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, November 14th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

This is us — real advice over the phone, or at the counter, and real stock in our warehouse.

Customer being served at the National Flues trade counter
Trade counter Installer collection & same-day help.
Team helping customers at the counter
Advice Real people on the phone to spec the right parts.
Friendly member of the team at the front desk
Here to help Friendly, straight answers from HETAS approved experts.
Warehouse shelves with boxed flue components being picked for dispatch
Warehouse Orders picked & dispatched nationwide.
Talk to the team Visit our trade counter
Technical Specifications
ProductLeca 50L Bag
Capacity50 Litres
MaterialLightweight Expanded Clay Aggregate (LECA)
ApplicationChimney flue insulation
Key FeaturesInsoluble, stable, superior heat retention, unique cellular structure
To install the Leca 50L Bag, first ensure the chimney flue is clean and free of debris. Pour or pack the LECA carefully around the flue to create an even insulating layer. Follow local building regulations and the manufacturer's guidelines for a safe installation. Optional accessories, such as flue liners or support brackets, are available to further optimise the installation and ensure long-term performance.

LECA stands for Lightweight Expanded Clay Aggregate. It is a versatile and efficient material used for insulating chimney flues and other construction purposes.

LECA provides excellent heat retention and stability for your chimney flue, improving draw and efficiency. Its insoluble nature ensures long-lasting performance without deterioration.

LECA’s unique cellular inner structure enhances insulating qualities, helping to retain heat and improve the draw of the flue, leading to a more efficient and safer heating system.

Yes, LECA is an eco-friendly option for flue insulation. It is made from natural clay, which is expanded and then becomes lightweight and highly insulating.

LECA is suitable for most chimney flues and is particularly effective in improving the performance and efficiency of wood-burning and multi-fuel stoves.

LECA is typically poured or packed around the flue inside the chimney stack. This ensures an even and effective insulating layer.

You can purchase the Leca 50L Bag directly from National Flues. We offer secure online payments for retail customers and trade accounts with competitive pricing and reliable delivery nationwide.

 

Call the Experts   8am-5pm
👀 5 people watching this