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Why Does Render Need Maintaining? - Render Maintenance

The unenviable task to maintain the building’s exterior falls to property managers, so when it comes to cleaning render stains, it can become an expensive and time-consuming task. However, maintaining the render is just as important as keeping interiors looking spick and span. In our latest blog, the Spectrum team outline some key tips and render stains to watch out for. 

3 reasons why your render needs maintaining:

1. Breathability

Exterior walls can take a battering from the great British weather, so allowing moisture to escape is important to prevent condensation and dampness from setting in. Rendering can help achieve this, as the lime in the mixture allows the walls to breathe, stopping mould growth and rot setting into the brickwork. 

2. Property Regulations

Rendering the external walls will also improve its fire-resistance properties. This means, if a fire did break out, the rendering will prevent the flames from spreading quickly, providing time for the emergency services to arrive and contain the fire.  

3. Reputation

The outside of a commercial property sets the tone for employees arriving. It is a statement of intent to visitors. It comes to symbolise the organisation's culture. Rendering the exterior walls can remove discolouration from natural sources (or graffiti) while applying a decorative finish will deliver a much-needed face-lift in one fell swoop. 

How do render stains occur?

Over time, it is inevitable a property’s exterior will begin to show signs of wear and tear. Depending upon the location of the building, factors ranging from carbon emissions, proximity to woodland areas, lack of sunlight, and vandalism, can lead to the render staining. 

If you’ve recently noticed some discolouration on the rendering, then our helpful guide below will advise on what the cause is likely to be. 

What are those render stains?

Algae render stains

A green, organic-like stain, on the building’s exterior is likely to be an algae growth. Algae growth occurs in damp conditions, such as areas that receive a lack of sunlight, or where a leak within the gutters and downpipes are situated. Algae will continue to spread if it’s left untreated, becoming harder to remove, as well as an eyesore to the building’s aesthetic. 

Carbon render stains

Carbon emissions from passing traffic, or from nearby industrial plants, can lead to black carbon stains appearing on the render. Buildings located in city centres are especially susceptible to these black carbon stains, which make the exterior feel dirty and dated. A swift treatment however will bring a shine to the building in comparison to its neighbours. 

Rust render stains

Red rust-like stains appear on commercial buildings when the particles in rainwater and metal combine over time. These rust stains are a particularly unedifying sight that requires treatment to ensure there isn’t any lasting damage. 

Pollution render stains

Dull, grey, or black oily render stains at a ground floor level are likely to be caused by passing vehicles. The build-up of pollution, especially if the building is located on a busy road, will lead to discolouration forming on the render. 

Paint render stains

Graffiti vandalism is the scourge of property managers up and down the country. However, paint stains can also be caused by external building works, such as tar stains during a roof replacement. Immediately treating the paint stains on the rendering is important to avoid damaging the brickwork, as well as your company’s reputation of course. 

How to maintain render

Maintaining the render on your building’s exterior requires property managers to carefully understand the different types of treatment available in relation to the property. The wrong chemicals or render cleaning method can lead to damage. 

For example, render softwashing is a cost-effective way of removing algae stains. The deep clean, high temperature, low-pressure steam treatment delivers a powerful force to penetrate the organic build-up, washing any lingering bacteria away from the property’s exterior. 

Low-pressure render cleaning is a longer process, and it’s certainly not as effective on stubborn stains like algae, but it’s also kinder on the render itself. This treatment is popular for city centre buildings where typical stains require less intensive pressure to clean. 

Here at Spectrum we would recommend an annual render cleaning service using our P.A.S.T. patented process. Our equipment and method is the most effective way to maintain render. This will remove any render stains, keeping the building’s exterior looking fresh and clean while preventing the accumulation of dirt and stains which, if left untreated, can cause more intensive treatment to be required at a later date.

Contact us today to find out more about our render cleaning service.

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