Conservatory Roof Cleaning Cost UK (2026): What Should You Expect to Pay?
A conservatory can be a beautiful extension to your home, but over time the roof often becomes dull, stained and covered in algae or moss. This leads many homeowners to ask an important question: how much does conservatory roof cleaning cost in the UK in 2026?
In this guide, we break down conservatory roof cleaning costs, explain what affects pricing, compare DIY cleaning with professional services, and help you understand what a proper service should include. Whether your conservatory has a glass or polycarbonate roof, this article gives realistic price expectations so you can budget with confidence.
If you are also reviewing exterior maintenance costs more broadly, you may find our main guide useful: Window Cleaning Prices UK (2026): Full Price Guide by Property Type.
How Much Does Conservatory Roof Cleaning Cost in the UK in 2026?
In 2026, professional conservatory roof cleaning in the UK typically costs between £80 and £250. The final price depends on the size of the conservatory, roof material, access, and how dirty the roof is.
Smaller conservatories with light staining are at the lower end of the scale, while large structures with heavy algae buildup or restricted access may cost more.
Average Conservatory Roof Cleaning Prices (2026)
| Conservatory Size | Typical Price Range |
|---|---|
| Small (lean-to) | £80 – £120 |
| Medium (victorian / edwardian) | £120 – £180 |
| Large or bespoke conservatory | £180 – £250 |
| Roof with heavy algae or moss | £200+ |
Prices shown are typical UK ranges for 2026. Access, roof type and condition can affect final quotes.
What Affects the Cost of Conservatory Roof Cleaning?
Unlike regular window cleaning, conservatory roofs require more care and time. Several factors influence the final cost.
Roof Material
Glass roofs are generally easier to clean and rinse fully. Polycarbonate roofs often hold algae more stubbornly and require softer brushes and gentler techniques, which can increase labour time.
Degree of Dirt and Algae
Light surface dirt can be removed fairly quickly. Heavy green algae, black mould spots, or moss buildup takes longer and may require specialist cleaning solutions.
Access and Height
Conservatories attached to two-storey homes or positioned above uneven ground may require extendable poles, specialist equipment, or additional safety measures.
Gutter and Frame Condition
If gutters around the conservatory are blocked or frames are heavily soiled, many companies will recommend cleaning them at the same time, which can affect the overall price.
What Is Included in a Professional Conservatory Roof Cleaning Service?
A proper professional service should be far more thorough than a quick rinse with water. A typical conservatory roof cleaning service includes:
- Gentle removal of dirt, algae and moss from roof panels
- Cleaning of roof bars and supporting frames
- Rinsing with pure or filtered water to minimise spotting
- Cleaning surrounding gutter edges where accessible
- Visual inspection for cracks or loose seals
Many exterior cleaning specialists also offer gutter cleaning. If you are considering bundling services, you may want to view our guide on gutter cleaning prices in the UK.
How Often Should a Conservatory Roof Be Cleaned?
Most conservatory roofs benefit from cleaning once every 12 to 18 months. Properties near trees or in shaded areas may require more frequent cleaning.
- Once per year: keeps the roof clear and bright
- Every 18 months: acceptable for low-debris areas
- After heavy algae buildup: sooner cleaning prevents staining
Leaving algae to build up for several years can cause permanent staining, especially on polycarbonate roofs.
DIY vs Professional Conservatory Roof Cleaning
Some homeowners consider cleaning their conservatory roof themselves, but this comes with risks and limitations.
DIY vs Professional Cleaning
| Factor | DIY Cleaning | Professional Service |
|---|---|---|
| Safety | Risk of slipping or damage | Trained and insured |
| Cleaning quality | Often patchy | Even and thorough |
| Roof protection | Higher risk of scratching | Correct tools and detergents |
| Time required | Several hours | Usually under 2 hours |
For most homeowners, professional cleaning offers better results with far less risk of damage.
Pros and Cons of Professional Conservatory Roof Cleaning
Pros
- Improves appearance and light entry
- Extends roof lifespan
- Reduces risk of staining and algae damage
- Safer than DIY cleaning
Cons
- Upfront cost
- Prices vary by access and size
- Poor providers may rush the job
Can Dirty Conservatory Roofs Cause Long-Term Problems?
Yes. Algae and organic growth can hold moisture against roof panels and seals. Over time this can contribute to:
- Discolouration and permanent staining
- Blocked conservatory gutters
- Reduced natural light
- Seal degradation
The NHS highlights that damp and mould can affect indoor air quality, particularly in poorly ventilated spaces like conservatories.
Frequently Asked Questions About Conservatory Roof Cleaning
1. Is conservatory roof cleaning worth the cost?
Yes. Regular cleaning improves appearance, protects roof materials and helps prevent long-term staining.
2. Can pressure washing damage a conservatory roof?
Yes. High-pressure washing can damage seals and panels and should be avoided.
3. Is conservatory roof cleaning safe during winter?
Yes, weather permitting. Many professionals clean conservatory roofs year-round.
4. How long does professional cleaning take?
Most conservatory roof cleaning jobs take between 60 and 120 minutes.
5. Does cleaning improve light levels?
Yes. Removing algae and grime can noticeably increase natural light.
6. Can I clean a polycarbonate roof myself?
You can, but incorrect products or tools may cause scratching or clouding.
7. Do cleaners also clean conservatory gutters?
Many do, often as an add-on service.
8. How often should conservatory roofs be cleaned?
Every 12–18 months is ideal for most UK homes.
Final Thoughts
Conservatory roof cleaning in the UK in 2026 is a worthwhile investment for homeowners who want to protect their property and keep their conservatory bright and usable. While prices vary, professional cleaning is usually affordable compared to the risk of long-term damage caused by neglect.
When choosing a service, compare experience, equipment and reviews rather than simply selecting the cheapest quote. A careful, professional clean pays off in the long run.
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