{"title":"Outdoor Umbrella Bases \u0026 Weights","description":"Explore weighted bases and ballast options for selected cantilever and centre-pole umbrellas. Check the umbrella type, pole diameter or cross-base dimensions before ordering.","products":[{"product_id":"holdfast-kit-cantilever-umbrella-base-weight-100kg","title":"Cantilever Umbrella Base Weight 100kg – 4 Sand-Fill Plates | Holdfast Kit","description":"\u003cp\u003eFour fillable polypropylene plates designed to add distributed ballast around a compatible cantilever umbrella cross base. Wind and changing weather conditions can move or overturn an inadequately installed umbrella, so the umbrella must be assembled and weighted in accordance with its instructions.\u003cspan class=\"PDq2pG_selectionAnchor\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Holdfast Kit adds ballast but does not make an umbrella windproof.\u003c\/p\u003e\n\u003cp\u003eEach plate measures 49x49cm with an 11cm profile. Filled with dry sand, each plate reaches approximately 25kg — four plates positioned around the cross base provide up to approximately 100 kg of distributed ballast when fully filled with dry sand. The plates interlock directly onto the horizontal bars of a standard 100x100cm cross base without any tools: position each plate, fill through the top opening, close the caps. At just 11cm assembled height, the kit sits flat beneath your umbrella, all but invisible at ground level once the canopy is open above it.\u003c\/p\u003e\n\u003cp\u003eWhen all four plates are correctly positioned and fully filled with dry sand, the kit provides up to approximately 100 kg of added ballast distributed around the cross base.\u003c\/p\u003e\n\u003ch2\u003eA modular 100kg ballast system built for cantilever umbrella cross bases\u003c\/h2\u003e\n\u003cp\u003eThe Holdfast Kit is designed for compatible cantilever umbrellas using a 100 x 100 cm cross base. All four plates are identical and are positioned around the cross base to distribute the added weight.\u003cspan class=\"PDq2pG_selectionAnchor\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe polypropylene construction is intended for outdoor use. Its appearance and condition may gradually change depending on sunlight, weather exposure, filling material, use and maintenance.\u003c\/p\u003e\n\u003cp\u003eFill the plates with dry sand in accordance with the supplied instructions. Allow approximately 17 litres or 25 kg of dry sand per plate, and approximately 68 to 70 litres in total, to reach a combined filled weight of up to approximately 100 kg.\u003cspan class=\"PDq2pG_selectionAnchor\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eDo not fill this model with water unless the supplied instructions expressly permit it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAssembled: 100 x 100 x 11 cm\u003c\/strong\u003e\u003cbr\u003e100kg total ballast (filled) | 9.45kg empty weight | 70L sand capacity\u003c\/p\u003e\n\u003cp\u003eThe Holdfast Kit is designed for cantilever umbrellas with a compatible 100 x 100 cm cross base. Compare the cross-base dimensions, crossbar layout and available clearance before ordering.\n\u003c\/p\u003e\u003cp\u003eCompatibility does not establish a wind rating or guarantee suitability for every umbrella, surface or location. The umbrella and cross base are not included.\u003c\/p\u003e\n\u003ch2\u003eDisappears in use, stores flat off-season\u003c\/h2\u003e\n\u003cp\u003eAt 11cm assembled height with an anthracite matte finish, the Holdfast Kit sits below the sightline of any outdoor setting and recedes against most paving surfaces — concrete, bluestone, timber decking, terracotta tile. It does its job without drawing attention to itself, which is exactly what a good ballast system should do.\u003c\/p\u003e\n\u003cp\u003eWhen the season ends, the process reverses in minutes: remove the sand, unclip the four plates from the cross base and stack them flat. Four plates nest into a footprint of roughly 50x50x11cm — compact enough for a garage shelf, a garden shed corner or under a bench. Come spring, reassemble and refill. No seasonal storage headaches, no bulky equipment to find space for.\u003c\/p\u003e\n\u003cp\u003eThe kit provides up to approximately 100 kg of added ballast when fully filled with dry sand. The amount and type of ballast required depend on the umbrella instructions, canopy dimensions, installation method, supporting surface and exposure.\u003cspan class=\"PDq2pG_selectionAnchor\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAdditional anchoring may be required in some locations. Close the umbrella during strong or gusty winds and whenever it is left unattended.\u003c\/p\u003e\n\u003ch2\u003eAt a glance\u003c\/h2\u003e\n\u003cp\u003eFour interlocking polypropylene plates, 49x49x11cm each. Assembled dimensions 100x100x11cm. Empty weight 9.45kg, filled weight 100kg, sand capacity 70 litres. Anthracite matte finish, Polypropylene construction intended for outdoor use. Compatible with 100x100cm cross-base cantilever umbrellas. Tool-free assembly. Sand, cross base and umbrella not included.