{"id":19476,"date":"2026-08-07T14:44:06","date_gmt":"2026-08-07T13:44:06","guid":{"rendered":"https:\/\/www.fhbrundle.co.uk\/lp\/?page_id=19476"},"modified":"2026-08-19T15:44:25","modified_gmt":"2026-08-19T14:44:25","slug":"decking-pedestals","status":"publish","type":"page","link":"https:\/\/www.fhbrundle.co.uk\/lp\/product-range-overviews\/decking-pedestals\/","title":{"rendered":"Decking Pedestals [F.H.Brundle]"},"content":{"rendered":"

\"adjustable<\/span><\/div><\/div><\/div><\/div><\/div>

Why Choose Adjustable Decking Pedestals
& Subframe Cradles?<\/h1>\n<\/div><\/div><\/div><\/div><\/div>

Adjustable Pedestals & Cradles: Built for Speed, Engineered for Precision<\/h2>\n<\/div>

Whether you\u2019re transforming a backyard patio, building an elevated commercial roof terrace, or installing a low-profile balcony subframe, F.H.Brundle\u2019s <\/b> adjustable decking pedestals<\/i><\/a><\/u> provide the ultimate foundation.<\/p>\n

Covering heights from 10mm to 975mm<\/b>, our pedestal systems\u2014often referred to as decking risers or support feet\u2014dramatically reduce installation time, eliminate uneven slopes, and extend the life of your decking subframe<\/a><\/strong>.<\/p>\n

Equally at home in industrial and commercial settings as they are in residential – this range of deck supports feature tremendous load-bearing properties.<\/p>\n<\/div>

View the range of Risers & Cradles<\/span><\/a><\/div><\/div><\/div>
\"adjustable<\/span><\/div><\/div><\/div><\/div><\/div>

Advantages to using adjustable pedestals \/ risers <\/b><\/span><\/h2>\n

\u2022 <\/b>No Messy Excavation:<\/b> Avoid digging up existing concrete or old patios\u2014install directly over existing hard surfaces.<\/p>\n

\u2022 Protects Your Investment:<\/b> Elevating your joists off the damp ground allows air circulation and water runoff, preventing timber rot and membrane damage.<\/p>\n

\u2022 Flawless Finish:<\/b> Achieve a flat, seamless step-out transition from your back door to your garden or balcony deck.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

What are Adjustable Pedestals (Risers)<\/span><\/h2>\n<\/div><\/div><\/div><\/div><\/div>

Adjustable pedestals<\/a> (or risers)<\/b> are heavy-duty, height-adjustable support feet engineered to raise, level, and support decking subframes, paving slabs, flooring, or porcelain tiles over solid bases.<\/p>\n

Instead of embedding timber posts in concrete or laying joists directly on damp ground, these units sit on top of the substrate (such as concrete pads, balconies, or roof membranes) and use a screw-jack thread system to allow precise height adjustments.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

Which Pedestals are the best choice<\/span><\/h2>\n<\/div>

Brundle Pedestals vs. RynoDeck Pedestals<\/h4>\n<\/div><\/div><\/div><\/div><\/div>
\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Feature \/ Property<\/th>\nBrundle Pedestals<\/th>\nRynoDeck Pedestals<\/th>\n<\/tr>\n<\/thead>\n
Material Construction<\/strong><\/td>\nUV-stabilized, 100% recyclable high-density polypropylene (PP)<\/td>\nHigh-density polypropylene (PP) \/ Heavy-duty polymer<\/td>\n<\/tr>\n
Height Range<\/strong><\/td>\n10mm to 975mm (10\u201340mm cradles, 23\u2013405mm standard risers, up to 975mm with 220mm extenders)<\/td>\n10mm to 1000mm+ (10\u201340mm cradles, 22\u2013960mm+ adjustable risers & extenders)<\/td>\n<\/tr>\n
Slope Correction<\/strong><\/td>\nIntegrated self-levelling head for slopes \u00b15\u00b0 (with optional lock for fixed angle)<\/td>\nSelf-levelling heads available for slopes up to 5% (1:20 gradient) or fixed-head with slope adjusters<\/td>\n<\/tr>\n
Fire Class Rating<\/strong><\/td>\nStandard polymer rating; suitable for balconies\/terraces under 11m<\/td>\nStandard PP range (Class E\/F); Euroclass A1 non-combustible steel ranges available<\/td>\n<\/tr>\n
Noise & Cushioning<\/strong><\/td>\n2mm anti-noise \/ anti-slip rubber head & optional acoustic base pad<\/td>\nAnti-vibration rubber shims & acoustic isolation pads<\/td>\n<\/tr>\n
Surface Compatibility<\/strong><\/td>\nTimber joists, Aluminium subframes, Composite joists, Porcelain tiles<\/td>\nTimber joists, Composite joists, Aluminium frames, Paving slabs<\/td>\n<\/tr>\n
Key Features<\/strong><\/td>\nTop-adjustment key tool (fine-tune without lifting tiles), anti-unscrewing safety blocks, cut-to-edge base guides<\/td>\nHigh compression resistance, wide footplate load distribution, wrap-around joist cradles<\/td>\n<\/tr>\n
Ideal Application<\/strong><\/td>\nGeneral residential & commercial decking, patio overlays, low-to-mid rise balconies<\/td>\nHeavy-duty landscape projects, commercial paving, raised roof deck subframes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div><\/div><\/div><\/div>
<\/div><\/div>
\n
“F.H. Brundle\u2019s adjustable pedestals deliver a rock-solid, perfectly level subframe over slopes without messy digging or concrete. <\/strong><\/em>By elevating joists and tiles off wet ground, these heavy-duty supports create vital airflow that permanently prevents rot and structural decay. <\/strong><\/em>Backed by trusted trade reliability, it\u2019s the faster, smarter foundation for a whisper-quiet deck or terrace built to last for decades.”<\/strong><\/em><\/div>\n<\/div>\n<\/div><\/div><\/div>
<\/div><\/div><\/div><\/div>

