The perfect summer? We’ve got it covered – safely install shade sails and marquees14. May 2019
When ice cream parlours, parks and open-air pools are overrun, patios and balconies provide a welcome outdoor retreat. Marquees and shade sails offer protection from the heat and blinding light. Shade covers should however be installed correctly for the sake of your own safety.
Whether it be for celebrations with friends and family, reading a book or relaxing while drinking a coffee before work – living spaces extend onto patios and balconies during warm seasons. But heat, blinding light or reflections on a laptop are just too much of a good thing. Marquees and shade sails made of UV light- and weatherproof materials allow inhabitants to get summer under control – even when there is sudden unexpected rain. One of the practical features of shade covers is that they provide a shield against prying eyes. Modern marquees and shade sails also blend into the overall appearance of the environment without standing out.
Marquee, shade sail or fixed canopy?
This is a question that comes up again and again when it comes to sun screens around the home. Each one of these systems has its advantages and drawbacks. A marquee is more suitable for small balconies or patios as shade sails require fixing to at least three points. On the other hand, shade sails can provide shade in even the largest of gardens and roof terraces, whereas the size of the marquee is limited by its load-bearing capacity. Both shade sails and marquees provide an optical upgrade to the house facade. The shade covers are available in a variety of different colours and can therefore be matched to the house or apartment. Marquees have the advantage that they can quickly be extended if needed, either with a crank handle or automatically with the touch of a button. Shade sails meanwhile first require setting up when it is sunny, which can be inconvenient. But they can remain outdoors in the wind and rain, while also being able to withstand high wind velocities. Marquees on the other hand need to be retracted at the slightest breeze. If it isn’t protected in time, it risks being damaged by the wind. Both marquees and shade sails can be an affordable alternative to high-grade terrace canopies made of wood and glass. The latter may have the advantage of looking better, being able to withstand extreme winds and possibly even protecting the facade of the house, but they also cost significantly more than a shade sail or a marquee.
Securely installing a shade sail
Shade sails cover large surfaces in the garden or on the patio. Secure installation is important to ensuring that the cover is able to withstand strong winds. The location where the shade sail is installed contributes to its safety. The ideal spot allows the desired area to be covered while being as shielded from the wind as possible. The following should be taken into account: the larger the shade sail and the steeper the inclination angle are, the higher the external wind forces will be. One of the corners should be placed lower down to allow rain water to run off while preventing puddles from forming. The recommended inclination angle is approximately 30 degrees.
Railings, poles, rafters and walls make suitable fixing points. The canvas is attached to these with the rings provided or with D-rings at the corners of the canvas. Anchor or angle plates with eyelets are used to affix the cover to a house. Stable poles with eye hooks are another potential fixing point. Variants made of steel that are cemented with ground sleeves provide a particularly secure hold, for instance. The poles should be installed at an angle of 10 degrees outwards from the direction of the pull for the benefit of the load-bearing capacity.
Test the placement of the canvas before fastening
Instead of embedding the poles in cement, they can also be post-installed into foundations or cemented surfaces. Bolt anchors and stainless steel concrete screws are especially suitable for this job. Accessories such as snap hooks, sail rope, steel cable and turnbuckles connect the eyelet on the anchor plate or pole to the canvas, allowing it to be put up. The canvas is laid out before being hung up so that its corners point towards to fixing points, which it is attached to before being pulled tight. Marquees are installed through fixing consoles that are anchored in the construction material with plugs, which the sun protection system’s supporting tube or hood unit can be attached to.
Heavy-duty fixings for safe installation
The suitability of the anchors and screws for wall, rafter and beam fixings depends on the anchoring base and the loads that the mount is subjected to. Heavy-duty fixing systems should be used to mount shade sails and marquees. Steel anchors are suitable for reinforced concrete and injection systems are recommended for masonry. The fischer bolt anchor FAZ II can be used in concrete without hesitation, for instance, while the fischer high-performance mortar FIS V can be used in all construction materials with its system components. Stand-off installation systems should be used if the facade has a thermal insulation system, in which case the installation system bridges the insulating material and attaches to the girder support system. fischer offers the Thermax 12 and 16 for this purpose, as an example. Push-through anchor sleeves such as fischer’s FIS H K bridge the distance between the external leaf and the inner supporting leaf in double-leaf masonry systems.
Use rustproof materials for installation
All steel anchors and anchor rods of injection systems or stand-off installation systems need to be chosen in stainless steel (A4) variants. Upon inserting the fischer Thermax, the thermal insulation system additionally requires careful sealing with the fischer all-round gluing and sealing adhesive KD.
Plastic anchors should not be used to mount shade sails and marquees, as these fixings can tear out of the wall all too easily in heavier winds. This can cause serious damage to people and property considering that marquees can weight 40 to 80 kilogrammes. Strict requirements (DIN EN 13561 and the BKTex directive) therefore guarantee that the “heavyweights” and their fixings are able to withstand high tensile and wind loads. When installing marquees and shade sails it is generally recommended to ask an expert’s opinion, such as from a fischer application engineer.