Garden Chemicals

Find all the best decking and patio treatments you need for proper patio and decking maintenance. Our garden chemicals tackle algae, moss, and weathering on a range of surfaces, including timber decking and paving slabs. Choose decking stains and wood treatments to seal, protect, and keep boards from splitting or greying. For patios, use a specialist patio sealer and patio cleaner to cut down on weeds, shift grime, and make pressure washing easier. Suitable for trade and DIY projects, you’ll find what you need to refresh wood, stone, or concrete. Remember to pick up protective gloves and brushes for safe, even application and to get more out of every bottle.

Q: What decking treatments do you stock?

A: We offer a range of decking treatments suitable for both timber decking and composite decking, whether you’re maintaining existing boards or starting fresh. Our range includes:

• Decking cleaners – to lift off dirt, algae, and green build-up before re-treating

• Decking stains – ideal if you want to refresh or change the colour of timber decking

• Decking oil – soaks into the wood to protect against moisture, cracking, and weather damage

• Wood treatments – designed to preserve and protect exposed timber from rot, fungus, and wear

Every product clearly lists the surfaces it’s suitable for – whether that’s softwood, hardwood, or composite – so you can choose the right treatment for the job. If you’re not sure which to go for, we’re always happy to help.

Q: What’s the best decking treatment for wooden decks?

A: For wooden decking, we recommend using a quality decking oil or stain from our range. These soak into the timber to repel water and help prevent cracking or warping. Look for products labelled as suitable for softwood or hardwood, and always follow the coverage guidance on the tin for best results.

Q: Do you stock treatments for composite decking?

A: Yes, you’ll find specialist composite decking cleaners and finishes in our garden chemicals range. These are designed to remove grime and algae without damaging the composite material. Make sure to check which treatments the decking manufacturer of your composite boards recommends beforehand.

Q: What patio treatments do you stock?

A: We stock all the patio treatments you need to help you clean, protect, and finish all types of patios, from stone slabs to block paving. Our range includes:

• Patio cleaners – to remove algae, moss, dirt, and grime from concrete, flags, and paving

• Jointing compounds – for repairing or replacing joints between paving slabs, helping to prevent weed growth and water damage

• Patio sealers – to protect the surface from stains, weather damage, and general wear, available in natural or wet-look finishes

Q: What’s the best treatment for block paving?

A: For block paving, use a paving sealer from our range to resist staining, weed growth, and fading. These are typically applied with a roller or brush after cleaning the surface. Choose between a clear finish or wet-look options, depending on your preference.

Q: Can I use the same treatment for both decking and patios?

A: Treatments are usually surface-specific. Decking treatments are made for timber or composite, while patio treatments suit concrete, block paving, or flagstone surfaces. Always check the product description for suitable uses to get the best result.

Q: How should I maintain a treated deck or patio?

A: Keep it in good condition by sweeping regularly to clear leaves, dirt, and debris. After cleaning, check for worn or patchy areas and reapply your oil, stain, or sealer as needed; usually once a year does the trick. Staying on top of it helps protect the surface from weather, algae, and everyday wear.

Q: Do you deliver decking and patio treatments across the UK?

A: Yes, you can order decking and patio treatments online for delivery across the UK. If you’d like advice on the right product for your garden, visit your local JT Atkinson branch to chat with our customer service team.