Tag Archive for cleaning process

Cleaning Oil Stains

Cleaning Oil Stains (Petrol Station)

We got asked to high pressure clean the oil stains off the floor of a petrol station. The problem was that it was a very busy garage and we could only do the job after hours, so we worked through the night. The oils stains there have been there for years and its almost impossible to get them out with out using the right chemicals. Firstly we high pressure cleaned the cement surface to get as much dirt out as possible. Take a look at some of the photos of cleaning oil stains off the cement floor before we started cleaning.


Using a Degreaser – Cleaning Oil Stains

After the high pressure cleaning was done, we used a degreaser chemical for cleaning oil stains, which was scrubbed onto the surface and left for a while before we high pressure cleaned the surface a second time. The degreaser removed a small amount of the oil stains but not much. A much strong chemical is used for cleaning oil stains.

Hydrochloric Acid – Cleaning Oil Stains

Hydrochloric acid was then poured onto the areas with the oils stains. The problem with acid is that it not only eats the oil stains but eats the cement too. You could actually see the black oil stains running off the floor of the cement where the acid was applied. Our team of high pressure cleaners then scrubbed the hydrochloric acid into the cement for a few minutes, Protective gear is needed when using acid, you cant breath this stuff in, its horrible for the lungs. Once the surface was properly scrubbed, we bought the high pressure cleaner in to clean the acid off and high pressure clean the surface for the third time. Most of the oil stains where successfully removed from the cement area that needed to be high pressure cleaned for the owner of the petrol station.

Below are some of the photos of our team scrubbing the cement surface with the degreaser and with acid. You can see the surface is much cleaner than before we started the job.


Stains and Causes

Roof Stains

When you look at your roof have you ever noticed the black streaks the run down your roofing tiles and wondered how they got there and how they get stained in almost perfectly vertical columns? Have you ever seen a roof covered in moss and asked yourself the question, does the growth harm the roof at all? High pressure roof cleaning is the solution.

Roof stains come in different colours and sizes. Roof stains can be caused by rust, chimney soot, plant debris, extractive bleed through, and all kinds of fungi and algae. These discolorations are not only horrible to look at but can also be a sign of damaged roof material.

Rust stains and chimney soot

Rust and soot very often cause these brown and black roof stains around and below chimneys on your roof. If you don’t find many roof stains and rust on other areas of roofs then the chimney is normally the first suspect. When soot lands on your roof it washes down the slope of your roof and it leaves a discolored trail down to your gutters. The same thing happens with rust, which can come from antennas, satellite dishes metal and iron mounts. Rust stains should be investigated cause they are an indication that metal is leaking which will eventually cause major roof damage.

Extractive Bleed Stains

These are black streaks that run down your roof. Stains like these differ in length and width, but are definitely a clear indication of a roofing product that is defective. Excessive amounts of bitumen or some form of black pigment can cause these stains when released from the top of your roof and makes its way to your gutters. It can mean that the bitumen was not installed properly during production. Stains like this will often manifest over large areas of your roof. High pressure roof cleaning will help remove the stains from your roof. Dont do it yourself use a professional roof cleaning company.

Debris and Proximate Stains

Roof Stains like these are more than likely caused by a nearby tress, adjacent building or possibly a chimney. These stains are grey, brown or black and develop in limited areas of a roof. Normally when objects shade a rooftop, it can prevent the area of roof from drying properly and can potentially help the growth of fungi, algae, moss. Debris stains are usually caused by branches and leaves or any form of rubbish that stands still on the same spot of your roof and creates spots on your roof over time. Twigs and leaves releases organic acids that can cause discoloration. You need to get your roof cleaned to remove stains like these.

Moss, Fungi and Algae – Roof Stains

Fungi and Algae often appear as streaks or black spots on your roof. They look a bit like dark stains or shadows on your roof. Moss is more of a greenish colour and don’t look like stains but more of a growth. Moss will appear anyway there is humidity and some sunlight. High pressure cleaning is needed to remove moss and algae growths. A professional high pressure roof cleaning is needed to remove moss from your roof.

Algae and Fungi

Algae and Fungi Cleaning Process

High pressure cleaning is the process of removing roof stains including algae and fungi from roofing materials, in places where humidity is high and prevalent. High pressure cleaning is performed using the soft-wash system.

The black stains hold a number of different algae and fungi, which need a warm, humid environment to thrive. Algae and fungi begin their life as airborne spore, and they settle on roofs. The spore that lands on the northern exposure of a roof has a better chance of survival, because after morning dew or rain, that is the last part of the roof to dry. This increases humidity on the surface of the roof and making it a prefect breeding and feeding ground for algae and fungi.

If the algae and fungi on your roof is not high pressure cleaned every once in a while, the algae and fungi will spread causing more of an issue over time and cause the roof material to degrade.

Gutters are one of the most challenging parts of a house to maintain. They’re difficult to get to, frequently block up, and require constant supervision.

If you’re desperate to have your gutters cleaned out and returned to their original working condition, look no further than using us to do it for you.