Sun Shades
When you think about sun shade, the most important question to ask is whether or not it is effective. Effective shade helps block direct UV and it helps to block indirect UV.
Indirect UV occurs when the UV "bounces” or is reflected from surfaces such as sand, water, concrete, white paint on sides of buildings or snow. Therefore, while you are sitting under the umbrella at the beach, you can still be getting burned from UV that bounces up from the sand or water. Effective shade at the beach would be a structure with sides, such as a canvas cabana, which would block indirect UV.
When are planning shade, you should consider the following
- Time of day. If you are planning the placement of a structure for shade you need to understand the sun’s path, and the direction/length of shadow at different times of the day
- Nearby surfaces that reflect UV. This will help determine the appropriate design for a shade structure.
- Type of structure
Trees are often the first choice for shade. They are beautiful and can last for generations. Make sure the tree you select will provide thick foliage and will grow trouble free in the area you select.
Shade sails can be used almost anywhere they can be attached to an existing structure or to posts. They are usually made of a high-density polyethylene cloth that is especially manufactured with tensioned fabric structures in mind. They do not generally block indirect UV and you should still wear sun protective clothing and sunscreen.
Awnings over windows cut down on heat levels in the interior of buildings and block UV. Window awnings that are made from solid, outdoor roofing materials provide the highest UV protection. However, most window awnings are made from canvas like materials and the UV protection level will depend on the tightness of the weave, color and wear. Find a label or guarantee of a UPF 50+ for any awning material.
Umbrellas and canopies can be especially an especially helpful method of sun protection. They do not however protect against indirect UV exposure, so sun protective clothing and sunscreen should still be worn. Look for labels that show UPF.
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