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Thermowood Board on Board Cladding

Thermowood is quite knotty and is a dark brown in colour. It's durable, stable and takes a paint well.

Photo: Samples of Thermowood

Thermowood Board on Boardcladding

Work out a Price Below

Please note that iWood is a wholesale timber merchant, and to maintain such competitive prices, we have a minimum order amount of £750.00 ex VAT for delivery (£350.00 ex VAT for collection).

1) Click to choose a Board on Board Cladding profile

IWC28 Board on Board (174mm face)
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IWC28 Board on Board (174mm face)
IWC29 Board on Board (100mm face)
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IWC29 Board on Board (100mm face)

2) Click to choose a grade of Thermowood

Select Sawfalling Cladding
Sawfalling
Sawfalling is a knotty grade of timber. Most will be sound, however, we recommend ordering 10% extra for cutting around any dead knots.

3) How much Thermowood Board on Board Cladding do you need?

 
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How to measure for cladding

Working With Set Lengths

Product Description
Treatment

Thermowood Board on Board Cladding

Thermowood is a very durable and cost effective alternative to Oak and Cedar cladding. It is a softwood which has been thermally enhanced to remove as much moisture as possible to leave the timber as stable as it possibly can be.

Thermowood is becoming more and more popular, especially with Siberian Larch being almost impossible to get hold of. One of the reasons for this is because it can take a paint really well because of how dry it is.

What Thermowood Board on Board cladding brings to the table is easy to see. It utilizes technology to bring out the very best in a traditional material to offer you value for money. To put this into context, the softwood used for Thermowood treatment may last 5-10 years externally, however, this process allows them a shelf life of over 30 when well maintained.

What Profiles do iWood Offer?

We offer two different profiles of Board on Board cladding. Both are made up of Planed All Round boards with the true difference being how they are fitted. The website displays them as different profiles to help make it easier to work out prices.

These profiles are designed to be fitted vertically with a waterproof breathable membrane in behind.

IWC28 - The more traditional and commonly seen Board on Board cladding in the fashion of Yorkshire boarding. The back boards are fitted 29mm apart with the top boards covering 20mm of each board underneath. When fixing make sure you don’t fix two of the boards with the same screw or nail, this helps to reducing splitting in the timber.

IWC29 - This profile provides a smaller 5mm gap between the rear boards (Or front if you reverse the fitting). The profile still allows for a 20mm overlap either side.

What Grade is Thermowood Supplied in?

Our Sawfalling grade of Thermowood is a fairly knotty timber, similar to the British timbers we supply. All the knots should be sound, however, we do recommend allowing for 10% waste in order to cut around any knots you don’t like the look of, the advantage of Board on Board cladding is you can choose the face you wish to display as they are fully reversable.

If there is anything you are unsure of please get in touch and we will help in any way we can.

Example Pricing for Thermowood Board on Board Cladding - Boards in Stock Machined to Order
Price From £10.69 ex VAT per meter (Profile: IWC28 Board on Board (174mm face) - Grade: Sawfalling - 1m)
What do our Customers Say?
Very well designed web site - simple to use but actually containing a large amount of complex information .. good pricing too. Helpful telephone assistance.
- Paul Scott
I have ordered from you before with no problems.
- Scott Parker
Your website, ordering and delivery is the best I've ever seen. We deal with alot of timber companies and I wish everyone was as easy as you!
- Ashley - AJ Firewood and Timber
Good communication and website. Easy to use and understand. Many thanks.
- Chris Waterhouse
Pleased with the quality of oak and price, and very friendly and helpful staff when you collect. Thank you.
- Bryan Martin
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Architect / Design Specify

Sawfalling
Product Code: IW-18-64-21-22

Specify: Sawfalling Thermowood External Cladding Board on Board Cladding from iWood Timber

Some commonly asked questions

DELIVERY TIMES

Our timber is imported straight from sawmills on the continent. Our usual lead times are therefore 10 to 14 (15-20 for Feather Edge) working days.

WHAT ARE YOUR DELIVERY COSTS?

We calculate our delivery costs based on how far away you are from us, to get more information on this please check out our shipping costs page.

DELIVERY DAY

Our delivery lorries visit different parts of the country on different days, so once your order is ready we will work with you to arrange a delivery day for when one of our lorries is in your area. We will always arrange the delivery day in advance with you.

DELIVERY TIMES

We deliver weekdays Monday to Friday between the hours of 8am to 5pm. Our delivery vehicles will have multiple jobs on them which can affect the delivery time to you, depending on factors such as traffic and how long it takes to offload the previous jobs. The driver will call you in advance with an estimated time of arrival to make sure you'll be there.

