British Douglas Fir Rainshield Cladding

British Douglas Fir Rainshield Cladding is a pale browney-red colour containing attractive, sound knots.

British Douglas Fir Rainshield Cladding

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 Rainshield Cladding profile

IWC8 Rainshield 142mm (138 face) x 19mm
IWC8 Rainshield 142mm (138 face) x 19mm

2) Click to choose a grade of British Douglas Fir

Select Fresh Sawn Merchantable Grade Cladding
Fresh Sawn Merchantable Grade
This grade has quite a large grain pattern, is generally a pale reddish-brown colour and is quite knotty compared to the imported Douglas Fir.

3) How much British Douglas Fir Rainshield Cladding do you need?

Get Price

Related Products

Product Description
Fitting Guidance

British Douglas Fir Rainshield Cladding

We offer a standard British Douglas Fir Rainscreen Cladding which is profile IWC8. IWC8 can only be fitted horizontally and is fitted with around a 12mm gap (click on 'more information' next to the profile above for a diagram).

Home grown Douglas Fir is one of the most versatile British softwoods you can buy as it is useful for external purposes like cladding, and when purchased as beams can also be used for constructional purposes. Our British Douglas Fir cladding is graded as 'Fresh Sawn Merchantable', which is quite knotty when compared to its imported counterpart.

British Douglas Fir naturally varies in colour and can be anything from a pale red to a light orange. The variation of the timber is what makes it so appealing for use because it provides you with a unique product.

We are selling more and more British Douglas Fir as customers look towards British Timbers over foreign alternatives. We are proud to support British Forests which are well managed and help to gear the supply of timber towards making it a reliable resource.

Usually, we supply British Douglas Fir rainscreen cladding in random lengths of 3m and longer. If you have any requirements for exact lengths then please give us a call on 01889 279 018 or talk to us on the online chat so that we can discuss and confirm the availability of your requirements. If we can supply the lengths you need please enter them into the “Special Instructions” box on the shopping basket page.


Most people leave their timber to go the traditional silver-grey in the sun. We recommend talking to if you would like to treat your timber. If you do decide to treat your timber, it needs to be treated all the way round including the ends to prevent moisture getting in at all.

Example Pricing for British Douglas Fir Rainshield Cladding - Boards in Stock Machined to Order
Price From £3.93 ex VAT per meter (Profile: IWC8 Rainshield 142mm (138 face) x 19mm - Grade: Fresh Sawn Merchantable Grade - 1m)
What do our Customers Say?
It was so easy.
- Shkumbin Sufa

Used previously and been very satisfied with service and value.
- Andrew O'Dare

I felt the ordering process was very straightforward, your pricing very good and response when requesting a sample was very prompt
- Steven Boyd

Have used before. Great products and service.
- Jeff Benson

Very easy. Please don't change it!
- David Le Versha

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Architect / Design Specify

Fresh Sawn Merchantable Grade
Product Code: IW-18-46-29-4

Specify: Fresh Sawn Merchantable Grade Douglas Fir, British External Cladding Rainshield Cladding from iWood Timber

Some commonly asked questions


Our timber is imported straight from sawmills on the continent. Our usual lead times are therefore 10 to 15 (Sawn) and 15 to 20 (Machined) working days.


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.


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.


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.


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.


Yes you can, you can order samples of certain timbers at 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

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.