What a Cassette Housing Actually Protects
Retractable awnings come in open, semi-cassette and full cassette designs, and the difference is essentially how completely the fabric and mechanism are enclosed when the awning is retracted. It affects both appearance and how well the fabric survives a Yorkshire winter left in place.
Open frame designs
An open, or exposed-arm, awning leaves the rolled fabric visible and unprotected when retracted, with just the arms and roller bar exposed to the weather. It's typically the most affordable option and suits awnings that are used regularly and not left retracted for long stretches.
Semi-cassette housings
A semi-cassette wraps a protective cover around the top and back of the rolled fabric while leaving the front and underside more exposed, offering a step up in weather protection over a fully open design without the cost of a complete enclosure.
Full cassette housings
A full cassette completely encloses the rolled fabric and folding arms in a hard aluminium box when retracted, protecting against rain, UV and general dirt even through months of non-use. It's the option most often chosen where the awning will be left retracted for extended periods, such as over winter.
- Open
- arms and fabric exposed, most affordable
- Semi-cassette
- partial cover, moderate protection
- Full cassette
- complete enclosure, best weather protection
- All types
- fabric can typically be replaced independently
Appearance when not in use
A full cassette also tends to look tidier when retracted, presenting a clean box shape against the wall rather than a visible rolled fabric bundle, which matters to people who want the awning to look intentional even when it's not extended.
Whether it's worth the extra cost
For an awning used seasonally and left retracted through autumn and winter, a full cassette is generally a sound investment in fabric longevity. For one used frequently through the warmer months and rarely left rolled up for long, an open or semi-cassette design may represent perfectly good value.
Common questions
Does a full cassette awning cost significantly more?
Generally yes, since it requires more material and a more complex housing, though the difference varies by supplier and model.
Can I leave an open-design awning retracted all winter?
You can, but the fabric and mechanism are more exposed to weather, so a full cassette or a protective cover is often preferred for long winter storage.
Does the housing type affect how the awning extends?
Not significantly — the extension mechanism itself is largely independent of the housing type, which mainly affects protection and appearance when retracted.
Can fabric be replaced on any cassette type?
Generally yes across open, semi-cassette and full cassette designs, though access and labour involved can vary by system.
In short
Full cassette housings enclose the fabric completely for the best weather protection, while open designs suit frequent seasonal use.
What to do next
Tell us how often you'll retract your awning and we'll recommend a suitable housing type.
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