The Pitfalls of Using Cement for Pointing

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The Pitfalls of Using Cement for Pointing in Traditional Structures

In traditional buildings, the use of appropriate materials for restoration and repairs is crucial. A common practice that has been widely criticised is the use of cement for pointing. This approach can lead to a host of problems, undermining the structural integrity and historical value of these buildings. This blog delves into why cement should not be used for pointing in traditional structures and highlights how products like Cocoon's InvisiTherm® can complement the maintenance of such buildings.


Understanding Traditional Buildings


Traditional structures are known for their breathable construction, allowing for the natural movement of moisture through their fabric. This characteristic is largely due to the use of lime mortar in their construction, which facilitates the absorption and release of moisture, thereby preventing the accumulation of damp within the building's walls. Cement, in contrast, is much less permeable, trapping moisture and leading to issues such as damp, frost damage, and decay of the building fabric.


Why Cement Is a Poor Choice


Cement's impermeability is a major issue in traditional buildings. It traps moisture, leading to dampness and deterioration of surrounding brick or stone. Moreover, cement's rigidity compared to the more flexible lime mortar means it can crack due to the building's natural movements, further allowing moisture ingress and leading to structural damage.


InvisiTherm® and Traditional Building Maintenance


Innovations like InvisiTherm® offer modern solutions that respect the unique needs of traditional buildings. InvisiTherm® is a secondary glazing system designed to improve a building's thermal efficiency without compromising its breathability. Its ability to allow water vapour to pass through supports the natural moisture regulation of traditional buildings when used alongside appropriate materials like lime mortar, enhancing both the structure's longevity and interior comfort.


Repointing Best Practices


Repointing traditional buildings demands adherence to best practices that respect their historical construction methods. This includes using a lime mortar mix that matches the original, adequately preparing surfaces, correctly applying and curing the lime mortar, and adjusting the mix to the building's exposure to the elements. These steps ensure that repointing enhances the building's durability without sacrificing its historical integrity or moisture-regulating capabilities. For more advice on on the challenges presented, the Scottish Lime Centre Trust share many in depth articles on this topic.


Conclusion


The material choice for repointing traditional buildings significantly impacts their preservation and durability. Cement, with its impermeability and rigidity, is ill-suited for such applications. Lime mortar, known for its flexibility and breathability, is the recommended choice, working in harmony with the building's original materials to ensure moisture is appropriately managed. Modern advancements like InvisiTherm® further aid in the sympathetic maintenance of these structures, offering energy efficiency improvements while respecting their need for breathability

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Last week we looked at some common misconceptions about the energy price cap that could potentially cost you money, and since last week saw Blue Monday (apparently the most depressing day of the year, in part caused by unpaid bills surfacing after the festive period) it’s worth looking at the general energy myths that cost us all hundreds of pounds of year. The thing about myths, luckily, is that they’re not real, so check out these seven energy myths that are costing you money, and start looking at a more prosperous and energy efficient 2019. Myth 1: Turning your thermostat up higher will heat your home more quickly We’ve all been guilty of it, especially when feeling the chill: cranking the thermostat up by a few extra degrees to heat up our homes ore quickly. But according to Energy Saving Trust expert Caitlin Bent, speaking in This is Money , this wont make a difference. 'Turning up your thermostat won’t heat your home any faster, it’ll heat at the same rate, but unless you remember to turn it down again will keep heating to a higher temperature, wasting energy.' In fact, the quickest way to warm your home up is to ensure that it is properly insulated and draught proofed: not only will this bring your home up to temperature more quickly, it will also better trap the heat so that it stays that way for longer too. Myth 2: Turning my heating up slightly wont make a difference to my bill Similarly to cranking the temperature to heat your home more quickly, there is something of a common myth that raising the temperature of your heating only a wee bit will not make any real difference to your energy bills. But according to N Power this is very much incorrect, because turning your thermostat down by just one degree can save around £75 per year on your energy bills. This is backed up by the Energy Saving Trust who say that turning a room thermostat down by just one degree can not only save £75 per year but also saves 340kg of carbon per year! Myth 3: It’s cheaper to leave your heating on low all day rather than turning it on and off Many heating engineers recommend leaving heating on low all day can be a more efficient way of running your heating, but this is only really true for properties that experience severe condensation. If your property does not suffer from condensation issues, then leaving your heating on low all day effectively just wastes energy. According to Martin Lewis, speaking in The Mirror, “Just pay to pump energy in as and when it is needed. To keep pumping it in constantly isn’t efficient. Using a timer is best, because your thermostat is designed to turn your heating on and off to keep your home at the temperature you set it. 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According to Choose Energy “the longer your heating or cooling system is turned off, the greater your savings will be . “Adjusting your thermostat 10 to 15 degrees for 8 hours a day can save you 5 to 15 percent per year on heating and cooling costs – 1 percent for each degree it’s set back.” Myth 6: I need to get boiler cover with my energy supplier Many people think that they are locked into obtaining boiler cover from their energy supplier, a misconception that can cost you hundreds of pounds per year. Energy firms use our fear of being left without a working boiler to charge well over the odds for boiler cover, but just like home insurance, energy supplier or your broadband, you can easily use a price comparison site to switch and save money. Writing in The Mirror, Martin Lewis states “[Energy Firms] want us to think there’s some link between our energy provider and our boiler cover. 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