Configure your deck step by step and get an indicative materials estimate instantly.
1
Dimensions
2
Support
3
Framing
4
Decking
5
Finishing
6
Results
What size is your deck?
Enter the overall length and width of your deck in metres. We'll calculate everything from there.
metres
×
metres
0 m²
Tip: Measure from the outside edge of your framing, not your floor space. If your deck is L-shaped, measure the largest rectangle for now — you can adjust quantities with Darrel when you request a quote.
How will your deck be supported?
The support system determines your deck height and whether Nurajack pedestals are included in your estimate.
⬛
Nurajack pedestals
Height-adjustable aluminium pedestals sitting on concrete, waterproof membrane, or compacted ground. No in-ground posts required. Fast and clean.
Pedestal qty calculated
🪵
Timber posts
Traditional H4 treated timber posts concreted into the ground. Suitable for elevated decks and sloped sites. Post supply and installation by your builder.
Installation quote required
Nurajack pedestals are available directly from ShadowDeck. Height range: 28mm–550mm. Self-levelling head protects membranes. Pricing on request — we'll include the estimated qty in your results.
Timber posts are supplied and installed by your builder. ShadowDeck supplies the framing and decking system. We'll include an installation quote request in your results.
What type of framing?
The framing sits between your support system and the decking boards. Choose aluminium for longevity and PS1 certification, or timber if your builder is supplying the frame.
Timber framing
H3/H4 treated pine joists and bearers. Supplied and installed by your builder. Most common for posts-in-ground builds.
Builder supply
EconoSpan aluminium
30mm or 60mm aluminium profile. Lightweight, durable, no rot. Competitive pricing. No PS1 engineering certificate.
From $80/lm
SuperSpan aluminium
30mm, 60mm or 120mm profile. PS1 certified by EQ Struc. Required for building consent applications and elevated decks.
PS1 certified
Joist only
Joists run directly between supports. Lower profile, more Nurajack pedestals. Ideal for low-clearance builds over concrete or membrane.
Lower profile
Bearer + joist
Bearers span between supports, joists sit on top. More height but significantly fewer Nurajack pedestals. Better for uneven or sloped ground.
Fewer pedestals
Choose your decking profile
All profiles are premium Kwila hardwood, pre-grooved for the ShadowDeck™ hidden fastener system. Priced at $16.80/lm.
140×21mm Domed
Our most popular profile. Domed top sheds water naturally. Grooved both sides for fast nail-free fixing. Best overall performance.
Most popular
140×21mm Flat
Traditional flat finish. Same hidden fastener system. 140mm wide boards give a clean, classic look. Best-in-class flat deck finish.
$16.80/lm
Coverage: 7.7 lineal metres covers 1m² of deck (includes 10% wastage allowance). One trade pack covers every 12m².
Finishing options
Add picture framing, stairs, and extras to complete your estimate.
None
Square cut ends. Board ends visible on the sides of the deck.
Square end cap
2 sides capped with a border board so board ends are not visible. T-shaped fasteners used. Common on house-attached decks.
3-side picture frame
Picture frame on 3 sides. House wall forms the 4th side. Includes border board + fascia riser.
Full 4-side frame
Complete picture frame on all 4 sides. Border board + fascia riser on full perimeter. Premium finish.
Creates a clean 12mm gap between the house and your first decking board. 1 pack includes 20 spacers (spaced between joists on the ribbon plate).
Number of steps
2
Stair width: 1200mm. Each step = 1× tread board + 1× back board + 1× fascia riser.
Commercial grade German nano technology. 3–5 year UV protection depending on sun exposure.
Your indicative estimate
Indicative materials pricing excl. GST. All prices NZD RRP — subject to confirmation.
This is an indicative estimate for materials only. Pricing excludes installation, delivery, site preparation, and consenting costs. All prices are NZD RRP excl. GST. Nurajack pedestal pricing is available on request. Contact ShadowDeck on 0800 742 369 or info@shadowdeck.co.nz to confirm your quote.
Request a formal quote
✓ Quote request sent! Darrel will be in touch within 1–2 business days.