What Causes a Roof to Leak?
A leak in your roofing can be at worst annoying and at best stressful – if only for the fact that leaks can be hard to pin point. There is also the worry of the potential damage a leaking roof can cause, which is why it is so important to deal with Roof repair Leicester quickly.
Different weather conditions dish out severe punishment to roofing. Think about it – your roof has to withstand, at various times, heat from the sun, rain, wind, ice and severe temperature fluctuations. Your roof will, during its lifetime, expand and contract many times as it reacts to the onslaught from the elements.
Non-stop exposure to the weather will cause waterproofing materials such as tars, coatings and membranes to lose their water repelling properties. Wind will, over time, loosen tiles and enable water to seep in under them and get into the loft area.
Ice can be a key cause of roofing leaks. During cold spells it can gather in the roof eves and cause an ice dam; this blocks the flow of water from your roof causing it to collect and – eventually – overflow into the house. A prolonged dripping caused by ice slowly melting from the heat emitted through the roof loft area can be the un-welcome result.
Over time, leaves and other debris can collect in your roofing gutters and clog them up. This can eventually inhibit the free flow of water away from your roof, and if water levels rise drastically some may find its way under your roof. This can be worse in colder conditions when the water in the roof gutters freezes – it can cause an ice dam causing water to rise up and over the obstruction (the ice) and potentially enter the home via the roof.
Faults in Roof Flashing
Roof flashing is the last line of defence against water leaks in roofing, and is often the most likely cause of a roof leak. Flashing is basically a sheet or strip of (usually) metal designed to protect a roof at its most vulnerable points. Roof flashing will be found around vents, around chimneys and other items that ‘interrupt’ a roofing installation. It may be that the flashing was simply poorly installed. It needs to be done properly as it has to be weatherproof, durable and – crucially – withstand the constant expansion and contraction roofing undergoes in response to climactic