The Benefits of Adjustable Pedestals<\/h2>\n<\/div><\/div><\/div><\/div><\/div>

\u2022 Rapid Levelling:<\/b> Screw-jack thread mechanisms allow millimetre-exact height adjustments, drastically speeding up subframe installation compared to manual shimming or packing.<\/p>\n

\u2022 Automatic Slope Correction:<\/b> Self-levelling heads automatically compensate for ground falls and uneven gradients up to \u00b15\u00b0, keeping the finished surface flat without extra labour.<\/p>\n

\u2022 Rot & Moisture Prevention:<\/b> Elevating timber and composite joists above the ground allows continuous airflow and rapid drainage, stopping joists from sitting in standing water and decaying.<\/p>\n

\u2022 Protects Substrates & Membranes:<\/b> Wide, smooth base plates distribute weight evenly across ground surfaces, avoiding punctures to roof felt, EPDM, fiberglass, or asphalt membranes on balconies and roof terraces.<\/p>\n

\u2022 No Excavation Required:<\/b> Units sit directly on top of existing concrete, paved patios, or solid bases, eliminating the need for digging holes, mixing concrete, or hauling away soil.<\/p>\n

\u2022 Integrated Drainage & Utility Access:<\/b> Keeps pipework, cables, and drainage channels hidden beneath the deck while leaving them accessible for future maintenance.<\/p>\n

\u2022 High Load Capacity:<\/b> Made from durable, UV-stabilized polypropylene capable of supporting heavy weight loads (up to 1,500kg per unit) in temperature extremes.<\/p>\n

\u2022 Acoustic Insulation:<\/b> Integrated rubber head pads dampen impact sound and footstep vibration across subframes and living spaces below.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

\"adjustable<\/a><\/span><\/div>

BRUNDLE RISERS<\/h4>\n<\/div><\/div><\/div>
\"Rynodeck<\/a><\/span><\/div>

RYNODECK PEDESTALS<\/h4>\n<\/div><\/div><\/div><\/div><\/div>

Self-Levelling Head Options<\/h2>\n<\/div><\/div><\/div><\/div><\/div>
\"adjustable<\/a><\/span><\/div>

FOR ALUMINIUM JOIST<\/h4>\n<\/div><\/div><\/div>
\"Rynodeck<\/a><\/span><\/div>

FOR WOODEN JOISTS<\/h4>\n<\/div><\/div><\/div>
\"Synergised<\/a><\/span><\/div>

FOR PORCELAIN TILES<\/h4>\n<\/div><\/div><\/div><\/div><\/div>
Order Adjustable Pedestals<\/span><\/a><\/div><\/div><\/div><\/div><\/div>

Technical Specifications & Compliance<\/h2>\n<\/div><\/div><\/div><\/div><\/div>

Technical Specifications:<\/h4>\n

\u2022 <\/b>Height Range:<\/b> 10mm to 975mm (using low-profile cradles, standard adjustable risers, and stackable extension pads\/rods).<\/p>\n

\u2022 Load-Bearing Capacity:<\/b> Up to 1,500 kg per pedestal (varies by specific model and elevated height).<\/p>\n

\u2022 Slope Correction Capability:<\/b> Self-levelling heads automatically correct gradients and drainage falls from 0% to 5% (\u00b15\u00b0).<\/p>\n

