10 Best Headstone Cleaner 2025 in the UK

Wet & Forget Mould, Lichen & Algae Remover is a user-friendly cleaner designed for outdoor surfaces, including headstones. Its main appeal is the no-scrubbing approach—you simply dilute it with water, spray, and let nature do the rest, which makes it very easy to use. The formula is bleach-free and nearly neutral in pH, reducing the risk of damage to delicate stone while also being biodegradable, so it’s safer for the environment compared to harsher chemicals.

It targets common stains and growth like moss, algae, and black spots, gradually removing them without aggressive scrubbing or water blasting, which is good for preserving the condition of old headstones. However, because it works slowly over time using rain and wind, it may take weeks to fully see the cleaning effect. You should wear gloves and eye protection during application as a precaution, even though the formula is mild.

While it’s effective on a variety of surfaces, its gentle action means it may not be the best choice for very tough or deeply ingrained stains. For those seeking a low-maintenance, environmentally considerate cleaner for headstones that need regular upkeep rather than quick heavy-duty cleaning, Wet & Forget is a solid option.

The D/2 Biological Solution is a strong choice for cleaning headstones and other stone surfaces, especially if you're dealing with mold, algae, mildew, or lichens. It works well on a wide range of materials including marble, granite, limestone, and concrete, making it versatile for different headstone types. One of its big advantages is that it’s biodegradable and pH neutral, which means it’s safer for the stone and the environment compared to harsher chemical cleaners. It doesn’t contain acids, salts, or chlorine, so it won’t damage metals or glass nearby.

The product is also user-friendly—there’s no need to mix it before use, and it can be applied with simple tools like a brush or sprayer. Plus, it offers two cleaning methods: a quick 10-15 minute scrub method for faster results, or a no-scrub, no-rinse approach where it works over time with natural weathering. This flexibility is helpful depending on your time and effort. On the downside, while fast acting, some stubborn stains might require repeated applications, especially with the no-rinse method that takes longer to show results. Also, although it’s biodegradable and safe around plants, it’s still a chemical solution, so wearing basic protection when applying is wise.

The large 1-gallon size means you get plenty of product for multiple cleanings, which is great for maintaining larger monuments or multiple stones. This cleaner is effective, gentle on delicate surfaces, and environmentally friendly, making it a solid pick for anyone looking to preserve and refresh headstones without harsh chemicals.

The HG Headstone Cleaner offers a convenient solution for cleaning natural stone headstones like granite, marble, and bluestone. One of its strengths is its versatility with different stone types, ensuring it can be used on varied headstones without damaging them. Its spray format makes application straightforward, and a single 500ml bottle can cover a decent area of approximately 3 square meters. The product efficiently tackles common issues such as moss, bird droppings, algae, and general dirt buildup, making it effective in maintaining the headstone's appearance.

However, it's important to note that while it cleans effectively, care must be taken around lead and gold lettering as it can cause damage if not rinsed off quickly. One useful tip is applying vaseline to protect such lettering during the cleaning process. In terms of safety, HG advises users to handle the product carefully, especially near any bright metals or lettering. The instructions recommend spraying from a close distance and allowing it to work for 25 minutes before brushing and rinsing, which suggests it requires a bit of time and attention to achieve optimal results.

The product is also marked by its grape scent, which some users may find pleasant. Despite any potential drawbacks, its limitations in delivery outside mainland UK could also be a consideration for international buyers.