can bay trees cause subsidence

While the tree is growing the surrounding soil is died out butr when the tree is removed the moisture content builds up, causing the ground to swell. Bigger trees that cause subsidence specifically take liquid from the soil, causing the soil, and thus the ground beneath the house, to shrink. In urban areas willow tree roots have been known to invade drains and pipework. If you remove this tree then that is 400 gallons pf water per day that is no longer being taken from the ground and the ground may become water logged. Older properties may have shallower, less sturdy foundations - however, depending on their building material, they may also be more flexible and less likely to subside. Clay is approximately 1/3 water and can dry out by trees and shrubs drinking the clay dry, a problem which is intensified during long hot summers. Subsidence Cause. Trees and subsidence Risk assessment & management. Other causes of movement, such as subsidence due to overloaded foundations, or severe changes in sub-soil moisture levels, will often require more extensive repair. Clay is approximately 1/3 water and can dry out by trees and shrubs drinking the clay dry, a problem which is intensified during long hot summers. Swelling pressures can cause heave, or lifting of structures, whilst shrinkage can cause settlement or subsidence, which may be differential. Required fields are marked *, You may use these HTML tags and attributes:

. Old homes may have shallower foundations – although if they’re built of bricks and soft lime mortar, they might also be more flexible, and less likely to be badly damaged by any movement. Heat waves in 2003 and 2006 led to peaks in subsidence claims. Subsidence may also cause doors and windows to stick as the building’s structure becomes distorted. Of course, you are more than welcome to call us and we can provide your cover over the phone, All Insurances This can cause the soil / clay in the area to absorb the water, swelling it and causing heave (the upwards movement of the ground and the opposite of subsidence). Over 60% of all subsidence claims are triggered by trees. Some species absorb a lot more water, making the soil much drier. Not all circumstances in which a tree grows close to a house will give rise to subsidence. Most of us love trees but they have their place – and their place is not too close to buildings where they can cause extensive damage. When the ground dries out, it is increasingly prone to movement and shrinkage. Thinking of buying a house with a large tree in the garden? It may also be caused by trees and shrubs which can absorb significant volumes of water from the soil. Subsidence . The Judge in this case agreed with the Defendant that the general risk of tree root subsidence is not sufficient to make all damage reasonably foreseeable, otherwise every claim due to subsidence would succeed. this offers protection against unexpected events such as the failure of your main heating system, blockage of drains or failure of your domestic gas or electricity supply. For most people, this involves having good quality door and window locks. Many trees self seed quite extensively and you may not even notice a sapling growing close to the house. If it has been determined that a tree is causing damage to the foundations of a property due to shrinkage of clay subsoil beneath the foundations there are several options to take including topping, removal, thinning, pollarding. The oak tree is responsible for the largest number of subsidence claims in the UK. Trees and shrubs can damage the foundations of the property causing subsidence. Causes Of Subsidence. Not such a happy scenario. " The bay tree has a shallow root system" Hmmm, plants/trees require as much root to take up water and nutrients as they have branches/stem to deliver to so, even if the root system is shallow the roots will therefore have spread some 16 or 17 feet from the trunk. The tree roots will not normally damage the foundations of a house directly but they can increase the likelihood of subsidence when they are combined with a clay soil, which shrinks and swells as moisture content decreases and increases. Recent newspaper reports have highlighted that 2017 could experience a serious drought caused by a hot dry summer and the driest winter in 20 years. A mature willow tree, for example, can drink up to 400 gallons of water per day in growing season. Worse still – a tree’s search for water can suck moisture from the ground leaving clay soils shrinking. Willow trees like damp conditions and a large mature tree is thought to extract around 1000 liters of water a day from its surrounding soil. Where tree roots cause damage to a neighbouring property, the owner of the tree can be liable, under the law of nuisance, for such damage. The main causes are: - Source Number. It's not quite such a problem on other types of soil as far as I'm aware. One of the most common causes of subsidence damage to property is from clay shrinkage. This can lead to loss of support to inadequate foundations and subsequent subsidence. Causes Dissolution of limestone. But if you are thinking of buying a house built pre 1950, and it is in an area of clay soils, you should assess any nearby tree for whether its roots may potentially reach the soil around your house foundations. Essentially, it is impossible to rule out trees as a cause of subsidence, it actually depends on the soil type. These area include the roof timbers, joists, staircase and floorboards. The tree roots, in their search for water, will increase the drying out of the soil in the surrounding area, and increase the likelihood of the foundations moving and causing subsidence. We are open 7 days a week to assist you with your enquiries. You can find more information about how we look at subsidence cases below. 1. Homeowners have been advised to take greater care over planting trees or risk potential subsidence problems. If they can establish that the trees are implicated in subsidence then you have to act however since they have identified leaking drains, which indicates an excess of water as the cause of the current claim it’s difficult to see how vegetation can be implicated where vegetation related subsidence involves desiccation of the soil. A mature deciduous tree can drink around 50,000 litres of water a year. If the subsidence is caused by a tree, this can often be remedied by cutting it back so less water is extracted from the soil. In these cases taking out the trees would possibly do more harm than good. Any large tree with vigorous growth has the potential to cause subsidence damage if it is close enough to a house. One of the most common causes of subsidence damage to property is from clay shrinkage. Tree root spread data have most relevance to relatively ‘safe’ planting distances when relating to trees growing on shrinkable clay soils. More than one in 10 have planted trees close to their house, according to a survey by insurance firm Zurich. We were next door to a council owned park, and their trees caused the problem. Monthly payments available. Are there any trees that are suitable to grow near a house? Subsidence is more common in clay soils which swell and shrink according to the level of moisture. All our policies cover Home Emergency as standard up to £500. Trees and shrubs can also be a factor, particularly if they’re close to your foundations. Poplar trees particularly the large columnar variety are very popular across Europe, they grow very fast and can look hugely impressive swaying in the wind. 27 posts 1; 2; Next; manataka Posts: 12 Joined: Wed Dec 23, 2009 4:30 pm Location: Sussex. If left untreated it can huge amounts of damage to the interior of your home. If you suspect that trees or shrubs are causing damage to your property then you need to take action as soon as possible. Trees can also be an indirect cause of subsidence where moisture-seeking roots invade underground drains causing them to leak. What are the four worst trees for causing subsidence? Continued drought, even in the absence of trees, can lead to subsidence in such circumstances. While it is a sapling it won't cause a problem, but some trees can grow very quickly. Colin and Julian each have a history of over 20 years experience in insurance broking, bringing insurance products to market and handling clients business day to day.Having already established a good reputation within the insurance industry and legal sector, they started Bickers Insurance to concentrate on the... Our contact details are as follows;- . These should be studied most carefully as without the correct protection being in force, you may find your cover compromised in the event of a claim. Houses built since the 1950's generally have deeper foundations to avoid the problems due to drying out of the soil. A qualified arborist will advise you or your insurers as to the best method of handling a tree in your own situation. Soils with high clay content are more likely to be affected as trees suck out moisture, shrinking the soil, and causing movement and cracking in walls. Trees, by their very nature can be very large, very heavy and can drink a lot of water from the soil surrounding them. I have an old fig tree in the corner of my walled garden, on my side of the flint wall which has been planted in a raised bed. Your email address will not be published. Biggest culprits are Willows. Subsidence frequently causes major problems in karst terrains, where dissolution of limestone by fluid flow in the subsurface creates voids (i.e., caves).If the roof of a void becomes too weak, it can collapse and the overlying rock and earth will fall into the space, causing subsidence at the surface. Roots extract so much water that they can cause clay soil that around 70 of. 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