Stopping Unsightly Fungal Growth

Most tilers can probably recall seeing where a silicone sealant joint has become soiled with a fungus infestation.

Many field-applied silicone sealant joints have additives included in the material to prevent such problems, and may keep the problem at bay for some time, but even with these additives, fungal growth on and within the silicone sealant always seems to get a hold eventually.

Not only is it unpleasant to look at, it may cause problems in areas with strict hygiene requirements, such as hospitals and food preparation areas - particularly industrial kitchens - along with washrooms and shower rooms etc.




A simple and effective solution is to install a pre-fabricated profile at the internal wall-to-floor junction. The requirements of each individual application will dictate which material is used. For example, Figure 2 shows a stainless-steel cove-shaped profile which provides an easily-cleaned corner, where limited movement is expected. Aluminium and PVC are also commonly used, depending on the degree of movement the joint has to protect against, and what chemicals it may come into contact with.

So either metal or PVC pre-fabricated joints are going to be of benefit at tiled floor-to-wall transitions.

The use of pre-fabricated coved profiles has an added benefit in that "sit-on" or "sit-in" skirting tiles are not required. A skirting tile is probably the best looking solution; however these are expensive, and a movement joint still needs to be incorporated. The coved profiles give both an attractive coved shape and movement joint protection all in one.

Other benefits include being very economical due to their long life, there can be no tears or cracks in the movement joint, and, with PVC profiles:
· The chemical structure makes them resistant to ageing, and the materials cannot rot
· They are unaffected by oxygen or ozone
· Resistant to the majority of diluted and concentrated acids, lyes and hydrous salts
· Resistant to fungi and bacteria
· Difficult to ignite, and self-extinguishing in the event of fire.

And with metal profiles:
· Choosing the correct material type guarantees protection against anticipated chemical or mechanical stress
· Resistant to fungi and bacteria
· No special maintenance required.



   
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