Why does my render looks bad?
If you are asking yourself that same question, you are not alone!
Many people buy Rendered homes in Gloucestershire, they look great once built, only find out a few years later when Algae starts to grow on the render making the building look unsightly
If your thinking about re-painting, Let me stop you their, Painting render is one of the worst things you can do to a rendered building, K-Rend and other renders are porous and are designed to breath, so potentially your trapping the moisture in!
by painting you will have potentially stopped the house being able to breath trapping the algae under the paint which will ultimately over time keep growing. Its got to grow somewhere right?
That’s right, its going to blow the paint work and potentially the render, causing expensive damage.
Lets firstly look at how the render has got in that state in the first place.
Here is the general rule of thumb on why you have Microorganisms growing on your render.
For hundreds if not thousands of years mould, algae and spores have been growing in many different areas way before you an I were born! a the world teeming with different organisms on stones and vertical cliffs,
Modern buildings and houses have given new opportunities for some organisms to expand by using buildings as habitats.
contamination on Render is only of aesthetical character however some biological growth on buildings is highly unwanted because it can be harmful or degrade the building itself.
moisture is the single most important factor for biological growth on render
there are 4 main culprits which are growing on your render
Algae, sometimes called terrestrial algae, can live in terrestrial environments as, for instance, on tree trunks or on rendered buildings
If the right moisture conditions are available. The render can achieve a black-coloured mould Cladosporium which is a common saprotroph organism, therefore also often found in the air.
Another common air-borne mould that can be found on renderd buildings is Alternaria is a genus of ascomycete fungi. Both these moulds are black because of the pigment melanin that protects them against strong UV-radiation
Lichens are composite organisms, a symbiotic association of fungi (the mycobiont) and algae or cyanobacteria (the photobiont) Lichens are by now described by the mycobiont and are therefore a part of the fungal kingdom, but were in long time thought of as plants, just as fungi were.
Mosses belong to the kingdom of plants which have many characteristics in common with green algae. mosses are placed in a division of spore-bearing plants (Bryophyta). Mosses are photoautotrophic organisms, using light as energy source by photosynthesis
how do you stop this growing on your rendered house?
Slight problem you can’t it’s one of those things you have to manage and maintain, moisture is always going to be around in this country, we have the good old English weather to thank for that!
However you can kill what is already their by getting it cleaned and treated on a regular basis or every few years. It will be more cost effective than getting the render painted, Also will maintain the look of your building for a longer period of time without causing damage to your render.
Using a bleach based solution killing the Microorganisms at route bacteria, molds, fungi, protozoa and algae, among others. Bleach kills illness-causing microorganisms by attacking the proteins that make up the bacteria, algae, etc. This causes the proteins to unfold and break apart which leads to the death of the microorganism.
For your FREE soft wash render cleaning demo with proven results to see how great your home can look
Call one of our friendly team on: 01452 301 342
Or email: firstname.lastname@example.org
or to read a in a more depth study done in sweden all about algea & moss growth on render:
Linked here: (http://portal.research.lu.se/portal/files/4086826/1963564.pdf)Citation for published version (APA): Johansson, S. (2011). Biological growth on rendered façades Lund University, Division of Building Materials