HOW DO I PLACE AN ORDER FOR CLADDING?

You can place your order online by working out your price above and adding your items to your shopping basket. You can then check out and your order will be processed securely and a confirmation email sent. Once your order arrives in our depot, we'll give you a call to arrange delivery.

CAN I ORDER SAMPLES?

Yes you can, you can order samples of certain timbers at www.iwood.co.uk/sample-request/. If the species you need isn't there please give us a call or talk to us on our online chat.

The timbers shown are planed all round samples and are not profiled.

Still Have Questions?

Call our seasoned sales team on 01889 597 281.

Send us a message through our Contact Form.

Email your cutting list to enquiries@iwood.co.uk.

To get a price, you can type in how many square metres of cladding you need. It's very easy to work out.

We're going to work out the total area of one side of a building, then subtract the windows and doors, then add 10% extra for wastage.

1) For each wall that you’re cladding, measure the full width and the height in metres to work out the total area.

In this (expertly designed) example, the frontage is 9 metres wide and 4.7 metres high. 9 x 4.7 gives a total 42.3 square metres.

How to measure For Cladding Step 1

Total area of frontage = 9 * 4.7 = 42.3 square metres

2) Work out the area of the doors and windows

In this house front there are four windows and a door. Measure the width and height of each window and door, then add the areas together:

How to measure For Cladding Step 2

  • Window 1: 1.9 x 1.2m = 2.28 square metres
  • Window 2: 1.2 x 1.2m = 1.44 square metres
  • Window 3: 1.2 x 1.2m = 1.44 square metres
  • Window 4: 1.9 x 1.2m = 2.28 square metres
  • Door: 1.0m x 2.0m = 2.00 square metres

Total area of windows and doors = 9.44 square metres

3) Subtract the area of the doors and windows from the total area of the wall.

We now have our total area (42.3 square metres) and the total area of the doors and the windows (9.44 square metres). Because we don't want cladding to cover the windows and door, we take the door and window area away from the total area.

Total area to clad = 42.3 – 9.44 = 32.86 square metres to clad

4) Add at least 10% spare for wastage

We recommend ordering at LEAST 10% more cladding than you've measured for to account for the required cutting and shaping.

32.86 square metres + 10% = 36.146 square metres. In this case, we'd round it up to 37 square metres.

Total to order = 37 square metres

Do the same for any other sides of the building, add them together and you'll have your grand total.

When working with set lengths it is important to take into account any waste.

This is easy enough if you can select the exact length you need, however, that isn’t always the case which is where you need to take a bit more care when ordering. If you can select the length you want, our website will automatically work out the number of pieces required, otherwise you will have to work out the additional quantity.

So for example, if you are cladding a wall that is 2.3m high and 6m wide (as seen in the below image) with vertical cladding, you may want set lengths so that you have no vertical joins.

Set length Example Wall

To work out your coverage you will need to do the quick calculation to work out your area:

Square Metre Calc

Height x Width = Square Metres
2.3 x 6 = 13.8m2

Once we have this we can work out your linear meters (Our website will let you enter either square or lineal metres as a quantity and will automatically work out the other for you).

The linear metres required depends on the profile, so for this example we are using IWC1 which has a 135mm face.

Linear Metre Calc

Square Metres / Face (in metres) = Linear Metres
13.8 / 0.135 = 102.22

Set length Example Quantity

This is where we need to work out what quantity you actually need. For a 2.3m length in this example, the closest set length is 2.44m so to get a price the iWood website will do the following calculation.

Number of Pieces Calc

Linear Metres / Length of Pieces (Rounded to next highest number) = Number of Pieces
102.22 / 2.44 = 41.89 – Rounded to 42

Now to work out the actual number of pieces we need, we need to change that calculation to this:

Linear Metres / Length Wanted = Actual Number of Pieces required
102.22 / 2.3 = 44.44 – Rounded to 45

So, with the first calculation we would have been 3 pieces short.

So now we need to work out the actual number of lineal metres we need in order to not be short on order. So now we need to rework out our quantity.

Number of pieces needed * Length of Pieces = Actual Quantity
45 * 2.44 = 109.8

Enter the new Actual Quantity into the linear metres and you will get the correct price.

We do recommend adding 10% waste on all cladding orders just to account for any cutting that needs to be done on site.

Wastage Calc

Qty (either square metres or linear metres) * 1.1 = total with 10% waste.