\u2022 Material Composition:<\/b> UV-stabilized, 100% recyclable High-Density Polypropylene (HDPE).<\/p>\n

\u2022 Temperature Resistance:<\/b> Formulated to withstand extreme thermal conditions ranging from -30\u00b0C to +120\u00b0C.<\/p>\n

\u2022 Base Footprint:<\/b> 200mm to 210mm diameter circular base plate, designed to distribute surface load evenly across sensitive roofing membranes.<\/p>\n

\u2022 Acoustic & Non-Slip Pad:<\/b> Integrated 2mm thick anti-noise and anti-slip rubber head coating for sound dampening and frame stability.<\/p>\n

\u2022 Locking & Safety Mechanism:<\/b> Equipped with an anti-unscrewing stop-block system and reverse-thread winder to prevent unwind under dynamic load vibration.<\/p>\n

\u2022 Chemical & Biological Resistance:<\/b> Resistant to mold, algae, frost, road salts, bitumen, and standing water.<\/p>\n

\u2022 Subframe Compatibility:<\/b> Head profiles available for timber joists, composite subframes, aluminium framing channels, and porcelain paving spacers.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

Testing & Compliance Status:<\/h4>\n

\u2022 Building Regulations Height Threshold:<\/b> Suitable for domestic and commercial balconies, roof terraces, and raised decks on buildings below 11 metres in height (where fire-rated non-combustible systems are not mandated).<\/p>\n

\u2022 High Structural Compression Load:<\/b> Engineered for high compressive weight capacity (RynoDeck pedestals rated up to 1,500kg+), ensuring structural stability under heavy residential and commercial foot traffic.<\/p>\n

\u2022 Integrated Safety & Anti-Displacement Controls:<\/b> Features anti-unscrewing safety blocks and a reverse-thread dual-locking mechanism (clockwise base, anti-clockwise upper sections) to prevent thread backing-out and movement under dynamic loads.<\/p>\n

\u2022 Substrate & Waterproofing Protection:<\/b> Designed with a wide circular footprint (200mm base diameter) that spreads dead and live loads evenly across surfaces, protecting roof waterproofing membranes without piercing or puncturing.<\/p>\n

\u2022 Environmental & Material Durability:<\/b> Manufactured from 100% recyclable, UV-stabilized Polypropylene and recycled glass-filled nylon that operate in extreme temperatures (-30\u00b0C to +120\u00b0C) and are completely resistant to rot, algae, mold, bitumen, and standing water.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

Adjustable Pedestals & Cradles Testing Report<\/h4>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Test<\/th>\nTest method<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Slope Correction Range<\/strong><\/td>\nIntegrated Self-Levelling Ball-and-Socket Head<\/td>\n-5\u00b0 to +5\u00b0 (up to 6\u00b0 \/ 10.5% for RynoDeck)<\/td>\n<\/tr>\n
Height Adjustment Range (Cradles)<\/strong><\/td>\nManual Screw-Thread \/ Low-Profile Setup<\/td>\n10 mm \u2013 40 mm<\/td>\n<\/tr>\n
Height Adjustment Range (Pedestals)<\/strong><\/td>\nModular Base + Winder + Extenders \/ Extension Pads<\/td>\n23 mm \u2013 975 mm (Custom configurations up to 1000 mm)<\/td>\n<\/tr>\n
Pedestal Base Footprint & Load Spreading<\/strong><\/td>\nDirect Surface Contact Footprint Analysis<\/td>\n\u00d8 200 mm \u2013 210 mm<\/td>\n<\/tr>\n
Compressive Load Capacity<\/strong><\/td>\nStatic Vertical Load Testing<\/td>\n1,500 kg+ per unit<\/td>\n<\/tr>\n
Temperature Resistance & Working Range<\/strong><\/td>\nThermal Exposure Testing<\/td>\n-30\u00b0C to +120\u00b0C<\/td>\n<\/tr>\n
Acoustic Performance \/ Sound Isolation<\/strong><\/td>\nAnti-Slip Rubber Head Coating & Base Pad Layer<\/td>\n2 mm top head coating + 3 mm rubber base pad<\/td>\n<\/tr>\n
High-Rise Lateral Stability (\u2265800 mm)<\/strong><\/td>\nMid-Point Collar &
\nCross-Bracing Rods<\/td>\n		Stabilised against lateral sway and wind loads<\/td>\n<\/tr>\n
Building Height Suitability<\/strong><\/td>\nUK Building Regulations Approved Document B<\/td>\nCertified for balconies\/terraces under 11 metres<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div><\/div><\/div><\/div>
\"adjustable<\/span><\/div><\/div><\/div><\/div><\/div>

FAQs<\/h3>\n<\/div><\/div><\/div><\/div><\/div>