{ "id": "adjustable-deck-pedestal-24-pack-30-60mm", "sku": "adjustable-deck-pedestal-24-pack-30-60mm", "title": "Adjustable Deck Pedestals 24 Pack (30-60mm)", "slug": "adjustable-deck-pedestal-24-pack-30-60mm", "price": 169.99, "currency": "AUD", "availability": "in_stock", "category": "deck-pedestals", "category_label": "Deck Pedestals", "tags": [], "colors": [], "materials": [], "dimensions": null, "weight": "2.6 kg", "images": [ "https://deckingpedestal.com.au/dropship-images/deck-pedestals/adjustable-deck-pedestal-24-pack-30-60mm/main-adjustable-deck-pedestal-24-pack-30-60mm.jpg", "https://deckingpedestal.com.au/dropship-images/deck-pedestals/adjustable-deck-pedestal-24-pack-30-60mm/adjustable-deck-pedestal-24-pack-30-60mm-2.jpg", "https://deckingpedestal.com.au/dropship-images/deck-pedestals/adjustable-deck-pedestal-24-pack-30-60mm/adjustable-deck-pedestal-24-pack-30-60mm-3.jpg", "https://deckingpedestal.com.au/dropship-images/deck-pedestals/adjustable-deck-pedestal-24-pack-30-60mm/adjustable-deck-pedestal-24-pack-30-60mm-4.jpg", "https://deckingpedestal.com.au/dropship-images/deck-pedestals/adjustable-deck-pedestal-24-pack-30-60mm/adjustable-deck-pedestal-24-pack-30-60mm-5.jpg", "https://deckingpedestal.com.au/dropship-images/deck-pedestals/adjustable-deck-pedestal-24-pack-30-60mm/adjustable-deck-pedestal-24-pack-30-60mm-6.jpg" ], "description_short": "A 24 pack of height-adjustable deck support blocks in high-strength PP, tuning from 30mm to 60mm, screw-fixing straight to your joists and lifting timber or WPC clear of wet ground.", "description": "The problem with building on real ground\n\nNothing outside is flat. A concrete slab is poured with a fall so water runs off. Pavers settle unevenly once the soil under them dries out and swells again. Compacted base shifts after a wet season. None of this matters until you try to lay a deck frame on it, and then it matters a lot.\n\nLay joists straight onto the surface and you get three headaches. The deck rocks where the ground dips. The timber sits in whatever water pools there, which is where rot and insect damage usually start. And a stubborn gap appears along one edge that you cannot hide with trim.\n\nBuilders have dealt with this forever by packing out the low spots with offcuts, shims or scraps of paver. It works for an afternoon. Then the timber packer swells, the paver scrap cracks, and the deck is uneven again.\n\nAdjustable deck pedestals fix the issue at the source. Every support point gets its own height setting, so the ground can be as wonky as it likes and the top of the frame still finishes dead flat.\n\nHow these supports work\n\nEach pedestal is a moulded plastic base with a threaded body. Twist it and the overall height changes. This pack adjusts anywhere between 30mm and 60mm, which is roughly 1.18 to 2.36 inches.\n\nThat is a low range on purpose. These are not for building a raised deck on posts. They are for the far more common job of lifting a frame slightly clear of a slab, a paved courtyard, a shed pad or a balcony surface. You get drainage and an air gap without losing head height or creating an awkward step up from a doorway.\n\nThe top plate is pre-drilled. You position the pedestal under the joist, set it to height, then drive screws up through those holes into the timber. From that moment the support and the frame behave as one structure, which is what stops the sway and tilt you get with loose packers.\n\nThe bodies are high-strength PP, better known as polypropylene. The maker specifies good corrosion and oxidation resistance and says the material does not easily deform, age or crack after long exposure to sun, rain and frost. In plain terms, it will not rust and stain the slab, it will not rot, and termites have no interest in it. The base is rounded underneath, which spreads the load across the surface rather than concentrating it at one point.\n\nOne thing worth saying plainly: the maker does not publish a load rating in kilograms for these. We will not invent one. The copy describes strong load bearing and a stable base, and that is as far as the facts go. For normal foot traffic on a low platform that is usually fine. For a spa, a stone bench, a full outdoor kitchen or anything unusual, talk to a builder or engineer and space your supports closer.\n\nWho these suit\n\nThis pack is a good fit if you are doing any of the following.\n\nLaying a floating deck over an existing concrete slab that has a fall on it. This is probably the single most common use. The 30mm of adjustment usually covers the drainage fall across a small to medium area.\n\nBuilding a shed or greenhouse floor that you want off damp ground. Grid the supports under the bearers and you get a dry, level floor with no concrete work.\n\nPutting a timber or WPC platform over pavers in a courtyard or on a balcony, where you need a clean flat surface but cannot or do not want to lift the existing material.