Professional Exterior Wash with Extreme Clean UPVC Cleaner 24.0 lb

Manufactured by Extreme Clean

Why Choose Our Products?

Non-caustic blend – safe on UPVC glass aluminium & rubber seals

Kills and removes algae moss lichen and condensation mould from UPVC surfaces

Leaves a hydrophobic film that helps prevent future staining & water pooling on UPVC

Concentrated formula: dilute up to 1:10 for maintenance use neat for heavy soil on plastic cladding

Free-rinsing formula – spray on agitate lightly rinse off for clean UPVC

Made & bottled in the UK – UN-approved HDPE drums

Free next-day mainland UK shipping

Extreme Clean UPVC Cleaner is a professional-grade, caustic-free detergent system formulated to restore and protect exterior plastics without causing etching, yellowing, or damage to surrounding finishes. Designed for domestic and commercial maintenance, this advanced cleaner penetrates stubborn grime, algae, mould, and traffic film on UPVC, powder-coated aluminium, acrylic panels, and other outdoor plastics. Its biodegradable surfactants break down greasy deposits and chalking, while a built-in quaternary biocide eliminates existing biological growth and inhibits regrowth for long-lasting cleanliness.

Unlike harsh caustic or acidic products, Extreme Clean is pH balanced to be gentle on window seals, gaskets, and neighbouring paintwork, making it safe for use around conservatories, skylight frames, fascia boards, and even garden furniture. A unique hydrophobic additive leaves a microscopic water-shedding layer after rinsing, helping surfaces stay cleaner for longer by slowing dirt adhesion and easing future maintenance.

This concentrated formula can be diluted for routine cleaning or applied neat for heavy staining, making it highly economical and adaptable for a wide range of tasks.

Key Features & Benefits

Professional strength: lifts chalking, traffic film, and greasy deposits without harsh caustics
Biocide action: kills and inhibits algae, mould, lichen, and mildew on exterior plastics
Protective finish: hydrophobic layer slows re-soiling and water streaking
Gentle yet effective: safe on UPVC, powder-coated aluminium, acrylic, and rubber seals
Economical concentrate: dilute up to 1:10 for maintenance or use neat on heavy contamination
Environmentally responsible: biodegradable surfactants and low-odour formulation
Made in the UK: manufactured and bottled under ISO-certified quality control

Ideal Uses

UPVC window and door frames
Conservatories, roof lanterns, and skylight surrounds
Fascias, soffits, and guttering
Cladding panels and dormer cheeks
Garden furniture, plastic benches, and pergola trims

Sizes & Coverage

Pack Size	Dilution 1:10 Coverage	Neat/Heavy Soil Coverage
5 L	≈ 150 m²	≈ 40 m²
20 L	≈ 600 m²	≈ 160 m²

Coverage varies depending on surface texture and level of contamination.

Why Choose Extreme Clean UPVC Cleaner

Non-caustic blend safe on UPVC, glass, aluminium, and rubber seals
Kills and removes algae, moss, lichen, and condensation mould
Leaves a hydrophobic film to help prevent future staining and water pooling
Concentrated formula allows flexible dilution for light or heavy cleaning
Free-rinsing system for easy spray-on, rinse-off application
Supplied in durable UN-approved HDPE containers
Manufactured and bottled in the UK with next-day mainland shipping available

Preparation

Safety: Wear gloves and eye protection during use. Work out of direct sunlight.
Surface Check: Ensure all areas are cool and dry. Remove loose dirt or debris before cleaning.
Plant Protection: Pre-wet any nearby plants and delicate landscaping to prevent accidental damage from overspray.

Dilution & Mixing

Routine Cleaning: Dilute up to 1:10 with clean water for regular UPVC maintenance.
Heavy Soiling: Use neat on severe staining, black run-off streaks, or stubborn algae growth.
Mixing: Stir or shake the container briefly to ensure consistency before decanting.

