{"id":12397,"date":"2020-12-18T08:48:00","date_gmt":"2020-12-18T07:48:00","guid":{"rendered":"https:\/\/www.neva.eu\/uncategorized\/disadvantages-of-external-blinds-higher-noise-level-in-wind-and-lower-darkening-ability\/"},"modified":"2025-07-14T14:09:31","modified_gmt":"2025-07-14T12:09:31","slug":"disadvantages-of-external-blinds-higher-noise-level-in-wind-and-lower-darkening-ability","status":"publish","type":"post","link":"https:\/\/www.neva.eu\/en\/advice-and-instructions\/disadvantages-of-external-blinds-higher-noise-level-in-wind-and-lower-darkening-ability\/","title":{"rendered":"Disadvantages of external blinds? Higher noise level in wind and lower darkening ability"},"content":{"rendered":"
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They aren\u2019t able to darken the room 100%<\/h2>\n <\/section>\n\n\n
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One of the main reasons why real estate owners buy external blinds is to control the amount of light in the room. Blinds are very variable in that thanks to their tilting slats, but the truth is that they can\u2019t create absolute darkness in the room.<\/p>\n <\/section>\n\n\n

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This is because the slats of the blinds contain small holes through which a textile lift tape passes and a bit of light shines. Even when the slats are tilted towards one another as much as possible, they don\u2019t fit to one another so tight as to darken the room completely.<\/p>\n <\/section>\n\n\n

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The type of slat you select matters a lot, though. In terms of darkening, Z90<\/a> slats are most efficient, almost equalling roller blinds. On the contrary, C65 slats screen the least and create more of a gloom in the room<\/a>.<\/p>\n <\/section>\n\n\n

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\u201cIf you live in a house that has got a large garden, is in a secluded place or near woods, where you aren\u2019t disturbed by strong sources of night lighting, you don\u2019t have to deal with that at all. But for houses in densely built-up areas or on busy streets with public lighting we recommend Z\u2011type blinds for almost perfect darkening, or combining blinds and interior drapery. Similarly, consider shading if you work in night shifts and often sleep during the day\u201d, says<\/em> Jan Gajdo\u0161, NEVA\u2019s Product Manager.<\/p>\n <\/section>\n\n\n

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They are noisier in strong wind<\/h2>\n <\/section>\n\n\n
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External blinds have slats up to 90 mm wide, so in calm conditions or in gentle winds they don\u2019t move at all and are completely noiseless. If the blinds are guided on cords, strong winds may start them vibrating. The slats then hit the glass or one another. That\u2019s also why we recommend installing blinds into lateral guide profiles, where they are anchored securely.<\/p>\n <\/section>\n\n\n

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At NEVA we also recommend that you consider the pros and cons of external shading in rather windy places, for example, in mountain lodges. On higher levels of high-rise buildings where there are also often windy conditions, it is possible to use so-called sandwich fa\u00e7ades. They allow blinds to be installed and, in addition, they protect them from the weather.<\/p>\n <\/section>\n\n\n

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\u201cAll external shading is susceptible to wind. If a really strong wind blows, we recommend pulling up external blinds\u201d,<\/em> Miroslav Sedl\u00e1\u010dek, NEVA\u2019s Design Manager, points out. Thanks to their connection to a smart home<\/a> with a wind sensor you can then set the blinds to pull up automatically during strong winds.<\/p>\n <\/section>\n\n\n

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It might interest you: wind resistance of external blinds<\/a><\/p>\n <\/section>\n\n\n

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In many cases, the solution may be installing screen roller blinds, which are more resistant to wind compared to blinds.<\/p>\n <\/section>\n\n\n

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In some cases, they decrease the window\u2019s headroom<\/h2>\n <\/section>\n\n\n
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External blinds need space into which the rolled-up slats of the blinds move. A special cover sheet or box serves that purpose. For new constructions or buildings that have just undergone general renovation we recommend that you mount the blinds under the fa\u00e7ade after agreement with the architect or designer, where the cover box is hidden elegantly under the fa\u00e7ade and isn\u2019t visible from outside or inside.<\/p>\n <\/section>\n\n\n

