How to Clean and Maintain a Conservatory
Updated: 1 day ago
Conservatory cleaning is mostly a matter of clean water, a soft cloth and a little regularity. Conservatory maintenance is the part people forget: the seals, the gutters, the drainage and, on a hardwood room, the paint. A well-built conservatory will last decades, but only if the small jobs are done before they become large ones. This is the routine we give clients when we hand over a room.
How often should you clean a conservatory?
Glass and frames twice a year is enough for most rooms. As a seasonal checklist:
Spring: clean the glass and frames after the winter grime, inspect hardwood paintwork and touch it up, clear gutters if there are trees nearby.
Summer: keep door tracks free of grit and check blinds and vents are working.
Autumn: clean the glass again once the trees have dropped, clear gutters, downpipes and lantern drainage.
Once a year: check roof gaskets, cappings and the flashing against the house wall; lubricate hinges, locks and rollers; check weather seals.
Self-cleaning glass, which we can specify across our orangery and conservatory accessories range, stretches the glass cleaning interval considerably. Its coating breaks down organic dirt in daylight and lets rain rinse it away.
How do you clean conservatory glass?
Warm water with a small amount of mild detergent, applied with a soft sponge or microfibre cloth, then rinsed and dried with a squeegee or a clean cloth to avoid streaks. Work from the top down so dirty water runs over glass you have not yet cleaned. Avoid abrasive pads, scrapers on coated glass and anything containing ammonia or solvents, which can mark low-emissivity and solar control coatings on the inside face of a unit.
How do you clean conservatory frames?
Standard white frames: warm soapy water and a soft cloth. Avoid cream cleaners, bleach and solvents, which dull and yellow the surface.
Powder-coated aluminium: warm soapy water and a soft cloth, never abrasives or wire wool, because a scratch through the coating lets weather at the metal. Keep the drainage slots in the bottom of the frames clear.
Painted hardwood: clean the same way, then look for hairline cracks in the paint at joints and sills, where water gets behind the finish. Catch them early and a touch-up is all that is needed; leave them and the job becomes a strip and repaint.
Our period hardwood conservatories are finished with hand-applied paint systems, and a light maintenance coat applied when the finish begins to dull keeps them as they were at handover.
What about gutters, seals and flashing?
Clear the gutters, downpipes and any lantern drainage every autumn, and once a year check the glazing gaskets, cappings and the flashing where the roof meets the house wall, which is the most common leak point on a conservatory of any age. The glass or polycarbonate itself needs a different, more careful routine, never standing on it, which is set out in our guide to how to clean a conservatory roof.
What maintenance do doors and windows need?
Hinges, locks and rollers on bifolding and sliding doors benefit from a light lubricant once a year and from having their tracks kept free of grit. A door that has dropped slightly, so that it catches or the lock is stiff, usually needs a small adjustment rather than a repair, and it is worth having done before the mechanism wears. Weather seals around openings should be checked for splits and replaced when they no longer spring back.
What quietly damages a conservatory?
Pressure washers. They drive water past seals, strip paint from timber and can etch powder coating at close range. Bleach and strong cleaners, which mark coatings and degrade gaskets. Ladders leant against glazing bars. Climbing plants allowed to grow into gutters and behind frames. Trees dropping sap and leaves onto a roof that is never cleared. And the most common of all, doing nothing for five years and then discovering the cost of that in a single repair bill. A room maintained annually rarely needs anything more than the routine, which is a large part of why the answer to how long conservatories last varies so much from one home to the next.
Conservatory cleaning and maintenance questions, answered
Can you use a pressure washer on a conservatory?
We advise against it. Even on a low setting it forces water into places designed to keep water out and can damage paint and coatings.
How do you look after a wooden conservatory?
Keep the paint film intact. Inspect it every spring, touch up any cracks or chips in the correct paint system, keep gutters clear so water does not run down the frames, and plan a maintenance coat every few years.
Does a conservatory need professional servicing?
Not as a rule, but a periodic check of the roof seals and flashing is sensible on a large or complex room.
Is self-cleaning glass worth having?
On a roof, yes: rain and daylight do much of the work, so the most awkward cleaning job is needed far less often.
Talk to our design team
A conservatory that is looked after does not feel like a maintenance burden; it feels like a room that has always worked. If yours needs new seals, glazing or a roof looked at, we are happy to help.
