Home > External Cladding > Board on Board Cladding > British Douglas Fir

British Douglas Fir Board on Board Cladding

British Douglas Fir Board on Board Cladding is a pale reddy-brown colour with quite a few knots and large grain pattern.

British Douglas Fir 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 Board on Board Cladding profile

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

2) Click to choose a grade of British Douglas Fir

Select Fresh Sawn Merchantable Grade Cladding
Fresh Sawn Merchantable Grade
Fresh Sawn Merchantable Grade has quite a few knots and a large grain pattern

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

 
OR
Get Price

How to measure for cladding

Working With Set Lengths

Product Description
Treatment

British Douglas Fir Board on Board Cladding

When looking for board on board cladding, English Douglas Fir is a very good option. Not only is it one of the most cost effective board on board cladding options we offer, it is also very durable with good stability.

Recognizable from its characterful large knots, wide grain and pinkish colour, Douglas Fir is a popular species of timber within the trade. Often used in place of oak in construction, British Douglas Fir performs very well as a cladding material.

Cut fresh from the log here in the UK, British Douglas Fir is considered the more environmentally friendly choice over its Canadian cousin.

British Douglas Fir Board on Board cladding is also very cost effective.

What are the Options for British Douglas Fir Board on Board Cladding?

Board on board cladding is for vertical fitting only, below are the profiles we supply.

IWC28 – Cut and machined planed all round, this profile is designed to have two layers overlapping. The bottom layer is fixed onto your battens spaced 29mm apart, then, lay the top layer of boards over the space creating a 20mm overlap over the bottom boards. Please do not fix the top layer through the bottom layer as this could cause splitting, fix directly into the battens.

IWC29 – Use this profile if you are looking to fix the back boards closer together. The fixing method is simple, face fix each of the wider boards with a 5mm gap then place the thinner board over the gap (with a 20mm overhang either side).

What is the Grade of British Douglas Fir Supplied?

We supply British western red cedar board on board cladding in fresh sawn merchantable grade. This is an appearance grade which has many character knots and is pink in colour making it ideal for traditional builds.

Is Douglas Fir Good for Cladding?

Douglas Fir is a very well known timber in the trade as an all round quality softwood. Douglas Fir grown in the UK has many feature knots and proves to be an excellent cladding timber due to its stability, durability, strength and distinctive aesthetic. British Douglas Fir is a class 4 durability timber based on the results of a British Douglas Fir post being embedded into ground, as a board on board cladding however, it will last much longer. British Douglas Fir Board on Board cladding is also very cost effective, the most cost effective of all our British timbers.

Can you leave Douglas Fir untreated?

Douglas Fir is a durable softwood so it can be left untreated. If left untreated, British Douglas Fir will silver overtime.

Example Pricing for British Douglas Fir Board on Board Cladding - Boards in Stock Machined to Order
Price From £7.17 ex VAT per meter (Profile: IWC28 Board on Board (174mm face) - Grade: Fresh Sawn Merchantable Grade - 1m)
What do our Customers Say?
The quality of the kiln dried oak you sent looks really good & some of the best I have seen in my 9 years of being self employed, so thank you very much for that
- Glenn
Very detailed website for ordering my exact requirements easily.
- Richard Boundy
Used before. Good value and good service.
- Julian Green
Hello iWood Team, Please find attached some pics of the workshop that I built last year using your Western Red Cedar. I am very pleased with the outcome, what an amazing material to work with. Hope that the pics are suitable for your needs.
- Bob Beckett
The order process is excellent, this is my second order with you.
- Rob Hill
Like what you see?

Tell a Friend Today!

Architect / Design Specify

Fresh Sawn Merchantable Grade
Product Code: IW-18-46-29-22

Specify: Fresh Sawn Merchantable Grade Douglas Fir, British 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 15 (Sawn) and 15 to 20 (Machined) 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.