Vermiculite 100L Bag

Vermiculite 100L Bag

Availability: In Stock

Free Delivery


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  • Stove Size Calculator - calculate the size of stove you need
  • Stove Beginners' Guide - see our beginners' guide to buying a stove
  • Twin Wall Flue Design - 8 twin wall flue designs to consider before installing your stove

Vermiculite V4 Coarse

Vermiculite V4 is normally supplied in plastic sacks containing 100 litres (approximately 3.5ft3).


  • Loft insulation
  • Packaging
  • Loose-pour aggregate
  • Backfill for firebacks and boilers
  • Firebase embers
  • High temperature insulation
  • Wicking agent
  • Chimney lining

It can be used to pour back down the chimney filling the void between the brick chinmey and the flexible flue liner.

This will improve the performance of your stove by ensuring the flue gases stay warm enough to escape quickly therefore ensuring the draw of the chimney stays strong.
It also massively reduces condesation of the flue gases.



Manufacturer Gr8Fires
Weight 15 kg
Colour No
Height (mm) No
Width (mm) No
Depth (mm) No
Delivery, Returns & Guarantee

Free UK mainland delivery on all orders

We offer free delivery of all in-stock items to UK mainland addresses within 3-5 working days. There is no price restriction: if it’s available and you live on the UK mainland, you will not have to pay a penny for delivery.

How delivery works

Our products vary in size from small parts and accessories to large appliances. On that basis, we have to tweak our delivery method based on your order. Depending on the size of the items you buy, they could be delivered by Royal Mail, DPD or a pallet delivery service.

Within a day or two of placing your order, you will receive a dispatch email confirming that your order will soon be leaving us on its way to you. Your dispatch email will contain details about the delivery method(s) we’ll be using for your order and, where appropriate, information on how to track your order or confirm with us a precise delivery day.

Typical delivery of wood-burning stoves and other appliances

All wood-burning stoves are delivered by pallet within 3-5 days of your order being placed (subject to stock availability). We understand that it is important to have a clear idea of when to expect the delivery so that you can make arrangements to receive your new appliance.

You will receive information on how to confirm your delivery date by email once the order has been dispatched. Unfortunately, due to the nature of these deliveries, it is impossible to give a precise delivery date earlier than this.

Please keep in mind that pallet delivery is available to the kerbside only. Drivers are unable to carry items into the property, across uneven terrain or up steps, so please make provisions to move the appliance or pallet to your preferred storage location on the day of delivery.

Offshore and island deliveries

Unfortunately, we are unable to deliver to postcodes beginning with BT or to any address in Ireland. For orders that are to other offshore or outlying UK addresses, please contact us by email or phone via the details below to check delivery costs.

Out-of-stock orders

Are you interested in an item that is currently out-of-stock? Please contact us by email or phone via the details below for an estimate of how soon the item would be delivered to you.

Any delivery questions?

If you’ve got questions relating to the information above or any other queries about delivery, feel free to call us on 0121 271 0221 or email


1. If you wish to cancel your order:

  • you can notify us by email to before we have dispatched the goods to you;
  • where goods have already been dispatched to you, email and return the goods to us in accordance with clause 2 below.

2. You can return goods you have ordered from us for any reason at any time within 14 working days of receipt for a full refund or exchange. The costs of returning goods to us shall be borne by you unless they are delivered damaged, faulty or not as described.

3. A full refund of the amount paid will be given as soon as possible after an order is cancelled.

4. The rights to return the goods to us as referred to in clause 2 will not apply in the following circumstances: -

  • to any products that we have made or customised specifically for you

The provisions of clause 4. does not affect your statutory rights.
If you fail to take reasonable care of the goods before they are returned to us, and your actions result in damage or deterioration, we may charge for the reduction in value.




Finance Options

Spread the cost with our simple finance deals including 0% APR 

With our easy finance deals you could get this product now, then spread payments over 1 year for 1 YEAR INTEREST FREE at 0% APR.

Your new stove is a long-term investment that will save money and keep your home warm for years to come.

That’s why we feel it’s important that you don’t sell yourself short at this stage. Remember, your stove will be taking price of place in your property, so it makes sense to get the one you really want.

Sometimes life doesn’t wait until you’ve had the chance to save. So, rather than settling for a stove you can afford to pay for up front, why not spread the cost and start saving on your energy bills straightaway?

Terms and conditions apply. *

How does it work?

Finance is available on any basket purchase over £350 with just a 10% deposit and receive 1 YEAR INTEREST FREE at 0% APR.

Alternatively you can choose to pay the balance over a longer term of 2 or 3 years** – whatever makes most sense for you.

Get more information on how it works or just give us a call on 0121 271 0231 for a chat to see if you qualify for a great finance deal.

Why buy with finance?

• Spread the cost over 1, 2 or 3 years

• Get 0% APR when spreading the cost over 1 year

• From £11.69. per month e.g The Mazona Crete 5kW paid over a three-year period***

• Monthly Payments by direct debit

• Minimum 10% deposit

• Buy the stove you want now, pay later


** 2 & 3-year finance available at 19.9% APR (Typical)

*** Mazona Crete £350.00 less £35.00 Deposit, 36 monthly payments of £11.69 Total Amount Repayable £455.84 19.9% APR (Typical). Finance is available to persons aged 18 and over. All finance is Subject to status  

*GR8 fires is acting as a credit broker and offers finance products from Omni Capital Retail Finance Limited. Authorised and regulated by the Financial Conduct Authority Licence: and a member of the Finance and Leasing Association. For more information, please visit

 For more information on consumer finance please visit the frequently asked questions on our website


Products Questions:

Posted by john nickeas on Wednesday, 15 April 2015


How much vermiculite for 7mt chimney 230x230 mm


  • Posted by Robin Harris on Wednesday, 15 April 2015
    We would recommend double-checking with your installer on this.

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Customer Reviews 1 item(s)

Good service and delivery
The product seems good but I am using as as a 'concrete' mix to insulate a pizza oven so only time will tell how effective it is
Review by Colin / (Posted on 28/06/2016)