\n\nRunning a walkway or a small multi-level landing across ground that is close to flat but not quite there.\n\nThey are less suitable if you need real height, if you are building over soft uncompacted soil with no pad under each point, or if the structure is subject to building approval with a specified footing system. In those cases use the right tool for the job.\n\nWorking out how many you need\n\nStart with your joist layout. Supports usually go under every joist at regular intervals, plus at every joist end and every join. Spacing between 400mm and 600mm along the joist is a common starting point for light residential use, closer if your boards are thin, your timber is springy, or you expect heavy loads.\n\nSketch the frame on paper and mark every support point. Count them. Then add a few spare. Running three pedestals short on a Sunday afternoon is a genuinely annoying way to end a project.\n\nTwenty-four supports covers a compact platform at tight spacing, or a slightly larger one at wider spacing. If your project is bigger than a few square metres, order two packs from the start.\n\nGetting them in straight\n\nSet up string lines first. Pick your finished height, run lines across the area at that level, and work to them. Trying to level pedestal by pedestal with a short spirit level is slow and tends to drift.\n\nSet the corner supports first and check them against each other with a long level or a laser. Then work along each line, bringing each pedestal up until it just touches the underside of the joist. Just touching is the goal. Over-tightening one support lifts the joist and takes the weight off its neighbours, which is exactly what causes rocking later.\n\nScrew through the top plate holes into the joist with outdoor-rated screws. Choose a length that bites well into the timber without punching through the walking surface.\n\nWalk the deck before you fix the boards. Any rocking is easier to chase out now than afterwards.\n\nCare, and the season-two check\n\nThere is not much maintenance to speak of. The material needs no paint, oil or sealer. What it does need is for water and air to keep moving.\n\nSweep or hose grit, soil and leaf litter away from the base areas every so often. Build-up blocks drainage and slowly turns an air gap into a damp bed, which defeats the whole point of lifting the frame.\n\nThen there is the season-two check, which is the part most people skip. Ground settles. Slabs move a little. After the first wet season, go around the perimeter with a level and see if anything has shifted. Because the height stays adjustable after installation, a quick twist brings the deck back to level without pulling boards up. That ability to re-level later is one of the real advantages over a fixed pier.\n\nKeep an eye on the screws too. Timber shrinks and swells with the weather, and a fixing that was tight in autumn can loosen by the following summer.\n\nThe short version\n\nIf you are building low and the ground is uneven, adjustable deck pedestals save you time, shims and swearing. This pack gives you 24 supports with a 30mm to 60mm range, moulded in weather-resistant polypropylene, screwing straight to your joists.\n\nThey suit floating decks over slabs, shed and greenhouse floors, courtyard and balcony platforms, and short walkways. They do not suit raised decks, soft unprepared soil, or heavy unusual loads without advice.\n\nMeasure your grid, count your points, order a few spare, and set up string lines before you start. Do that and you will have a flat, free-draining platform that stays flat.", "llm_summary": "This is a 24 pack of adjustable deck pedestals, supplied in black. Each support adjusts in height from 30mm to 60mm and is moulded from high-strength PP, described by the maker as resistant to corrosion, oxidation, deformation, ageing and cracking in sun, rain and frost. The top plate carries small holes so the pedestal screws directly to a joist, and the height can be re-adjusted after installation if the ground settles. The rounded base helps spread load. Typical uses include low floating decks, patios, multi-level decks, walkways, shed and greenhouse floors, WPC and treated timber joists, stone and engineered mesh flooring. Package measures 25 x 25 x 22.2 cm and weighs 2.6 kg. No load rating in kilograms is specified in this record.", "returnable": true, "return_policy": "Voluntary 14-day change-of-mind returns in original condition, buyer pays return postage; Australian Consumer Law consumer guarantees for faulty goods. Return postage on faulty goods is ours.", "shipping_profile": "standard", "warranty": null, "brand": "Decking Pedestal Company", "gtin": null, "mpn": null, "condition": "new", "url": "https://deckingpedestal.com.au/adjustable-deck-pedestal-24-pack-30-60mm/", "canonical_url": "https://deckingpedestal.com.au/adjustable-deck-pedestal-24-pack-30-60mm/", "json_url": "https://deckingpedestal.com.au/api/products/adjustable-deck-pedestal-24-pack-30-60mm.json", "updated_at": "2026-10-14" }