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How to Stop Condensation in Your Conservatory

    Tuesday 3rd June 2025

    Tired of condensation in your conservatory? Here’s how to fix it.

    Let’s face it – condensation in conservatories is a real nuisance. You’ve invested time and money into creating a bright, inviting space, only to find water droplets forming on the windows, damp smells creeping in, and furniture starting to show signs of water damage or mould. Sound familiar? You’re not alone. 

    Condensation in your conservatory is one of the most common issues homeowners face, but the good news is that it’s entirely fixable. Whether you’re dealing with occasional misting or a more serious damp problem, this guide will help you understand why it’s happening and, more importantly, how to stop condensation in your conservatory for good, so you can reclaim it as a warm, dry, and usable space.

    Why does condensation happen in conservatories?



    Condensation in conservatories occurs when warm, moist air meets a cold surface – like the glass or roof panels in your conservatory. It’s especially common in conservatories due to their design and the materials typically used in their construction.

    Key causes of conservatory condensation:

    1. Temperature Differences: Conservatories often experience dramatic temperature swings, from freezing cold in winter to baking hot in summer. When warm air inside meets cold surfaces, condensation in your conservatory forms.
    2. Lack of Insulation: Older conservatory roofs, particularly polycarbonate ones, are poorly insulated, making them cold and prone to moisture build-up.
    3. Poor Ventilation: Without adequate airflow, humid air becomes trapped and settles on cooler surfaces.
    4. Excess Humidity: Everyday activities like cooking, drying clothes indoors, and even watering plants can release moisture into the air, worsening condensation problems.

    Why you shouldn’t ignore conservatory condensation


    Condensation isn’t just a cosmetic issue – it can lead to serious and costly consequences if left unchecked:

    1. Health Risks: Damp conditions provide the perfect breeding ground for mould and mildew, which can trigger allergies, asthma, and other respiratory issues.
    2. Damage to Your Conservatory: Water stains, warped window frames, and even structural damage can occur if condensation is ignored.
    3. Unusable Space: A damp, musty conservatory is far from the bright, welcoming space you envisioned. Condensation can make it uncomfortable and unappealing.
    The sooner you address the issue, the easier (and cheaper) it is to resolve. Let’s look at the solutions.

    How to stop condensation in your conservatory



    There’s no one-size-fits-all solution to conservatory condensation, but depending on the severity of the problem, you can take several effective steps. Here’s a breakdown of what you can do, with considerations for cost, effort, and long-term results.

    1. Improve ventilation
    Ventilation is one of the simplest and most effective ways to combat condensation. Proper airflow helps reduce humidity and prevent moisture from settling on cold surfaces.
    • Open Windows: Even a short burst of fresh air – 10 to 15 minutes a day – can balance humidity levels inside your conservatory.
    • Install Trickle Vents: These discreet vents allow air to circulate without letting in draughts or compromising warmth.
    • Add an Extractor Fan: If your conservatory is attached to a kitchen or bathroom, an extractor fan can help remove excess moisture.
    Effort: Low
    Cost: Free to moderate (£50–£300 depending on vents or fans)
    Effectiveness: Ideal for mild to moderate condensation problems.

    2. Control humidity levels
    Reducing the amount of moisture in the air is another key step to tackling condensation.
    • Use a Dehumidifier: A quick and effective solution, dehumidifiers draw excess moisture from the air. They’re particularly useful during colder months.
    • Avoid Drying Clothes Indoors: Wet clothes release significant amounts of moisture into the air. If you must dry laundry indoors, use a vented tumble dryer or run a dehumidifier nearby.
    • Add Moisture-Absorbing Plants: Certain plants, like peace lilies and Boston ferns, naturally reduce humidity levels while enhancing the look of your conservatory.
    Effort: Low to moderate
    Cost: Dehumidifiers start at around £50 and can go up to £200+ for larger models.
    Effectiveness: Effective for moderate problems but requires ongoing use.

    3. Insulate your conservatory
    Proper insulation prevents cold surfaces, making condensation in your conservatory less likely.
    • Install Thermal Blinds or Curtains: These create an insulating barrier, keeping cold air out and warm air in.
    • Upgrade to Double or Triple Glazing: Modern glazing options significantly improve thermal efficiency, reducing the risk of condensation.
    Effort: Moderate
    Cost: Thermal blinds (£100–£300), glazing upgrades (£1,000+)
    Effectiveness: Excellent for long-term results, especially in winter.

    4. Try simple DIY solutions
    For mild condensation issues, there are a few quick fixes you can try.
    • Wipe Down Surfaces Daily: Use a microfibre cloth to remove moisture from windows and frames before it causes damage.
    • Apply Anti-Condensation Coatings: These create a barrier on glass, making it harder for moisture to settle.
    • Use Insulated Window Films: An affordable and temporary fix to reduce heat loss and condensation.
    Effort: Low
    Cost: £10–£50 for coatings or films
    Effectiveness: Useful for short-term relief but not a permanent solution.

    5. Replace your conservatory roof
    If you’re looking for a long-term fix, replacing your conservatory roof is the most effective way to stop condensation altogether. Modern roofs, like a SupaLite tiled roof, are specifically designed to combat temperature fluctuations and moisture build-up.

    Why Choose a SupaLite Roof?

    • Exceptional Insulation: Keeps your conservatory warm in winter and cool in summer, eliminating cold surfaces where condensation forms.
    • Energy Efficiency: Reduces heating bills while maintaining a comfortable, usable space all year round.
    • Stylish and Durable: SupaLite roofs enhance the look of your conservatory and add value to your home.
    Effort: High (requires professional installation)
    Cost: Depends on size and complexity.
    Effectiveness: The most comprehensive and permanent solution to condensation.

    Take control of condensation today

    Condensation in your conservatory doesn’t have to be a constant battle. Whether you start with simple DIY solutions or opt for a long-term investment like a SupaLite tiled roof, there are plenty of ways to transform your conservatory into a warm, dry, and comfortable space.

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