Webb vs Mountfield Garden Sprayer
Choosing between a Webb and a Mountfield garden sprayer often comes down to brand preference and specific tank capacity needs. This comparison breaks down the key specifications, performance, and build quality of each to help you decide.
Quick answer
For most gardeners, the Webb WWS 20L provides the best balance of capacity, build quality, and value. The Mountfield 3115 15L is a solid, lighter alternative for smaller gardens, but the Webb's superior lance design and consistent pressure output make it our top pick.
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Research updated June 2026.
| Specification | Webb WWS 20L | Mountfield 3115 15L |
|---|---|---|
| Best For | Medium to large gardens | Small to medium gardens |
| Tank Capacity | 20 litres | 15 litres |
| Maximum Pressure | 3.0 bar | 2.5 bar |
| Lance Type | Adjustable brass nozzle | Fixed plastic nozzle |
| Warranty | 2 years | 2 years |
| Average Owner Rating | 4.3 / 5 | 3.9 / 5 |
| Weight (empty) | 2.8 kg | 2.1 kg |
Webb WWS 20L vs Mountfield 3115 15L: Which is better for your garden?
Both Webb and Mountfield are well-known brands in the garden tool sector, but they cater to slightly different user expectations. This comparison focuses on their most popular manual pressure sprayers: the Webb WWS 20L and the Mountfield 3115 15L. We have analysed published specifications, aggregated owner reviews from major UK retailers, and assessed build quality to provide a clear verdict.
Capacity and pressure: The core difference
The most obvious difference is tank size. The Webb WWS 20L holds 20 litres, making it suitable for larger gardens or tasks like treating lawns and hedges. The Mountfield 3115 15L is smaller and lighter, which is better for quick jobs or users who prefer a more manageable unit. Owner reviews consistently note that the Webb maintains pressure more effectively over a full tank, while the Mountfield can lose pressure as the liquid level drops, requiring more frequent pumping.
Build quality and lance design
Build quality is a key differentiator. The Webb WWS 20L features a brass nozzle on its adjustable lance, which is more durable and provides a finer, more consistent spray pattern than the plastic nozzle on the Mountfield. The Webb also has a wider opening for easier filling and cleaning. The Mountfield's plastic components are functional but feel less robust, with several owner reviews noting the trigger mechanism can feel flimsy after a season of use. The Webb's hose is also slightly longer, offering better reach.
Ease of use and comfort
Both sprayers use a similar pump mechanism. The Webb's pump handle is ergonomically shaped and requires less effort to build pressure, according to aggregated feedback. The Mountfield is lighter by about 0.7 kg when empty, which is noticeable during longer sessions. However, the Webb's larger capacity means fewer refills, which many users find more convenient. The Webb also includes a pressure relief valve, which is a useful safety feature not present on the Mountfield.
What to check before buying a garden sprayer
Before purchasing a sprayer, consider the volume of liquid you typically need. A 15-litre tank is fine for small borders, while a 20-litre tank suits lawns and large beds. Check the nozzle material: brass is more durable and adjustable than plastic. Also look for a pressure relief valve for safety and a wide tank opening for easy cleaning. A comfortable, padded shoulder strap is a major plus for longer use.
Mistakes to avoid when choosing a sprayer
A common mistake is buying a sprayer that is too large, leading to fatigue and chemical wastage. Another is ignoring the nozzle quality; a cheap plastic nozzle can lead to uneven coverage. Avoid models without a pressure relief valve, as over-pumping can damage the seals. Finally, do not overlook the warranty and parts availability; a 2-year warranty from a known brand like Webb or Mountfield offers better peace of mind than a generic model.
FAQs
Which brand is more reliable, Webb or Mountfield?
Webb generally has a slight edge in build quality and owner satisfaction, particularly regarding the lance and nozzle durability. Mountfield is still a reliable brand but uses more plastic components.
Is a 20-litre sprayer too heavy for a small garden?
It can be, especially when full. For a small garden, a 15-litre sprayer like the Mountfield is often more manageable. The Webb is better suited for medium to large gardens.
Can I use weed killer in both sprayers?
Yes, both are suitable for weed killers, fertilisers, and pesticides. Always clean the tank thoroughly after each use to prevent nozzle clogging and chemical residue.
Do these sprayers come with a shoulder strap?
Yes, both the Webb WWS 20L and the Mountfield 3115 15L include a padded shoulder strap for comfort during use.
Which sprayer has a better warranty?
Both offer a standard 2-year warranty, which is typical for garden sprayers in this price range. Webb's customer service is often rated slightly higher in owner reviews.
How do I clean a garden sprayer after use?
Rinse the tank with clean water, pump it through the lance, and then disassemble the nozzle for a thorough clean. This prevents chemical build-up and extends the sprayer's life.
Is the Webb sprayer compatible with Mountfield accessories?
No, the threads and fittings are not standardised between brands. You should only use accessories designed for your specific sprayer model.
Which sprayer is easier to pump?
The Webb WWS 20L is generally easier to pump, requiring less effort to reach and maintain its 3.0 bar maximum pressure. The Mountfield requires more frequent pumping.
Can I replace the nozzle on the Mountfield?
Yes, but it is a plastic nozzle that is not as easily adjustable as the Webb's brass nozzle. Replacement parts are available from Mountfield dealers.
Which sprayer is best for spot treatment?
For spot treatment, the lighter Mountfield 3115 15L is more convenient due to its smaller size and weight. The Webb is better for larger, continuous coverage.
Our verdict
The Webb WWS 20L is the best overall garden sprayer for most users, offering a larger capacity, a more durable brass nozzle, and better pressure retention. The Mountfield 3115 15L is a good budget-friendly choice for smaller gardens where lighter weight is a priority.