If you have an old Masonry surface such as brick, concrete, or stone that appears both or black I will share with you the way you can clean up them. So I will discuss all of them, there are various procedures for each surface type. You have to gather. You are likely to want a empty 5 gallon pail, stainless steel insect sprayer, access to water using a hose, muriatic acid or another masonry cleaner, a scrub brush, steel wire brush, protective equipment waterproof gear, gloves, coat, hood, trousers, boots and above all eye protection, acid does not feel good in your own eyes. Lastly you will require a fantastic gas powered pressure washer you can buy one for about 300.00 or rent one for a day.
Brick and stone Walls may be handles a couple of approaches that you can use a cleaner such as clean or a pressure washer or both or acid. If you decide to use a cleaner wet the surface. Next apply cleaner with a plastic bristle brush or use the bug sprayer to use it. Make certain to dilute the cleaner with water to make it safer to use, follow the instructions on the cleaner you are currently using. Try not to breathe in the fumes from the cleaner it may make you vomit and dizzy. In area that is dirty use a steel wire brush fairly over the region or you might need to scrub hard. It should bubble up on area away if you are using acid but it does not work on moss. After you have scrubbed down the wall hose it off or I advise using a pressure washer to wash off it. A pressure washer is capable of cleaning the majority of the surfaces if done correctly, but do not get too close with the tip if they are aged.
If you are cleaning as what you did the stone and brick wall, concrete it could be done the same manner. You must be consistent with your pressure washer. Otherwise you will see where and where you have got clean you have giving your concrete an appearance. If you have an old there is. For this project you will need another piece of sandstone that is about the same hardness or a stone. You will be satisfied with the results when you are done although this does require some breaking work. Take your rubbing rock a rub it all over the surface until you get keeping surfaces clean for less a wonderful sandy grit throughout the surface, in dirtier area you might need to scrub a bit harder. Once complete sweep the surface or wash it off. Do not use a pressure washer or acid they are easily damaged. If you are unsure of to complete this task you should employ pressure washing contractor or a mason to look after this for you. Dealing with pressure and acidity washers can be harmful to both you and the people.