\u003c\/p\u003e","brand":"Shadelys","offers":[{"title":"Anthracite","offer_id":62780398698826,"sku":"847444","price":249.0,"currency_code":"AUD","in_stock":true},{"title":"Brown","offer_id":62780398731594,"sku":"847445","price":249.0,"currency_code":"AUD","in_stock":true},{"title":"White","offer_id":62780398764362,"sku":"847446","price":249.0,"currency_code":"AUD","in_stock":true},{"title":"Light grey","offer_id":62780398797130,"sku":"847447","price":249.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1061\/3522\/4650\/files\/4HoldfastKit_100kgSand-FillBaseWeightforCantileverUmbrellas.webp?v=1784652217"},{"product_id":"steadfast-base-concrete-umbrella-stand-25kg","title":"Umbrella Base Stand 25kg Concrete – 32\/35\/38mm Poles Adaptors | Steadfast Base","description":"\u003cp\u003eTwenty-five kilograms of concrete, enclosed in a durable plastic shell, with an iron tube and a tightening knob that locks your umbrella pole firmly in place. The Steadfast Base is a different proposition from a sand-fill ballast system: it arrives ready-weighted, requires no filling, no sand run to the hardware store, and no seasonal emptying. Set it down, insert your umbrella pole, tighten the knob. That's the entire process.\u003c\/p\u003e\n\u003cp\u003eThe round base measures 49.5cm in diameter and 32cm in height — a compact footprint that sits cleanly beneath a garden table without dominating the space around it. The iron tube accepts three pole sizes via the included adaptors: 32mm, 35mm and 38mm. The single tightening knob secures the pole firmly once positioned, helping to limit sideways movement without requiring additional tools\u003cspan class=\"PDq2pG_selectionAnchor\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAt 25kg of pre-set concrete ballast, the Steadfast Base provides a weighted foundation for compatible garden and market umbrellas with 32 mm, 35 mm or 38 mm poles. Black finish, minimal profile, nothing to fill before use.\u003c\/p\u003e\n\u003ch2\u003eA pre-weighted concrete umbrella stand with multi-size pole compatibility\u003c\/h2\u003e\n\u003cp\u003eThe Steadfast Base is designed for straight-pole umbrellas with a mast diameter of 32 mm, 35 mm or 38 mm. Three pole adaptors are included. Pole-diameter compatibility does not by itself confirm that the base is sufficiently weighted for a particular umbrella. Check the umbrella's minimum base-weight or anchoring requirements before use.\u003c\/p\u003e\n\u003cp\u003eThe tightening knob on the iron tube allows you to adjust and lock the pole position precisely, helping to hold a compatible umbrella pole securely in position. This is particularly useful when repositioning the umbrella through the day to track the sun.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBase: Ø 49.5 cm × 32 cm H\u003c\/strong\u003e\u003cbr\u003eWeight: 25kg | Compatible pole diameters: 32 \/ 35 \/ 38mm\u003c\/p\u003e\n\u003cp\u003eThe Steadfast Base accepts straight-pole umbrellas with a mast diameter of 32 mm, 35 mm or 38 mm. It is not suitable for cantilever umbrellas or poles above 38 mm in diameter. Check the umbrella's minimum base-weight requirement before installation. For cantilever umbrella ballast, see the Holdfast Kit.\u003c\/p\u003e\n\u003ch2\u003eReady to use, no preparation required\u003c\/h2\u003e\n\u003cp\u003eThe key practical difference between the Steadfast Base and a sand-fill ballast system is convenience: the concrete is already in there. There is no trip to the hardware store for sand bags, no filling sequence to follow, no waiting. For outdoor spaces where simplicity matters - a courtyard, garden patio or alfresco area — a pre-weighted base that is ready to use straight out of the box has a clear advantage.\u003c\/p\u003e\n\u003cp\u003eThe trade-off is portability: at 25kg, the Steadfast Base is manageable for repositioning but is not designed to be packed down or stored flat like a modular plate system. It is a permanent fixture of your outdoor setup, which for most garden and alfresco applications is exactly what you want.\u003c\/p\u003e\n\u003ch2\u003eAt a glance\u003c\/h2\u003e\n\u003cp\u003eRound base 49.5cm diameter, 32cm height. Pre-weighted at 25kg, concrete-filled plastic shell, iron tube. Fits pole diameters of 32mm, 35mm and 38mm — three adaptors included. Single tightening knob. Black finish. Assembly required. Not compatible with poles above 38mm or cantilever umbrella cross bases. For cantilever umbrella ballast, see the \u003ca href=\"\/products\/holdfast-kit-cantilever-umbrella-base-weight-100kg\"\u003eHoldfast Kit\u003c\/a\u003e.\u003c\/p\u003e","brand":"Shadelys","offers":[{"title":"Default Title","offer_id":62780843852106,"sku":"368670","price":189.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1061\/3522\/4650\/files\/1UmbrellaBaseStand25kgConcrete_32_35_38mmPoleAdaptor_SteadfastBase.webp?v=1784656510"},{"product_id":"bedrock-base-granite-umbrella-stand-30kg","title":"Granite Umbrella Base 30kg – Mobile 4-Castor Stand, Fits 38 \u0026 48mm Poles | Bedrock Base","description":"\u003cp\u003eThirty kilograms of solid granite, four castors and a stainless steel tube holder with two locking bolts. The Bedrock Base accepts compatible straight umbrella poles measuring 38 mm or 48 mm in diameter. Pole-diameter compatibility does not by itself confirm that the base is sufficiently weighted for a particular umbrella.