Materials
Material selection depends on location, coastal exposure, UV, rain, moisture, traffic, structure, appearance, maintenance, budget, availability and the type of project. Depending on availability and the requirements of the project, outdoor timberwork can use a range of timber species. We can help you compare the options appropriate for your project.
Overview
This hub covers timber, composite and related outdoor-material options commonly discussed for South African decks, pergolas, screens and structures. Deckspertz does not present every species as current stock. Named Garapa, Balau and H3-treated pine pages remain the records of timber used on completed projects.
At a glance
Our approach
The wearing surface and the supporting structure are separate decisions. Boards, screens, posts and fixings are specified from the brief, the exposure and what is available for that job.
A coastal pool surround, a sheltered garden deck and a hospitality terrace do not share one material list. Photographs, suburb and how the space will be used matter more than a favourite board name.
Garapa, Balau and H3-treated pine are documented where they already appear on published projects. This hub does not repeat those project stories in full.
Timber
Depending on availability and the requirements of the project, outdoor timberwork can use a range of timber species. The notes below are options to discuss — not a Deckspertz stock list.
A dense hardwood used on named Deckspertz screens, balustrades and stairs. Other Balau uses would be specified from a new site.
Named in completed work
Read moreRecorded on this website as civic seating at Kruskal Avenue, Bellville — not a Garapa decking catalogue.
Named in completed work
Read moreA dense South American hardwood sometimes considered for outdoor wearing surfaces where availability and the brief allow.
Option depending on availability
A very dense hardwood sometimes specified for high-wear outdoor floors. Suitability, supply and machining need a project conversation.
Option depending on availability
An African hardwood sometimes used for outdoor joinery and structures where the brief and supply suit it.
Option depending on availability
An Australian hardwood occasionally considered for outdoor work. Availability in South Africa varies.
Option depending on availability
A distinctive hardwood sometimes discussed for feature outdoor work. Colour, supply and working properties need to be checked for the job.
Option depending on availability
H3-treated pine appears on completed Deckspertz decks and stairs. Treatment grade and use class follow the job, not a single default.
Named in completed work
Read moreAlso considered
Further species and modified timbers may be appropriate depending on availability, appearance and the structure. We can help you compare the options appropriate for your project.
A eucalyptus hardwood sometimes used for outdoor work in South Africa when the brief and supply suit it.
Option depending on availability
An Australian eucalypt occasionally considered for outdoor timberwork. Supply is not assumed.
Option depending on availability
A dense West African hardwood sometimes discussed for exterior wearing surfaces.
Option depending on availability
A softer durable softwood sometimes considered for cladding or decks where the exposure and maintenance plan suit it.
Option depending on availability
Heat-treated boards can be considered for appearance and stability. Performance still depends on detailing, finish and exposure.
Option depending on availability
Other species or board systems can be discussed when they fit the site, the structure and what can actually be supplied.
Specified from the brief
Composite
Composite boards are a manufactured wearing surface. They still need a correctly built substructure, falls, gaps and edge details. Colour, texture and thermal movement vary by system. Composite is not described here as maintenance-free.
Board colour and texture are a product choice. UV and weathering still change how a surface looks over time.
Service page
Read moreComposite boards expand and contract. Fixing method, ventilation and the supporting frame have to match the board system.
Service page
Read moreCleaning and looking after edges still matter. Do not assume a composite deck never needs attention.
Comparison guide
Read moreStructures
Posts, beams and infill can be considered in treated timber, hardwood, or mixed with composite elements. Aluminium and steel or other metal systems are material options that some outdoor structures use. Deckspertz specifies timber structures from the site; metal systems are not claimed here as a published install line.
Common for posts and beams where a structural pine grade suits the exposure and the connections.
Related service
Read moreDense hardwoods may be used for posts, beams or infill where appearance and durability are part of the brief.
Related service
Read moreSome structures combine a timber or metal frame with composite infill. That mix is specified per job.
Related service
Read moreAluminium or steel frames appear on some outdoor structures. They are listed here as material options, not as a Deckspertz metal-install offer.
Material option
Screens
Material changes privacy, airflow, light, appearance, maintenance and how the screen copes with coastal air. Mixes of timber and metal are sometimes considered.
Vertical or slatted hardwood screening is recorded on completed work, including Balau in Rondebosch.
Related service
Read morePine screens can be appropriate where the brief, coating and exposure allow.
Related service
Read moreManufactured screen boards exist as an option. Detailing still follows the system and the structure behind it.
Related service
Read moreAluminium screening or timber with metal is a material conversation, not a claim that every combination is a Deckspertz product line.
Related service
Read moreEdges
Edges can be timber, timber with cable, timber with metal, or glass and metal where the building and regulations make that appropriate. Specific patented systems are not claimed unless they appear in a project record.
A timber rail and infill specified with the deck or stair.
Related service
Read moreCompleted work includes a Balau balustrade with stainless-steel cable in Bloubergstrand.
Named in completed work
Read moreMixed edges are considered from the building, the view and what the site requires. Not every combination is a stock system.
Related service
Read moreBelow the boards
The visible deck surface and the supporting structure are separate material decisions. Ground conditions, drainage, ventilation, moisture, spans, load and fixings all affect the frame. These notes are not engineering calculations or load ratings.
Often used for beams and joists where a suitable treated grade matches the exposure. Named on the Franschhoek Guest Suite record.
Named in completed work
Read moreHardwood framing can be considered where the brief and connections need it. It is not assumed for every deck.
Specified from the brief
Steel, concrete or other supporting work can sit under timber. Those elements are designed with the site; this page does not publish span tables.
Site-specific
Detailing
Exterior screws, stainless fixings in aggressive exposure, pre-drilling dense hardwoods, and exterior oils or sealants are part of the specification. Product names and recoat intervals are not invented here.
Coastal air and treated timber both affect fastener choice. Stainless is often discussed near the sea; the grade follows the exposure.
Coastal notes
Read moreHidden clips, face-screwing and pre-drilling dense hardwoods are method choices for the board and the frame.
Specified from the brief
Exterior oils and sealants change colour and water behaviour. Uncoated timber weathers. Recoating depends on UV, traffic and the finish that was used.
Maintenance guide
Read moreExposure
Salt air, wind, UV, rain, moisture, drainage, corrosion and timber movement all tighten the specification. Coastal work still needs a site conversation — these notes do not replace it.
Coatings, board stability and metal corrosion are all affected. Hermanus, Bloubergstrand and Melkbosstrand projects sit in that kind of air.
Coastal guide
Read moreFalls, gaps and ventilation under the wearing surface matter as much as the species name.
Coastal guide
Read moreRecoating and washing intervals are usually shorter in harsh exposure. There is no maintenance-free coastal deck on this website.
Maintenance guide
Read moreSpecification
A practical sequence for getting from an unused space to a specified wearing surface and structure.
Levels, access, existing buildings, pool edges and how people already move through the ground.
Sun, wind, rain, salt air, shading and how wet the structure will stay.
Entertaining, family use, furniture, traffic and whether the surface is a floor, a screen or a structure.
Timber species, composite boards and mixed options that can actually be supplied for the job.
Oiling, cleaning, weathering and how much attention the owner wants to give the surface.
Layout, falls, edges, shade and privacy — still as construction, not a separate architectural appointment.
Wearing surface, substructure, fixings and finish written for that site.
Set out, frame, board and finish the work as specified.
In this section
Related pages
Start a project
Share the suburb, photographs if you have them, and how you want to use the space. Materials are specified from that conversation.
Phone 021 001 2097, WhatsApp +27 63 970 7843, email [email protected].
