Keep pipes level, protected and supported.
Our Polystyrene Plumber Blocks are commercial-grade EPS (expanded polystyrene) supports for plumbing, gas and HVAC services on rooftops, plant rooms and slab/ground runs. Lightweight yet robust, they help prevent pipe sag, reduce vibration and keep lines aligned over uneven surfaces.
Why use EPS plumber blocks
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Lightweight & fast to install – easy handling on roofs and in tight spaces
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Closed-cell EPS – water-resistant and rot-proof
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Commercial applications – plumbing, HVAC, mechanical services & ducting
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Customisable – talk to us about alternative sizes or cut-outs
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Note: For long-term outdoor exposure, protect EPS from UV (paint, capping or shielding). Not rated for structural loads—confirm requirements with your engineer.
Common uses
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Supporting chilled/condensed water, gas and waste pipes
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Spacing and levelling pipe runs over membranes, gravel or uneven substrates
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Reducing vibration transfer from mechanical plant
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Creating service saddles and stand-offs without heavy concrete blocks
Sizes (mm)
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Small Block: 300 × 300 × 100
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Large Block: 500 × 300 × 300
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Round Block: Ø300 outer × Ø110 inner × 100 thick
Specifications
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Material: Commercial-grade expanded polystyrene (EPS)
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Colour: White
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Made/Cut: Australia
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Installation: Place on clean, flat surface; secure pipes per local codes (straps/clamps not included)
What’s included
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1 × EPS plumber block in your chosen size.
