A dirty conservatory roof blocks light, traps heat, and makes your extension feel gloomy. Over time, glass or polycarbonate roofs collect algae, moss, lichen, pollen, and grime that rain struggles to shift. Professional cleaning restores brightness, improves insulation performance, and protects the structure from long-term damage.

At D. Sullivan & Sons, we specialise in safe, effective conservatory roof cleaning across South Wales. With over 20 years’ experience, we use gentle methods to clean both glass and polycarbonate roofs without scratching or stressing seals. This guide explains why cleaning matters, our process, and how to keep your conservatory sparkling.

Why conservatory roof cleaning makes a difference

• Restore natural light: Remove films and deposits to brighten your space dramatically.
• Improve comfort: Cleaner roofs reduce trapped heat and condensation issues.
• Protect the structure: Algae and moss can degrade polycarbonate and attack seals on glass roofs.
• Boost kerb appeal: A spotless conservatory enhances your home’s overall appearance.
• Energy efficiency: Better light transmission reduces reliance on artificial lighting.

In the UK climate, conservatory roofs face constant exposure to rain, wind-blown debris, and shaded conditions that encourage organic growth. Coastal areas see extra salt deposits, while tree proximity adds sap and leaf litter.

Glass vs polycarbonate roofs

Each material needs a tailored approach:

• Glass roofs: Smooth surface but prone to hard water spots, bird fouling, and condensation streaks. Seals and gaskets need protection.
• Polycarbonate roofs: Textured channels trap dirt and algae. The material scratches easily, so abrasive methods are unsuitable.

We assess your roof type, age, and condition before starting to select the right tools and solutions.

Our safe cleaning process

We prioritise protection for your roof, frames, and interior:

1. Inspection: Check for damaged panels, cracked seals, loose fixings, or heavy moss. Flag any structural concerns.
2. Preparation: Protect soft furnishings, plants, and flooring inside. Clear external access routes.
3. Pre-treatment: Apply gentle, biodegradable solutions to loosen algae, lichen, and greasy films (where needed).
4. Cleaning:
   • Soft brushes or cloths for polycarbonate to avoid scratches
   • Specialist blades and squeegees for glass
   • Purified water rinse for spot-free drying
   • Low-pressure application to protect seals and joints
5. Frame detailing: Clean aluminium, uPVC, or timber frames around glazing bars.
6. Final rinse and dry: Ensure no streaks or residue remains.
7. Handover: Walkthrough to confirm satisfaction, plus maintenance tips.

Areas we cover:

We cover Swansea and the following areas:

Gowerton, Manselton, Penllergaer, Townhill, Birchgrove, Llansamlet, Fforestfach, West Cross, Brynmill, Port Tennant, Killay, Plasmarl, Dunvant, Pontarddulais, Uplands, Loughor, Morriston, St Thomas, Landore, Mumbles, Sketty, Mayhill, Clydach, Gorseinon and more.

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