Choosing a pool robot for your pool surface: concrete, pebblecrete, fibreglass or vinyl

Most robotic pool cleaners claim to work on every surface, but the brush or roller decides how well a robot grips the walls, how fast it wears, and how gentle it is on a liner. Here's what the makers actually say about concrete and pebblecrete, fibreglass, tiles and vinyl, which brushes suit each, and what to do if your robot slides off the walls. Checked 1 and 2 November 2026.

By Domestic Robot · Editor: Christian Ganaban · Updated 2 November 2026

Researched, not testedThis guide is based on what Maytronics, Beatbot, Aiper, Zodiac and WYBOT say about brushes and surfaces, Australian dealer listings and independent reviews, all linked below. We haven't tested these robots in our own pools.

Quick answer

Match the brush to the surface. For rough surfaces like pebblecrete, exposed aggregate and quartz finishes, Maytronics recommends its Combined Brush; for smooth concrete, fibreglass, tile and vinyl, its Wonder Brush. Most other robots (Aiper, Beatbot, WYBOT) use one PVC or silicone brush or roller and list concrete, fibreglass, tile and vinyl as compatible. Rough surfaces wear brushes faster. Fibreglass and glossy tile are slippery, so wall-climbing grip is the issue. Vinyl liners need gentle brushes and no sharp edges. Brushes are consumables and aren't covered by warranty, so factor in replacements.

Which brush for which surface

Surface	What it means for a robot	What the makers recommend
Pebblecrete, exposed aggregate, quartz or granite finishes	Rough; wears brushes and tracks faster	Maytronics: Combined Brush (CB) for coarser surfaces such as quartz, granite or pebble. Other brands: PVC or silicone rollers, expect faster wear
Smooth or polished concrete, render	Moderate grip	Maytronics: Wonder Brush (WB) for smooth concrete. PVC brushes generally suit concrete
Fibreglass	Smooth and slippery; grip on walls is the challenge	Maytronics: Wonder Brush. Beatbot: foam brushes suit smooth surfaces; an over-polished gelcoat can cause slipping
Glossy tile and mosaic	Slippery; very smooth mosaic walls are harder to climb	Maytronics: Wonder Brush. Beatbot: foam brushes for tiles and mosaic; WYBOT suggests its supplied floating blocks on slippery tiles
Vinyl liner (in-ground or above-ground)	Soft; sensitive to sharp edges and heavy brush pressure	Maytronics: Wonder Brush. Beatbot: PVC brushes suit vinyl; avoid robots with worn, sharp-edged parts

Maytronics guidance is from its Australian replies on ProductReview.com.au and Australian dealer Dowdens' listings; Beatbot's from its compatibility and wall-climbing guides (updated May 2026). Checked 1 and 2 November 2026.

Concrete and pebblecrete pools

Concrete pools with pebblecrete, exposed-aggregate or quartz finishes are common in Australia and are the roughest surface a robot meets. They're easy to grip but hard on brushes and tracks. Maytronics' Australian team recommends its Combined Brush for coarser surfaces such as quartz, granite or pebble, and Australian dealers sell some Dolphin models in separate “smooth” and “coarse” surface versions (for example the Dolphin M 400 at Dowdens). If you're buying a Dolphin for a pebblecrete pool, make sure it's the coarse-surface version.

Other robots: Zodiac lists concrete, pebblecrete, quartzon, tile, fibreglass and vinyl for its iQ robots; CyberShack's Australian review lists pebblecrete as compatible with Aiper's Scuba X1 but notes abrasive surfaces wear rollers and treads faster; and EFTM found WYBOT's C2 Vision climbed pebblecrete walls out of the box. Beatbot says brushes wear faster on concrete. Check brushes monthly; our pool robot maintenance guide explains what to look for.

Fibreglass pools

Fibreglass shells are smooth and slippery, so the question is grip, not wear. A Queensland fibreglass pool builder says robotic cleaners are generally safe on gelcoat. Maytronics recommends its Wonder Brush for fibreglass. Beatbot says foam brushes suit smooth surfaces and lists over-polished gelcoat as one reason a robot can't climb walls, along with algae, biofilm and sunscreen film. If your robot stalls halfway up the wall, clean and balance the pool before blaming the robot, then check whether a softer, grippier brush is available for your model.

