Product Detail

Sauna Stones - Grade A Finnish Olivine Diabase

£ 40.00 GBP

These traditional, high quality sauna stones are noted for their durability and excellent soft steam created when water is applied. These stones are can be fitted in any sauna heater. They are available in two sizes: 5-10 cm and 10-15 cm. In the case that heaters require both grades, larger stones should be used at the base with smaller grade stones added to the top of the heater. Each box comes with approximately 20 kg of premium Finnish olivine diabase sauna stones.

For both wood burning and electric sauna heaters, stones should be filled to the rim but not exceed it. Stones should be placed to maximise the space in between. This ensures a perfect loyly as the water can cascade easily down the length of the large heating capacity and allows air to flow between them with ease. Over time, even the highest quality diabase fractures. Depending on usage, stones should be replaced once every year to every two years. This is important to maintain the voids between stones remain large enough for the through flow of water and air, and because the heat capacity of the stones relates to the size of the stones themselves. A simple way to check yourself is to measure the stones in comparison to your closed fist, once stones become smaller than this, they should be replaced.

For information on how to correctly load the stones into your heater, see our helpful guide including video demonstrations available here.

The differing stone size requirements for each stove can be found below:

Wood-burning heaters 5-10 cm stones / kg  10-15cm stones / kg     
KOTA LUOSTO & LUOSTO WATER TANK   35
KOTA INARI 40 20
KOTA KURU 14 & 14 WATER TANK   35
KOTA KURU 20   40
NARVI NC 16   50
NARVI NC 20 & 20 WATER TANK   60
NARVI NC 24   80
NARVI STONY  60 150
NARVI STEAM MASTER   100
NARVI 30   60
NARVI 50   100
NARVI VELVET 100 60
AITO 16 & 16 WATER TANK   50
AITO 20 & 20 WATER TANK   60
AITO 24 & 24 WATER TANK   80
Electric heaters  5-10 cm stones / kg  10-15cm stones / kg     
NARVI VELVET ELECTRIC 140
NARVI SLIM 30
NARVI NM 30
NARVI SOFTY 120
NARVI STONET 60
NARVI STEAM READY   80
NARVI ULTRA 50
NARVI ULTRA BIG 120
NARVI NC ELECTRIC 30
KOTA SAANA 80

Purchasing & Delivery

Before You Buy

To avoid disappointment on day of delivery, be sure to measure the area you plan to place your new sauna equipment and compare this with measurements under the product specification tab, before placing your order. Please ensure you measure any doorways (height and width) through which any large sauna equipment must pass to get to its final position. Identify any delivery obstacles and check that the sauna equipment can clear any stairs, low ceilings, sharp corners or elevators. Please note, we use independent couriers to deliver all our products and thus we cannot confirm whether the courier is willing and able to help with delivery beyond the threshold of the property. Should you require any specialist delivery support, please contact us to discuss ahead of your purchase.

Delivery

- Recorded Next Day Delivery* is available on all marked products for orders to the UK Mainland. The product will be marked as such within the product description ("Order before 2pm to guarantee next day delivery on this item") where this service is offered. The customer must order before 2pm to guarantee receipt of the product Next Day*. * Next Day Delivery guarantees next working day only, for orders within UK Mainland.

- All other products** are subject to 3-10 working days shipping time with tracked and recorded courier. Please note, some of our items are shipped direct from manufacturer. ** Excludes sauna cabins & installations.

- Sauna Cabin delivery times can vary considerably, especially those that are made to order. Please contact us for manufacturing and delivery time estimates for sauna cabins. Where installation for cabins and bespoke installations is requested, this will be completed in the next available time window which may be sometime after the delivery of goods. Please contact us to confirm delivery and installation requirements and timings.

- Expedited Delivery or installation services may be available upon request, but extra charges will apply.

Warranty Information

Manufacturers Warranty

A two year manufacturers warranty applies on all products commencing from the point of sale/purchase from Finnmark Ltd.

#1: What does this warranty cover?

The warranty covers it covers any defects in material and workmanship under normal use. A warranty claim cannot be made on domestic equipment being installed in a commercial environment.

#2: What will we do to correct problems?

In the rare case that a warranty claim is required, Finnmark Ltd provide replacements for any confirmed broken parts of a product. Where this is not possible, Finnmark may offer a replacement but the customer may be required to return the product to Finnmark Ltd or to the manufacturer, at the customers expense. The customer should follow the claims procedure laid out below.

#3: How long does the coverage last?

The manufacturers warranty covers all items purchased directly from Finnmark Ltd for 2 years commencing the point of sale/purchase by the customer.

#4: What does this warranty not cover?

The following are not covered by the manufacturers warranty:
- Theft or loss of the product.
- Usage of domestic equipment within a commercial environment.
- Damage of a product resulting from negligence.
- Damage of a product resulting from unauthorized modification of the product.
- Damage caused by natural disaster.
- Consequential and indirect damage caused.

#5: What do you have to do?

To make a warranty claim, the customer is required to:
- Provide all information required by Finnmark to assess the issue.
- Finnmark Ltd may request detailed photographs of the product. For example a heater may require photos of the elements, power supply and drivers to assess what may be required to fix the product.
- Finnmark Ltd will make a judgement based on this information as to what replacement parts may be needed or if the product needs to be returned and replaced.
- Where a replacement is granted, the customer must first return the initial product to Finnmark Ltd or may be required to be sent to the product manufacturer, this will be confirmed by Finnmark Ltd during the claims procedure. The return shall be at the expense of the customer and should be sent via a recorded courier service. Finnmark Ltd holds no liability for items lost or damaged in transit.

#6: Applicable Laws

All warranty claims are handled in accordance with the laws of the United Kingdom where Finnmark Ltd is based and registered.

Payment Information

We are currently able to accept the following payment methods:
- Credit & Debit Card (including Mastercard, Visa & American Express)
- Paypal
- Amazon Pay
- Bank Transfer