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If you opt for mounting under the fa\u00e7ade, the blinds are hidden elegantly in the box under the fa\u00e7ade. However, you should take into consideration the method of installation as early as when the construction project or general renovation is being designed.<\/figcaption><\/figure>\n <\/section>\n\n\n
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But you can\u2019t hide the box under the fa\u00e7ade during partial renovation or when installing blinds on a completed construction. That\u2019s when you can turn to installation under a cover sheet. As the metal sheet is visible both from inside and outside, it may be aesthetically disruptive for some people and it also decreases the headroom of the window.<\/p>\n <\/section>\n\n\n

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If there\u2019s no space in the structural opening to install a box, a cover sheet is the solution. Interference with the design of the construction is minimal.<\/figcaption><\/figure>\n <\/section>\n\n\n
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You can also select a so-called fa\u00e7ade system<\/a>. It doesn\u2019t reduce headroom, so you\u2019ll use it mainly for installations above doors. However, a fa\u00e7ade system changes the design of the building considerably, which is not acceptable for everyone.<\/p>\n <\/section>\n\n\n

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A fa\u00e7ade system is suitable in the event that you buy a completed house where the installation of external blinds wasn\u2019t planned. Blinds then stick out from the fa\u00e7ade and are more noticeable.<\/figcaption><\/figure>\n <\/section>\n\n\n
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Mounting them is more demanding<\/h2>\n <\/section>\n\n\n
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DIY guys and self-help builders complain that compared to internal blinds, external blinds are markedly more complicated to install. We agree with this view wholeheartedly and that\u2019s why we advise you not to choose this method of installation<\/a>.<\/p>\n <\/section>\n\n\n

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\u201cBlinds need to be measured and installed with absolute precision; often millimetres matter. Every inaccuracy causes non-standard running of the blinds, shortens their service life and increases the risk of failures. In addition, you\u2019ll lose the NEVA warranty if you interfere with the blinds. So, it\u2019s best to entrust both measuring and installation to an experienced installation company, which we\u2019ll kindly recommend to you\u201d, says <\/em>Jan Gajdo\u0161.<\/p>\n <\/section>\n\n\n

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The lift tape wears out over time<\/h2>\n <\/section>\n\n\n
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The above-mentioned holes in slats involve one more minor problem. A lift tape passes through the metal slats and it wears out over time and needs to be replaced. Although at NEVA we use an above-standard 8mm tape from Switzerland (compared to the standard 6mm tape) and we process the holes in the slats in such a way that they aren\u2019t sharp and don\u2019t cut through the tape, it is good to make allowance for such a service operation to be carried out approximately after 10 years of operation.<\/p>\n <\/section>\n\n\n

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Insurance companies don\u2019t consider them a security element<\/h2>\n <\/section>\n\n\n
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If your blinds are pulled down and black out the room, no one can see inside your home and you\u2019ll put off burglars that may be passing by. At the same time, it is true that if someone is determined to break into your home, they\u2019ll simply pull the closed blinds apart and peek inside.<\/p>\n <\/section>\n\n\n

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\u201cThere are external security blinds available in the market that are guided in chains and feature extremely rigid slats. However, conventional external blinds don\u2019t have these features and insurance companies don\u2019t consider them a security element, either. Nevertheless, if you\u2019ve pulled down the blinds and, in addition, you set them as part of a smart home system to go down and up automatically twice a day, you may put off some burglars. That\u2019s because they can\u2019t tell that you\u2019re on holiday and the house is empty\u201d, concludes<\/em> Gajdo\u0161.<\/p>\n <\/section>\n","protected":false},"excerpt":{"rendered":"

External blinds are one of the most popular types of shading and have many advantages for which they are bought by customers all around the world. However, as nothing is ever black-and-white, blinds have got their limits as well. We don\u2019t hide this fact at NEVA \u2013 and we admit their weaknesses.<\/p>\n","protected":false},"author":11,"featured_media":11100,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","_daim_seo_power":"1000","_daim_enable_ail":"1","footnotes":""},"categories":[119],"tags":[],"class_list":["post-12397","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-advice-and-instructions"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t