Webb Robotic Mower Review

Who is the Webb Robotic Mower For?

The Webb robotic mower is designed for homeowners with small to medium-sized, relatively simple lawns. It is best suited for those who want a set-and-forget solution to keep their grass trimmed without the physical effort of pushing a mower. The range is particularly popular in the UK, where Webb has a strong presence in garden machinery.

These mowers are a good fit for users who are comfortable installing a boundary wire and are looking for a reliable, no-frills machine from a brand with good UK support. They are less suited for those with complex gardens featuring many obstacles, narrow passages, or very steep slopes, as the mowers use a random navigation system rather than advanced GPS mapping.

Performance and Cutting Quality

Webb robotic mowers use a random navigation pattern, meaning they move in straight lines until they hit an obstacle or boundary wire, then change direction. This system is effective for maintaining an even cut over time, as the mower operates frequently, typically daily, to keep grass at a consistent height. The cutting height is adjustable, usually between 20mm and 60mm, allowing for seasonal adjustments.

Owner reviews consistently report that the Webb mowers provide a good, even cut on standard domestic lawns. The cutting deck is 18cm wide, which is standard for this class of mower. The mowers handle grass well in dry conditions, but like most robotic mowers, they can struggle with wet, heavy grass or leaves, which may require manual clearing. The random navigation means that some areas might be missed on a single run, but over a week of daily mowing, the coverage is generally thorough.

Build Quality and Reliability

Webb is a brand owned by the same parent company as Flymo and Bosch, and the build quality of their robotic mowers reflects this heritage. The plastic housing is robust and weather-resistant, designed to withstand typical UK rain and sun. The mowers are rated IPX5 for water resistance, meaning they can handle rain showers without issue.

Battery life is a key factor. The Webb mowers use an 18V lithium-ion battery pack. The WRM1000, for example, can run for about 60-90 minutes on a full charge, which is sufficient to cover its rated 1000m2 lawn. The mower automatically returns to its charging station when the battery is low. Replacement batteries are available, which is a plus for long-term ownership. Warranty is typically 2 years, which is standard for the price point.

Installation and Ease of Use

Installing a Webb robotic mower requires laying a boundary wire around the perimeter of your lawn and any obstacles like flower beds or trees. This process can take a few hours for an average garden. The kit includes pegs to secure the wire, and the mower comes with a detailed manual. Many users find the installation straightforward, though those with complex gardens may find it tedious.

Once installed, the mower is very easy to use. You set the cutting height and mowing schedule via the simple control panel on the unit. The mower can be programmed to mow at specific times, for example, early morning or late evening. It operates quietly, at around 60dB, which is quieter than a standard lawnmower and will not disturb neighbours.

What to Check Before Buying a Webb Robotic Mower

Lawn Size and Shape: Measure your lawn area accurately. The WRM500 is for up to 500m2, the WRM1000 for up to 1000m2, and the WRM1500 for up to 1500m2. Ensure your lawn is relatively open with few narrow passages, as the random navigation can struggle in tight spaces.

Slope Capability: Webb mowers can handle slopes up to 25% (about 14 degrees). If your garden has steeper sections, you may need a more capable model from a brand like Stihl or Husqvarna.

Boundary Wire Requirements: You will need to run a boundary wire around the entire lawn. This is a permanent installation, so consider if you are happy with this. The wire can be buried or pegged to the surface.

Compatibility with Accessories: The mower uses a standard 18V Webb battery. If you already own other Webb garden tools, this battery may be compatible, saving you money on spares.

Mistakes to Avoid

Underestimating Installation Time: Do not assume the mower is ready to go out of the box. Setting up the boundary wire and charging station can take several hours. Plan for this before purchase.

Ignoring Obstacles: The random navigation system does not map your garden. It relies on bumping into obstacles. Ensure that delicate plants or objects are protected, or create islands with the boundary wire to keep the mower away.

Not Adjusting Cutting Height Seasonally: In spring, grass grows faster. You may need to increase the mowing frequency or lower the cutting height. In autumn, raise the height slightly to avoid scalping. The mower needs manual adjustment for this.

Leaving Debris on the Lawn: Robotic mowers cannot handle large leaves, twigs, or toys. Clear the lawn before each mowing cycle to prevent the mower from getting stuck or damaged.