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Decking Calculator online
Use our Decking Calculator to help you determine how many deck boards, edge trims and accessories you need for your next project. Choose from our FSC-certified traditional timber decking, architectural timber decking or low-maintenance composite decking made from 95% recycled plastics.
Choose your shape:
Enter your dimensions:
We recommend having 10%
wastage to allow for those awkward angles and to make sure you don't
come up short
The gap allowance is the distance side by side between each board. This
is a fixed value to allow for shrinkage between the seasons and is the
gap you'll have once clips are assembled.
Please select which type of board you want to use:
URBAN Composite Decking Boards
IRO Timber Decking Boards
Habitat+ Composite Decking Boards
Smooth & Grooved Timber Decking Boards
Please select the board colour/size
URBAN Composite Deck Board | 3.6m x 138mm x 22mm | Arran
URBAN Composite Deck Board | 3.6m x 138mm x 22mm | Mull
URBAN Composite Deck Board | 3.6m x 138mm x 22mm | Jura
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Charcoal
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Driftwood
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Mountain
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Dolphin
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Natural
Habitat+ Composite Deck Board | 3.6m x 135mm x 22mm | Rydal
Habitat+ Composite Deck Board | 3.6m x 135mm x 22mm | Grizedale
Habitat+ Composite Deck Board | 3.6m x 135mm x 22mm | Bowness
Timber Deck Board | 3.6m x 150mm x 32mm | Green Treated
Timber Deck Board | 4.8m x 150mm x 32mm | Green Treated
Please select which sides you would like to add skirting trim:
URBAN Composite Skirting Trim | 2.4m x 100mm x 15mm | Arran
URBAN Composite Skirting Trim | 2.4m x 100mm x 15mm | Jura
URBAN Composite Skirting Trim | 2.4m x 100mm x 15mm | Mull
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Charcoal
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Dolphin
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Driftwood
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Mountain
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Natural
Habitat+ Composite Skirting Trim | 2.4m x 100mm x 15mm | Grizedale
Habitat+ Composite Skirting Trim | 2.4m x 100mm x 15mm | Rydal
Habitat+ Composite Skirting Trim | 2.4m x 100mm x 15mm | Bowness
Timber Deck Board | 3.6m x 150mm x 32mm | Green Treated
Timber Deck Board | 4.8m x 150mm x 32mm | Green Treated
Please select which sides you would like to edge:
URBAN Composite Edge Board | 3.6m x 136mm x 22mm | Arran
URBAN Composite Edge Board | 3.6m x 136mm x 22mm | Jura
URBAN Composite Edge Board | 3.6m x 136mm x 22mm | Mull
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Charcoal | Edge Board
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Dolphin | Edge Board
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Driftwood | Edge Board
IRO Timber Deck Board | 4.8m x 145mm x 28mm | Mountain | Edge Board
Habitat+ Composite Deck Board | 3.6m x 135mm x 22mm | Grizedale
Habitat+ Composite Deck Board | 3.6m x 135mm x 22mm | Rydal
Habitat+ Composite Deck Board | 3.6m x 135mm x 22mm | Bowness
Please select if you require joists:
Easi Edge | C16 Graded Timber | 3.6m x 45mm x 145mm
Easi Edge | C16 Graded Timber | 4.8m x 45mm x 145mm
Kiln Dried C24 Timber | 3.6m x 47mm x 150mm | Treated Timber
Kiln Dried C24 Timber | 4.8m x 47mm x 150mm | Treated Timber
Easi Edge | C16 Graded Timber | 3.6m x 45mm x 145mm
Easi Edge | C16 Graded Timber | 4.8m x 45mm x 145mm
Kiln Dried C24 Timber | 3.6m x 47mm x 150mm | Treated Timber
Kiln Dried C24 Timber | 4.8m x 47mm x 150mm | Treated Timber
Easi Edge | C16 Graded Timber | 3.6m x 45mm x 145mm
Easi Edge | C16 Graded Timber | 4.8m x 45mm x 145mm
Kiln Dried C24 Timber | 3.6m x 47mm x 150mm | Treated Timber
Kiln Dried C24 Timber | 4.8m x 47mm x 150mm | Treated Timber
Kiln Dried C24 Timber | 4.8m x 47mm x 150mm | Treated Timber
Kiln Dried C24 Timber | 3.6m x 47mm x 150mm | Treated Timber
Easi Edge | C16 Graded Timber | 3.6m x 45mm x 145mm
Easi Edge | C16 Graded Timber | 4.8m x 45mm x 145mm
In order to build your deck, you require the following extras. We have calculated how much of each product is required based on your deck size
Colour Matched Decking Screws | Arran | 25 Pack
£13.09 inc VAT
Colour Matched Decking Screws | Mull | 25 Pack
£13.09 inc VAT
Colour Matched Decking Screws | Jura | 25 Pack
£13.09 inc VAT
BSW Hidden Decking Clips | 100 Pack
£40.12 inc VAT
BSW Decking Starter Clips | 25 Pack
£28.65 inc VAT
C2 Decking Screws | 4.5mm x 65mm | 250 Pack | TIMco
£13.76 inc VAT
BSW Hidden Decking Clips | 100 Pack
£40.12 inc VAT
BSW Decking Starter Clips | 25 Pack
£28.65 inc VAT
Colour Matched Decking Screws | Arran | 25 Pack
£13.09 inc VAT
Colour Matched Decking Screws | Jura | 25 Pack
£13.09 inc VAT
Colour Matched Decking Screws | Mull | 25 Pack
£13.09 inc VAT
Selected shape and dimensions:
4m Structural Composite Joist
£ inc VAT
10
£
Total square meters:
m2
Linear meters:
Gap allowance:
The gap allowance is the distance side by side between each board. This is a
fixed value to allow for shrinkage between the seasons and is the gap you'll
have once clips are assembled.
mm
Wastage:
We recommend having 10% wastage to
allow for those awkward angles and to make sure you don't come up short
%
Total Cost:
£ inc VAT