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Decking Cleaning Services in Bristol

Bring your outdoor space back to life with decking cleaning in Bristol. From tired timber to algae-covered composite boards, our family-run team takes care of the details so you can enjoy a fresher, more inviting place to relax. We choose the cleaning method for your decking and offer timber sanding and oiling where suitable, using quality products from Osmo and Owatrol.
Get Your Free Quote
03335.771.788
Get Your Free Quote
03335.771.788
Eleven years of hands-on exterior cleaning experience have taught us that good results start with careful preparation. As a family-run business, we take pride in treating your property with care, explaining the options clearly and doing a thorough job. Our focus is thoughtful workmanship and lasting value, with a clear quote before work begins.
Our Certifications
Our Team is Certified, Trained & Fully Insured
SMAS Worksafe Certification
CSCS Certification
IPAF Certification
Full Insurance Certification
DBS Certification
Environmentally Friendly Certification
Freshly cleaned wooden decking (Bristol residential project)

The importance & benefits of professional decking cleaning

Freshly cleaned wooden decking (Bristol residential project)
A well-cared-for deck makes the garden feel welcoming again. Removing dirt and biological growth reveals the surface beneath and can reduce slippery build-up. For timber, cleaning also prepares the boards for suitable oiling and helps you spot areas that need attention before small maintenance jobs become bigger concerns.
Here’s why regular decking cleaning is essential:
Removing moss, algae and accumulated dirt can reduce slippery surface build-up and make your decking more pleasant to use. Wet boards can still be slippery, so sensible care and regular upkeep remain important.
Lift the tired look of your outdoor space and bring the focus back to the timber’s character or the finish of your composite boards. Where suitable, timber oiling adds a richer finish and helps resist weathering. Existing wear or permanent staining may remain.
A little care goes a long way: sweep away leaves, keep gaps clear and gently wash the boards with a suitable cleaner. Check the deck around every six months and ask us for advice when growth or wear returns.
Proper preparation gives suitable decking oil a clean surface to work on and makes developing problems easier to spot. Regular maintenance helps you care for sound timber; loose, damaged or rotten boards need repair or replacement before restoration.
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03335.771.788
Types of decking we clean and restore

Wooden decking

  • Gentle brushing and low-pressure rinsing where suitable.
  • Preparation tailored to the timber and existing finish.
  • Suitable cleaning products and targeted biocide treatment.
  • Optional sanding and Osmo or Owatrol oiling for dry timber.
  • Ideal for softwood, hardwood and aged timber decks.

Composite decking

  • Cleaning pressure selected to match the manufacturer’s guidance.
  • Specialist detergents designed for composite surfaces.
  • Brushing for heavy dirt or mould in textured boards.
  • Careful rinsing as directed by the cleaning product instructions.
  • Board type and care instructions checked before treatment.

Got a question or need a quote? We’re here to help.

Friendly advice, transparent pricing and quick responses, that’s what you can expect from GB Cleaning.
~680
Properties/year across all services
100%
Committed to customer satisfaction
24h
Quote response
11
Years Experience

How we clean your decking step by step

Timber and composite need different care. We assess the boards, existing finish and shaded areas before choosing a gentle cleaning approach. For wooden decking, we can also plan suitable biocide treatment, sanding and oiling as part of a restoration service.
Step 1

Detailed surface assessment

We check the type of material, level of dirt, shaded areas and any possible moisture issues. Based on these details, we choose the optimal combination of pressure, temperature and cleaning solution.
Step 2

Targeted cleaning and biocide treatment

Algae and other biological growth need more than a quick rinse. Where suitable for the boards and planned finish, we use a professional biocide treatment to target growth and help delay its return. Product choice, application and contact time follow the label, with surrounding planting and drainage considered. This supports cleaner, better-kept decking; any timber preservative protection against decay requires an appropriate product and cannot be assumed from an algae treatment alone.
Step 3

Gentle deep cleaning for timber and composite

Thorough cleaning starts with the right level of care. We lift dirt and deposits with suitable cleaning products and brushing, using controlled low-pressure rinsing only where the decking and finish instructions allow it. For composite boards, we follow the manufacturer’s care guidance rather than applying the same pressure to every brand. The aim is a refreshed surface ready for everyday use or the next stage of timber restoration.
Step 4

