How to Clean a Conservatory

Cleaning a conservatory can feel like a daunting task—it’s essentially a giant glass box that seems to attract every bit of moss, bird lime, and algae in the neighbourhood. However, with the right approach, you can get it sparkling without needing a professional crew.

Here is a step-by-step guide to tackling the job safely and effectively.

1. Preparation & Safety
Before you grab the bucket, keep these rules in mind:

Never walk on the roof: Conservatory roofs are not designed to bear human weight. Use a sturdy, secured ladder and a long-reach telescopic brush.

Pick your day: Avoid cleaning in direct, mid-day sunlight. The soap will dry too fast, leaving unsightly streaks. A cloudy but dry day is perfect.

Avoid pressure washers: High pressure can perish the rubber seals and force water into the frame joints, leading to leaks.

2. The Exterior Clean
Start from the top and work your way down so the dirty water doesn’t ruin already-cleaned sections.

The Roof
Clear Debris: Use a soft brush or a leaf blower to remove loose leaves and moss from the roof and gutters.

The Soapy Wash: Use a telescopic pole with a soft brush attachment. Mix warm water with a mild dish soap or a specialized PVC cleaner.

The Rinse: Use a garden hose on a gentle spray setting to rinse away the suds.

The Frames (uPVC)
Avoid Abrasives: Do not use cream cleaners with “grit” or scouring pads, as these will scratch the plastic.

Method: Use a soft cloth and soapy water. For stubborn stains or “greening” (algae), a dedicated uPVC restorer works wonders.

The Glass
The Pro Secret: Once washed with soapy water, use a squeegee for the bulk of the water.

The Finish: For a smear-free shine, buff the glass with a clean microfiber cloth or even crumpled-up newspaper.

3. The Finishing Touches
Don’t forget the “moving parts” that keep the structure healthy.

Gutters. Clear out muck to prevent overflow and dampness. Check that the downpipe isn’t blocked.
Window Tracks. Vacuum the grit out of the sliding tracks and wipe with a damp cloth.
Locks & Hinges. Apply a small amount of silicone-based lubricant to keep them moving smoothly.
Clear Drainage. Ensure the small drainage holes in the bottom of the frames are clear of debris.

4. The Interior
The inside is usually much easier, but it does collect “household film” (dust and cooking vapors).

Vacuum First: Get the cobwebs out of the corners and off the ceiling fans.

Glass & Frames: Use a standard glass cleaner. If you have blinds, dust them individually with a microfiber duster.

Top Tip: If your conservatory has self-cleaning glass, avoid using any soap or chemicals at all. Usually, a gentle rinse with clean water is all that’s required to avoid damaging the special coating.