Composite Decking Calculator

To help you work out what you need we have created a custom composite decking calculator.

If you need help at any point from your design concept to installation, we offer a free design and build quotation service.

Our Composite Decking calculator will be able to give you a customised quote right away based on your measurements. You can then add the quote straight to your cart.

If you still need some extra help please feel free to call us on 0203 011 1661 or email info@alphadecking.co.uk

Decking Calculator

Step 1 - Please input your dimensions below (numbers only). The product quantities will automatically update. By default the calculator shows 3.66m lengths. You can change this to 2.2m by clicking the checkbox below. We automatically add 5% for wastage and off-cuts.

Switch to 2.2m Board Lengths

Enter Length in Meters

Enter Width in Meters

Area Image

Tip - Want to work out what you will need using a total square area? Simply enter the total square area in meters in the length input and the number 1 in the width input box. E.g for 25sqm enter 25 in the length input and 1 in the width input. This would give you required quantities for 25sqm.

Step 2 - Please check the boxes for the substructures or accessories you will require:

Pedestals

Joists 2.2m

Edge Trim

Fascia Board

Calculator Results

Based on your measurements provided we have calculated what you will need. We automatically calculate fixings needed.

3.66m Solid Commercial Grade Bullnose Composite Decking (12ft)
3.66m Solid Bullnose Composite Decking
£ 36.00 
inc VAT
£0.00
2.2m Composite Decking Board (7.21ft)
2.2m Composite Decking
£ 13.50 
inc VAT
£0.00
3.66m Composite Decking Board (12ft)
3.66m Composite Decking
£ 23.99 
inc VAT
£0.00
Joists are weatherproof, low maintenance, hardwearing support for your decking. They create a stable subframe.
Structural Composite Joist 3.66m
£ 39.99 
inc VAT
£0.00
The ultimate sealant and adhesive. Perfect for attaching corner trims to composite decking.
EB25 - 300ml
£ 11.50 
inc VAT
£0.00
Corner trims can be used to finish and complete your new decking. All trims are made from the same composite material as our decking boards and available in the same colours.
Edge Trim 2.2m
£ 8.99 
inc VAT
£0.00
Composite Fascia Board. Available in 2.2m and 3.66m
Fascia Boards
£ 11.99 
inc VAT
£0.00
Our Composite Joists are weatherproof, low maintenance, hardwearing support for your decking. They create a stable subframe on solid surfaces such as concrete
Composite Joist 2.2m
£ 9.50 
inc VAT
£0.00
Our plastic support pedestals are incredibly robust. With support heights from 150mm - 250mm, they can create a stable base for your decking.
Plastic Pedestal
£ 4.99 
inc VAT
£0.00
Screws are included.
Box of 100 Black Stainless Steel Spacer Clips and Screws
£ 32.00 
inc VAT
£0.00
Create a clean look using these hidden starter clips, perfect for creating a hidden deck fastening system.
Box of 50 Stainless Steel Starter Clips and Screws
£ 15.00 
inc VAT
£0.00
Subtotal
£0.00
inc VAT
Delivery cost is not included in the calculation. Shipping will be calculated at the checkout. Prices include VAT.

Please note our decking calculator is great for working out general material quantities, but we recommend calculating your requirements carefully to be sure you order what you need. You can also contact our team on 0203 011 1661 who will be able to provide further advice with more complex decking layouts.

Please make sure you have selected a colour option for edge trims and fascia's to add these to the cart

CURRENT LEAD TIMES - DECKING BOARDS

3.66m Boards:
Grey, Anthracite, Teak, Oak & Oyster - In Stock. Delivery will be approx 2-4 working days

2.2m Boards:
Grey, Anthracite & Teak - In Stock. Delivery will be approx 2-4 working days
Oak & Oyster - Out of Stock

Alpha Composite Decking
How does our price compare to Timber decking over 15 years?

Alpha Composite Decking price comparison to traditional timber decking based on your decking area entered into the calculator over 15 years.

Initial Material Investment includes decking boards and fixings only, no other accessories such as fascia boards, edge trims or joists.

Alpha Composite Decking
Timber Decking

Initial Material Investment

£0.00

Initial Material Investment

£0.00

Yearly Maintenance Costs

£0.00

Yearly Maintenance Costs

£0.00

Total

£0.00

Total

£0.00

Your total savings with Alpha Composite

£0.00

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Alpha Decking Essex and Surrey
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CASH ON DELIVERY

Speak to a member of the team if you would like to pay for your order cash on delivery.

Please note an online deposit paid via card will be needed.

If you wish to pay by card all card payments must be made securely online.
If you'd like to continue paying by card please click here

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