Timber sanding, oiling and ongoing care

Give your timber deck a finish worth coming home to. Once the boards are clean and sufficiently dry, we carry out suitable sanding where needed, remove the dust and apply a carefully selected Osmo or Owatrol decking oil. Preparation and drying follow the chosen product’s instructions; sanding and oiling can be scheduled together when the timber is ready. Suitable oils enhance the grain and help resist water and everyday weathering, with UV protection depending on the finish. We recommend a maintenance check around every six months, regular sweeping and gentle washing with a suitable cleaner. Trees, rain, shade and foot traffic all affect when the deck needs attention again. Composite boards receive their own care plan rather than timber oiling.
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03335.771.788

See the results of our decking cleaning

Decking cleaning case 01 before (Bristol)Decking cleaning case 01 after (Bristol)
Decking cleaning case 02 before (Bristol)Decking cleaning case 02 after (Bristol)
Decking cleaning case 03 before (Bristol)Decking cleaning case 03 after (Bristol)
Decking cleaning case 04 before (Bristol)Decking cleaning case 04 after (Bristol)

Why choose us for your decking cleaning?

Decking cleaned at a holiday home surrounded by nature

We’re trained and certified by the Water Jetting Association, ensuring every clean is safe, effective and meets industry standards.

We choose suitable brushing, products and rinsing for the timber or composite, checking the existing finish and manufacturer guidance. Careful preparation matters more than simply increasing the pressure.

For timber restoration, we assess the existing coating and use a suitable cleaning or preparation system. The wood must be ready and sufficiently dry before sanding or applying the selected decking oil.

We select products for your decking and apply them according to their instructions. Suitable biocide treatment targets biological growth, while planting, drainage and access for children and pets are considered during the work. We explain any aftercare or waiting period before you use the deck again.

Our 11 years of exterior cleaning experience shape a careful, practical approach to decking. We explain the suitable options, take time over preparation and treat your outdoor space with the care it deserves.

Our team holds IPAF certification for powered access equipment, allowing us to reach multi-level or elevated decks safely.

We’re SMAS Worksafe approved, following strict safety standards for both our team and your property.

We take pride in thorough preparation, careful cleaning and a tidy finish. Your deck’s appearance afterwards depends on weather, shade, nearby trees and everyday use. We leave you with practical advice to help maintain the result.

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03335.771.788

Decking cleaning services near you: Areas we cover

From Bristol gardens to outdoor spaces in Bath, Keynsham, Portishead, Nailsea and Clevedon, we help you make more of your decking. Send us a few photos and tell us whether you would like cleaning alone or timber restoration with sanding and oiling. We will explain what is suitable and provide a clear quote.
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Decking Cleaning Services in Bristol

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    More of our services in Bristol
    Decking Cleaning
    Driveway Cleaning
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    Brick Cleaning
    Graffiti Removal
    Paint Stripping
    Cladding Cleaning

    Common questions about decking cleaning

    How often does decking need to be cleaned?
    Check and lightly clean your decking around every six months, with more frequent sweeping beneath trees or in damp, shaded spots. Use a suitable mild cleaner and follow your decking or oil manufacturer’s advice. Professional cleaning and re-oiling depend on the condition of the boards, exposure and wear rather than a fixed timetable.
    We remove algae, moss, mould, mud, oil spots and general weather-related discolouration.
    Yes. We adjust pressure, temperature and detergents to suit each material, whether it’s softwood, hardwood or composite.
    Always. All detergents are biodegradable, pet-safe and environmentally responsible.
    Yes. Every technician is trained, certified and covered by full public liability insurance.
    Should I prepare the area before the team arrives?
    We only ask that you remove small furniture or plants. Our team handles everything else.
    Yes. We offer scheduled maintenance options to keep your decking in good condition all year round.
    No. As long as we have clear access to the decking and a water source, you don’t need to be present.
    Of course. We provide free, no-obligation quotes after a quick assessment or photo review.
    Yes, whenever our schedule allows. We’ll always try to fit you in as soon as possible.
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