Tiled pools

Glossy tiles and mosaics give the least grip. Beatbot says very smooth mosaic walls are harder to climb and recommends foam brushes for tiles; WYBOT recommends using the supplied floating blocks on slippery tile; Maytronics' Wonder Brush is its choice for tiles. Waterline tiles are where scum and sunscreen build up, so a robot that cleans the waterline (and grips well enough to stay there) matters more here than in a pebblecrete pool.

Vinyl liners and above-ground pools

Vinyl liners are soft. Beatbot warns they're sensitive to sharp edges and heavy brush pressure, and says PVC brushes suit vinyl. Maytronics recommends its Wonder Brush for vinyl. Most current robots, including Aiper's Scuba S1 (per CHOICE), list vinyl as compatible. Inspect the robot for cracked or sharp plastic before each season, and keep it out of the pool when you're not using it.

For above-ground pools, Beatbot says its robots support both above-ground and in-ground pools but are built for structural pools, not inflatable ones, and owners of soft-sided pools should check the robot's weight and brush pressure suit their pool. Minimum depths matter too: Beatbot lists 8 inches (about 20 cm) for the Sora 70. Our best robotic pool cleaner for above-ground pools has our picks.

What the main brands say

Robot	Surfaces the maker or reviewer lists	Brushes and notes	Our coverage
Maytronics Dolphin	Concrete, pebblecrete, fibreglass, tile, vinyl, depending on brush	Two brush types: Combined (coarse) and Wonder (smooth); some models sold in coarse and smooth versions	Dolphin review
Aiper Scuba S1	Concrete, fibreglass, vinyl, tiles (CHOICE)	PVC replacement brush sold in Australia	Scuba S1 review
Aiper Scuba X1	Concrete, fibreglass, pebblecrete, mosaic tile, vinyl (CyberShack)	Silicone front and rear rollers; abrasive surfaces wear them faster	—
Beatbot AquaSense 2 Ultra	Concrete, ceramic tile, vinyl, fibreglass	TPU tracks and PVC roller brushes	AquaSense 2 review
WYBOT C2 Vision	Climbed pebblecrete out of the box (EFTM)	Floating blocks supplied for slippery tile	C2 Vision review
Zodiac iQ robots	Concrete, pebblecrete, quartzon, tile, fibreglass, vinyl	Listed for the VX65 iQ (discontinued) and Duo-X DX4050 iQ	—

Prices change weekly in pool season, so we've left them out here; current Australian prices are in our best robotic pool cleaners guide and under-$1,000 picks.

Brushes, wear and warranty

Brushes are consumables. Maytronics Australia says brushes aren't covered by warranty, and that they wear faster with high chlorine, when the robot is left in the pool, or when it's the wrong type for the surface.
Wrong brush, poor grip. Beatbot says a brush that doesn't suit the surface can cause poor grip even when it's in good condition.
Budget for replacements on rough pebblecrete, and check that your robot's brushes and tracks are sold in Australia before you buy.
Liner damage. We found no maker statement about liner damage under warranty. If you have an expensive vinyl liner, ask the seller and keep the robot in good condition.

Salt chlorinated? Our salt water pool guide covers salt limits, rinsing and warranties.

Common questions

Can I use a robotic pool cleaner on a fibreglass pool?

Yes. Most robots list fibreglass as compatible, and Australian fibreglass pool builders say robotic cleaners are generally safe on gelcoat. Grip on smooth walls is the main issue; Maytronics recommends its Wonder Brush for fibreglass.

What's the best brush for a pebblecrete pool?

For Dolphin robots, Maytronics recommends the Combined Brush for coarse surfaces such as pebble, quartz and granite. Some Dolphin models are sold in separate coarse-surface versions in Australia. Expect brushes to wear faster on pebblecrete.

Will a pool robot damage a vinyl liner?

It shouldn't if it's suitable and in good condition. Beatbot warns vinyl is sensitive to sharp edges and heavy brush pressure; check the robot lists vinyl, use the recommended brush and replace cracked parts.

Why won't my pool robot climb the walls?

Common causes are algae or biofilm on the walls, sunscreen film, very smooth tile or polished fibreglass, a worn brush, or a brush that doesn't suit the surface. Clean and balance the pool, then check the brush.

Are pool robot brushes covered by warranty?

Usually not. Maytronics Australia treats brushes as consumables that aren't covered by warranty.

Sources

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