\u003c\/p\u003e\n\u003cp\u003eThe granite plate is fitted with four castors for repositioning on a smooth, level surface. Close the umbrella before moving the base. Move the setup using the base rather than the umbrella pole, then lock the castors and tighten the two tube bolts before reopening the canopy.\n\u003c\/p\u003e\u003cp\u003eAt 45cm in diameter and 30kg, the Bedrock Base provides a stable, low-profile foundation that holds its ground without taking over the visual space around it. The black finish and natural granite surface read as materials rather than equipment — exactly what a premium outdoor setting calls for.\u003c\/p\u003e\n\u003ch2\u003eA 30kg natural granite umbrella stand for garden and market umbrellas\u003c\/h2\u003e\n\u003cp\u003eThe Bedrock Base accepts the 38 mm pole diameter used by the Mas 3 m and the 48 mm pole diameter used by the Domaine 3.5 m. Pole-diameter compatibility does not by itself confirm that the base is sufficiently weighted for either umbrella. Check the umbrella's minimum base-weight or anchoring requirements before use.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Bedrock Base is not suitable for cantilever umbrellas or poles above 48 mm in diameter. For cantilever umbrella ballast, see the Holdfast Kit.\u003c\/p\u003e\n\u003cp\u003eThe stainless steel tube is intended for outdoor use. The granite plate requires no filling before use, but the base should still be cleaned and inspected periodically. Check the castors, tube and locking bolts for wear, corrosion or loosening.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBase: Ø 45 cm\u003c\/strong\u003e\u003cbr\u003eWeight: 30kg | Compatible pole diameters: 38mm and 48mm | 4 castors included\u003c\/p\u003e\n\u003cp\u003eThe Bedrock Base is compatible with the \u003ca href=\"\/products\/mas-sand-market-umbrella-3m\"\u003eMas 3m market umbrella\u003c\/a\u003e (38mm pole, via adaptor) and the \u003ca href=\"\/products\/domaine-off-white-market-umbrella-3-5m\"\u003eDomaine 3.5m market umbrella\u003c\/a\u003e (48mm pole, native fit). It is not suitable for cantilever umbrellas or poles above 48mm in diameter. For cantilever umbrella ballast, see the \u003ca href=\"\/products\/holdfast-kit-cantilever-umbrella-base-weight-100kg\"\u003eHoldfast Kit\u003c\/a\u003e. For a lighter concrete option, see the \u003ca href=\"\/products\/steadfast-base-concrete-umbrella-stand-25kg\"\u003eSteadfast Base\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eThe practical case for granite over concrete\u003c\/h2\u003e\n\u003cp\u003eThe choice between a concrete-filled base and a solid granite base comes down to three things: material quality, portability and longevity. Granite is denser than concrete at the same volume, which is why a 45cm granite plate can reach 30kg without the larger footprint of a concrete fill system. The solid granite plate requires no filling before use. Clean the granite and metal components periodically and inspect the castors, tube and locking bolts for wear or loosening. In the Australian outdoor context, where bases are left out through summer heat and winter rain alike, natural stone simply outlasts engineered fill.\u003c\/p\u003e\n\u003cp\u003eThe four castors are the other practical advantage. A 30kg base that cannot move is manageable; a 30kg base on castors is effortless. On a smooth paved surface — concrete, stone, composite decking — rolling the entire umbrella setup into a new position takes seconds. For outdoor spaces where the sun angle changes significantly through the day, or where the umbrella needs to be stored under cover overnight, the castor system removes the daily friction of managing a heavy base.\u003c\/p\u003e\n\u003ch2\u003eAt a glance\u003c\/h2\u003e\n\u003cp\u003eSolid granite weight plate, 45cm base diameter, 30kg. Stainless steel tube holder, 57mm external \/ 48mm internal diameter, 29.5cm tube height. Two locking bolts. One adaptor included, fits 38mm and 48mm poles. Four castors for easy repositioning. Black finish. Not compatible with poles above 48mm or cantilever umbrella cross bases. For cantilever ballast, see the \u003ca href=\"\/products\/holdfast-kit-cantilever-umbrella-base-weight-100kg\"\u003eHoldfast Kit\u003c\/a\u003e.\u003c\/p\u003e","brand":"Shadelys","offers":[{"title":"Default Title","offer_id":62781594632522,"sku":"48564","price":289.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1061\/3522\/4650\/files\/1GraniteUmbrellaBase30kg_Mobile4-CastorStand_Fits38_48mmPoles_BedrockBase.webp?v=1784658442"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1061\/3522\/4650\/collections\/4HoldfastKit_100kgSand-FillBaseWeightforCantileverUmbrellas.webp?v=1784902809","url":"https:\/\/shadelys.com\/collections\/outdoor-umbrella-bases-weights.oembed","provider":"Shadelys","version":"1.0","type":"link"}