Application Steps

Apply: Use a low-pressure sprayer, sponge, or soft brush. Start from the bottom and work upwards to avoid streaking.
Dwell Time: Allow 2–5 minutes of contact. Keep the surface wet and do not allow the cleaner to dry on the surface.
Agitate: Lightly scrub stubborn areas with a non-scratch pad or soft-bristle brush for best results.
Rinse: Rinse thoroughly with a hose or low-pressure washer until all runoff is clear.
Repeat: A second application may be applied after 24 hours if required for severe biological growth.

Finishing Tips

Gloss Boost: After rinsing, finish with a microfiber cloth to enhance the natural gloss of UPVC window frames and panels.

Important Restrictions

Sensitive Surfaces: Not recommended for polished anodised aluminium without a prior test.
Chemical Mixing: Do not mix with bleach, acidic cleaners, or other chemicals.

Plants & Lawns: Avoid direct overspray onto delicate foliage. Always rinse any accidental contact immediately.

Property	Value
Active Ingredient	Sodium Hypochlorite 14–15%
CAS Number	7681‑52‑9
Appearance	Clear / pale yellow liquid
pH (neat)	11–13
Contact Time	5–15 minutes
Dilution Ratio	1:6 (routine) • 1:3 (heavy) • neat
Packaging	UN-approved HDPE drums – 5L / 10L / 20L

Property	Value
Shelf Life	6 months (store cool & dark)
Hazard Classification	Class 8 corrosive liquid – UN 1791
Reportable Substance	Regulated under UK Explosives Precursors Rules (>6% NaClO)

COVERAGE CALCULATOR

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Frequently Asked Questions

What surfaces can Extreme Clean UPVC Cleaner be used on?

This cleaner is suitable for UPVC window and door frames, conservatories, fascia boards, soffits, guttering, cladding panels, skylight surrounds, and plastic garden furniture. It is also safe for powder-coated aluminium and acrylic panels.

Is it safe for rubber seals and gaskets?

Yes, the balanced pH, non-caustic formula is gentle on rubber seals and gaskets, preventing damage or hardening during routine cleaning.

Can I use it on coloured or painted UPVC?

Yes, it is safe for coloured or painted UPVC as long as the surface is sound and not flaking. Always test a small area first to check compatibility.

Do I need to dilute the product?

For routine cleaning, dilute up to 1:10 with clean water. For heavy soiling or black streaks, it can be applied neat for maximum cleaning power.

How long should I leave it on the surface before rinsing?

Allow the cleaner to dwell for 2–5 minutes while keeping the surface wet. Do not let the product dry before rinsing.

Does it prevent algae or mould regrowth?

Yes, the cleaner contains a quaternary biocide that kills existing algae, mould, and lichen while helping to inhibit future regrowth.

Can it be used indoors?

It is designed for outdoor use on exterior plastics and should only be applied in well-ventilated areas.

Is it safe around plants and lawns?

Yes, but overspray should be avoided. Pre-wet surrounding plants and rinse them immediately if any product contacts foliage.

How much coverage can I expect from a 5 L container?

When diluted 1:10, a 5 L container covers approximately 150 m². Used neat, it will cover around 40 m² depending on surface texture and contamination.

What is the drying time after cleaning?

Rinse thoroughly after application and allow surfaces to air dry naturally. Drying times vary depending on weather and temperature.

Can I use a pressure washer with this cleaner?

Yes, you can rinse with a low-pressure washer after application. Avoid high-pressure settings that could damage seals or coatings.

How often should I clean UPVC surfaces with this product?

For best results, clean UPVC surfaces every 3–6 months, or more frequently in areas exposed to heavy traffic film, algae, or pollution.

Is it safe for glass and nearby painted surfaces?

It is generally safe for glass and paint when used as directed, but rinse any overspray promptly to avoid streaks or residues.

Does it leave a protective layer?

Yes, the cleaner leaves a microscopic hydrophobic film that repels water and slows the adhesion of new dirt, keeping surfaces cleaner for longer.

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£69.99 (inc VAT)

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Size

20 Litres 5 Litres

Product variants

*subject to stock levels at the time of your order.