About Our Palram Canopia Mythos Greenhouses
The Palram Canopia Mythos range delivers practical growing space with superior heat retention for UK gardeners. These polycarbonate greenhouses feature 4mm twin-wall panels that keep plants 5-8°C warmer than outside temperatures during cold nights—ideal for extending your growing season from March through October 🍂.
Every Mythos includes a pre-drilled aluminium frame for straightforward assembly and a low-threshold entrance for easy wheelbarrow access. Browse our collection of small greenhouses if you're working with limited garden space—the 6x4 Mythos fits patios and smaller plots perfectly.
🚚 Free UK mainland delivery included on all orders.
Key Features:
- ✅ Rust-proof aluminium frame (10-year warranty)
- ✅ 4mm twin-wall polycarbonate glazing (virtually unbreakable)
- ✅ Galvanised steel base plinth included
- ✅ Sliding lockable door with magnetic catch
- ✅ Integrated roof vent for temperature control
- ✅ Available in silver or grey finishes
Choosing Your Palram Canopia Mythos Greenhouse
📏 Size Options
The Mythos range spans from compact 6x4ft models (1.8m x 1.2m) up to spacious 6x10ft versions. The 6x8ft is our bestseller—it holds approximately 4 grow bags plus a potting bench while fitting most suburban gardens.
🌡️ Twin-Wall vs Clear Panels
Unlike clear single-wall glazing, the Mythos twin-wall construction creates an insulating air pocket. In UK winter conditions, expect 3-5°C better heat retention overnight compared to standard glass or single polycarbonate.
💰 Pricing & Upgrades
Prices start from £325 for the 6x4ft model, with larger 6x10ft versions at £510. Consider adding greenhouse staging to maximise vertical growing space, or explore greenhouse heaters for year-round cultivation.
🛠️ Assembly Timeline
Plan realistically—base preparation takes 2 hours, frame construction 3 hours, and glazing installation another 3 hours. Most customers complete assembly over a weekend. Our nationwide installation service handles everything if you prefer professional fitting.
Frequently Asked Questions About Palram Canopia Mythos Greenhouses
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Can two Mythos greenhouses be joined together for more space?
No, the Mythos structure isn't designed for modular extension lengthwise. Each greenhouse is engineered as a standalone unit. For larger growing areas, consider purchasing a bigger single model or positioning two units side by side with separate foundations.
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Does the Palram Mythos include a floor or base?
No floor is included, but every Mythos comes with a galvanised steel perimeter base plinth. This plinth anchors to concrete, paving slabs, or a timber frame. Read our greenhouse buyers guide for foundation preparation advice.
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Is twin-wall polycarbonate strong enough for UK winds?
Yes, when properly anchored. The 4mm twin-wall panels flex rather than shatter under impact. However, you must secure the base plinth to a solid foundation—concrete or paving slabs, not bare soil. Use appropriate anchor bolts for your surface type.
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Can I fit doors on both ends or relocate the door position?
No, the sliding door is designed for one specific end only. The frame engineering doesn't accommodate alternative door positions. Plan your greenhouse orientation during site preparation to ensure convenient access.
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How does twin-wall polycarbonate compare to glass for heat retention?
Twin-wall outperforms single glass for thermal insulation. The trapped air layer between panels reduces heat loss significantly—typically maintaining temperatures 3-5°C higher overnight. This extends growing seasons and reduces greenhouse heater running costs through winter.
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How do I prevent algae inside the twin-wall panels?
Seal exposed panel edges with aluminium U-profile tape (not standard duct tape). This prevents moisture entering the twin-wall chambers where algae thrives. Clean exterior surfaces annually with warm soapy water—avoid abrasive cleaners that scratch polycarbonate.
👋 Ready to find your perfect Mythos?
Browse the full collection above or call our greenhouse specialists on 0800 098 8877 for sizing advice. Greenhouse Stores has supplied UK gardeners since 2012—we're here to help.