10 Best Cordless Caulk Guns 2025 in the UK

The Ryobi RCG18-0 18V ONE+ Cordless Caulking Gun is designed for convenience and flexibility, especially for those already invested in the Ryobi ONE+ system. One of its standout features is the universal battery compatibility, which allows users to power multiple tools with the same battery, though it's important to note that the battery itself is not included. This means you'll need to purchase it separately if you don't already own one.

Weighing in at 1.62 kilograms, the gun is relatively lightweight, making it easier to handle for extended periods without causing fatigue. The trigger lock feature is a practical addition, reducing the risk of accidental starts, which can be particularly useful for beginners.

In terms of performance, the flow control dimmer is a key feature, providing even application of caulk, which is crucial for ensuring a smooth, professional finish. However, the specifics of the thrust ratio aren't detailed, making it difficult to assess its power relative to other models. This might be something to consider if you're dealing with particularly thick materials.

The quick push removal mechanism for cartridges streamlines the process of changing caulk tubes, thus saving time during a project. This, combined with the heavy-duty gear and cartridge holder, suggests a durable build that can withstand frequent use. However, the lack of included batteries and possibly additional cartridges could add to the initial cost if you're not already equipped.

Customer reviews are generally positive, with a 4.4 out of 5-star rating, indicating satisfaction with the product for most users. If you're looking for a cordless caulk gun that offers flexibility and is part of a larger tool system, the Ryobi RCG18-0 is a compelling choice. Just keep in mind the additional costs for the battery if you're not currently using the Ryobi ONE+ system.

The Bosch Professional GCG 18V-310 cordless caulking gun offers a strong extrusion force of 3.5 kN, enabling it to handle thick adhesives with ease and helping you work quickly without struggling to push out material. It features nine different feed speeds controlled by a thumbwheel and trigger, providing good precision over how fast the caulk comes out, which is useful for different types of jobs. The built-in auto-reverse function prevents dripping by releasing pressure on the cartridge when you stop applying, making your work cleaner and reducing waste.

Weighing about 1.38 kg, it is fairly lightweight and won’t tire your hand too much during extended use. The caulking gun fits cartridges up to 310 ml, a common size compatible with most standard cartridges. The battery and charger are not included, but it uses Bosch’s 18V batteries that work with many other Bosch Professional tools, which is convenient if you already own compatible batteries. Battery life depends on the battery you have, but Bosch’s system is generally reliable for moderate daily use.

This tool is suitable for DIY enthusiasts and professionals who need a cordless, versatile, and well-controlled caulking gun for various sealing or bonding tasks. If you require a tool that includes a battery and charger immediately or one that handles larger cartridge sizes, you should consider those factors before purchasing.