Conservatory roofs get overlooked in a lot of general house cleaning routines, but they're exposed to exactly the same moss, algae and grime as the main roof, and being lower and more visible from inside, the dirt is often more noticeable day to day. Conservatory roof cleaning cost depends mainly on roof material and size.
This guide covers realistic pricing for both polycarbonate and glass conservatory roofs, what gulley clearing adds, and why gentle cleaning methods matter more here than almost anywhere else on the house.
Typical conservatory roof cleaning prices
For a standard-sized conservatory, expect £80-£180 for a roof clean, with larger conservatories or orangeries running £150-£280. Pricing is usually based on roof size and material rather than a flat per-conservatory rate, since glass and polycarbonate need slightly different treatment.
Combining a conservatory roof clean with a window clean visit is common and often cheaper per job than booking them separately, since the access equipment and setup overlap.
Poly versus glass roofs
Polycarbonate roofs are lighter and more prone to scratching if cleaned with anything abrasive, so a soft-bristle approach with the right cleaning solution is important to avoid a permanently scuffed, hazy appearance. Glass roofs are more resilient to gentle brushing but can still be damaged by high pressure or harsh chemicals affecting seals between panels.
Both roof types benefit from a pure water finish, which leaves no streaking and rinses cleanly without residue, particularly important on a roof you look up through every day from inside.
Gulley clearing and gentle methods
The gulley (the channel running along the base of the conservatory roof where it meets the walls) collects leaves, moss and debris and is a common source of leaks if left blocked, since water backs up rather than draining away properly. Clearing the gulley is often included in a conservatory roof clean, or offered as a small add-on, typically £15-£30 on top of the main clean.
Gentle methods matter enormously here: pressure washing a conservatory roof risks forcing water under panels and into seals, which can cause leaks that weren't there before. A soft brush and pole system, or hand cleaning from appropriate access, with pure water rinse is the safer, recommended approach.
Why it's worth doing properly
A conservatory roof you look through daily shows up dirt and algae far more obviously than a main roof you rarely see up close, so a clean genuinely changes how the room feels, letting more natural light through and making the space noticeably brighter. It's a small job with a disproportionately noticeable result.
Choosing an operator with genuine conservatory experience matters, since the seals, panel edges and lightweight structure need a lighter touch than a standard tiled roof, and someone used to rougher work on tougher surfaces can occasionally cause more harm than good without meaning to.
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