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Understanding the effects of winter on granite setts
Preparing for winter care of your outdoor spaces starts with understanding how winter weather can potentially impact the materials used in your landscape. With its robust characteristics, granite is a durable choice for outdoor applications such as setts and kerbs. However, even granite setts can be affected by severe winter conditions, and so can granite kerbs if they are part of your setting.
One of the key impacts to be aware of is the freeze-thaw cycle. Winter often brings with it precipitation, and despite the relatively low porosity of granite, water can still find its way into tiny cracks or crevices within the setts. When temperatures drop, this water freezes and expands, potentially widening these cracks. The continuous repetition of this process throughout the season can cause physical damage and aesthetic changes to the granite setts.
Despite granite’s inherent resistance, chemical deicers and salt, frequently used to prevent ice buildup during winter, can influence its appearance and durability. The chemical constituents of deicers can seep into the surface of the granite, possibly causing discolouration over time. Salt, too, can have abrasive effects, leading to minor surface scratching or pitting.
The physical stress caused by snow removal should not be overlooked. Tools and machinery used to clear snow, such as shovels, ploughs, or snow blowers, can sometimes chip or scratch the surface of granite setts or kerbs. In addition, the weight and movement of vehicles over snowy or icy granite setts can contribute to wear and tear.
Alongside these direct impacts, winter can also create conditions that indirectly affect granite setts. The prolonged dampness associated with winter can encourage the growth of moss, algae, or lichen. While this can lend a charming, aged look to the setts, it can also make them slippery, posing a safety risk. If not promptly addressed, these green growths could lead to staining.
Understanding the potential effects of winter on granite setts and kerbs is an essential prerequisite for effective winter care. Freezing conditions, the use of deicers, physical stress, and biological growth are all winter-related factors that can impact the appearance and condition of your granite setts. While granite setts are renowned for their durability, being aware of these impacts can guide your preparation and maintenance efforts, ensuring your granite setts withstand winter’s trials and continue to enhance your landscape year-round.
Preparation: Pre-winter care for granite setts
Effective winter care for granite setts begins with thorough preparation before the onset of the cold season. Some preventative measures taken in the fall can help mitigate potential winter damage.
One of the first steps you can take is to give your granite setts a thorough cleaning. Remove any dirt, leaves, or other debris from the surface of the setts. This not only prevents stains but also reduces the chances of water retention, which could lead to freeze-thaw damage.
Next, it’s a good idea to inspect your granite setts for any existing damage. Look for signs of cracking, chipping, or loosening. Any damaged setts should be replaced before winter to prevent further deterioration.
Granite setts have the advantage of being naturally resistant to most stains. However, if your setts have been in place for quite some time, or if they are located in an area particularly susceptible to stains (for instance, near a barbecue spot or under trees that drop sap), you might want to consider applying a sealant. This can provide an additional layer of protection against potential stains from deicing salts and other winter-related materials.
Drainage is an important pre-winter consideration as well. Check your existing drainage systems to ensure they are functioning properly. If water tends to pool on or around your granite setts, consider regrading the area or installing additional drainage solutions to prevent standing water which can contribute to the freeze-thaw cycle.
Lastly, consider the surrounding landscape elements. Trim overhanging branches that could potentially drop large amounts of leaves or snow onto the setts. Similarly, if your granite setts border a lawn or flower bed, make sure to edge the area neatly to prevent encroachment of grass or plants onto the setts.
During winter: Maintenance tips for granite setts
Once winter sets in, some ongoing maintenance measures for your granite setts can help manage the challenges of the season and protect the durability and aesthetics of your landscaping.
Regular cleaning of the setts remains important. Promptly remove snow and ice to prevent freeze-thaw cycles. However, approach snow removal with care to avoid causing physical damage to the setts. A plastic shovel or a broom is often a safer choice than metal tools, which can scratch the granite.
If you use deicing salts or chemicals, apply them sparingly and if possible, look for products that are gentle on natural stone. More eco-friendly or stone-safe deicers can be a good investment to protect your granite setts.
Monitoring moisture levels is another essential winter maintenance strategy. While granite setts are highly durable, areas that remain wet for prolonged periods can become susceptible to issues such as moss or algae growth. Ensure the setts have a chance to dry out when weather conditions permit.
Also, be aware of the temperature. Rapid temperature fluctuations can stress the granite, exacerbating any small cracks or areas of damage. While there’s not much that can be done to control the weather, being aware of such conditions can help you prioritize checking and addressing any issues that arise.
Finally, regular inspections of the granite setts during the winter months will allow you to spot any new damage or emerging issues early and address them promptly. Look for signs of loosening, cracking, staining, or biological growth.