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Materials

Aluminium or WPC decking in Singapore weather

Both are sold as the thing that replaces timber. They replace different parts of it.

4 min readExterior Design, SingaporeUpdated 2026-10-30
Aluminium or WPC decking in Singapore weather

Compare the installation as well as the board

Both aluminium and WPC are part of our decking range. Start with the actual board system, the supporting work and the conditions of your space, then compare the appearance and written quotation.

On a small screen, scroll the table sideways to compare each option.

Compare the complete decking system
What to compareAluminium deckingWPC decking
Board materialAluminium board systemWood-plastic composite board system
AppearanceConfirm the available finish with a sampleConfirm the available grain and colour with a sample
ExposureCheck the specified system, finish and warranty against the siteCheck the specified boards and warranty against the site
Supporting workConfirm the frame, fixings, edges and drainageConfirm the frame, fixings, edges and drainage
CareFollow the cleaning and maintenance instructions for the supplied finishFollow the cleaning and maintenance instructions for the supplied boards
QuotationCompare the whole installed scope and written termsCompare the whole installed scope and written terms
ExploreAluminium decking in SingaporeWPC composite decking in Singapore

The problem both are solving

Timber, WPC and aluminium are different board systems, and the surface treatment matters as well as the core material. Compare the finish you want with the care instructions for the product being supplied.

For either aluminium or WPC, identify the supplied board, finish, permitted cleaners and any required or prohibited treatments. Include the supporting frame and drainage in the comparison.

What wood-plastic composite gives you

WPC combines wood fibre and polymer, with finishes that can resemble timber. Compare the actual board's grain and colour with a physical sample, then compare complete quotations for the same scope.

A curved layout, such as a garden terrace that follows a planter line, is planned through the selected board, its edge cuts, the trim and the supporting frame. Do not assume the boards themselves bend; ask how the proposed system handles your shape before comparing quotations.

For an exposed area, compare the selected board's surface and colour with the site's sun exposure and intended use.

What aluminium gives you

An aluminium board is a different material system from WPC. The ALU-R Pro catalogue describes hollow aluminium construction with a co-extruded TPE surface. Confirm the selected profile, surface, support spacing and fixing arrangement for the supplied boards.

For an exposed terrace, discuss how the specified board and finish suit the sun and rain at that site. Drainage remains part of the installation for either material. Compare the system requirements, cleaning guidance and written warranty rather than treating a material label as a lifespan guarantee.

How to choose for a condo balcony

For a balcony, begin with the existing floor, door threshold and drain access, then compare the actual WPC and aluminium samples. Include the supporting frame and finished height in the assessment. If zip blinds are also planned, show the full opening and floor together so the two installation scopes can be considered.

A board-only price is not the complete balcony decking cost. Compare the named boards, frame, fixings, edge work, installation and written warranty, and identify any additional work separately. Our balcony decking cost and scope guide has a sheet for comparing two quotations line by line. Send photos and approximate dimensions for a quotation for your own balcony.

Ask how exposed the deck is and how you intend to use it. For a covered balcony or an exposed terrace, assess the actual boards, supporting frame, drainage and warranty conditions for that setting before choosing.

Ask whether the shape is straight or curved. A curve needs the selected board, edge cuts, trim and supporting frame planned together, whichever material you choose.

Ask what will be underfoot in direct sun. Compare the actual surface sample and relevant product data for the chosen colour and exposure, including any temperature or traction information available for that product.

And ask to stand on both. We keep samples at the Ubi showroom. The difference underfoot is obvious in ten seconds and describes itself better than any specification sheet.

One honest caveat on photographs

Aluminium decking is commonly sold with a wood-grain finish, which means a photograph of a finished deck often cannot tell you which material it is. Do not choose from a gallery, ours included.

The board material on your job is named in your written quotation. If a quotation does not name it, that is the thing to ask about.

Systems this applies to
Aluminium Decking→ WPC Decking→
Questions

Questions we get on this one.

If yours is not here, send it on WhatsApp. We answer with what we know and say so when we do not.

Which lasts longer, aluminium or WPC decking?
A material name alone does not establish the lifespan of an installation. Compare the actual board and finish, exposure, supporting frame, drainage, maintenance instructions and written warranty. We can discuss both options for your space rather than promise a fixed lifespan from a photograph.
Do either of them need sealing or staining?
For the supplied aluminium or WPC board, follow the product-specific care instructions. Confirm the permitted cleaners and whether any coating, sealant, staining or other treatment is required or prohibited, including any warranty conditions.
Can I see and stand on samples before deciding?
Yes. We keep samples at the showroom at 6 Ubi Road 1, and the difference underfoot decides most people faster than a specification sheet does.
Can decking be included in a roofing and blinds quotation?
Yes. Include the flooring, overhead cover and side openings in the same brief. We can assess the selected systems together and confirm the materials and installation scope in writing.
Should I choose WPC or aluminium decking for my balcony?
Compare the actual board samples, desired appearance, sun and rain exposure, cleaning requirements and complete installed quotation. WPC offers a timber-look composite surface; aluminium is a different board material with its own finish and supporting requirements. Neither choice removes the need to check the frame, drainage, door thresholds and finished height. Exterior Design supplies both and can help compare the specified systems for your balcony.

One photo is all it takes.

Tell us your property type and rough dimensions and we will tell you which system actually suits the space, and what it should cost.