Q:	My brick is very dirty - can it be cleaned?
A:	Atmospheric dirt, carbon, mold and algae can all be removed through chemical cleaning or powerwashing. The color, texture and type of brick can all affect the degree of how clean the brick can get.
Q:	Should my brick be cleaned before or after tuckpointing?
A:	Chemical cleaning should always be performed before tuckpointing for two reasons. The first being that the force of the pressure washer will actually help loosen and remove defective mortar thus preparing the joint for a new application. If you clean the brick after tuckpointing you run the risk of blowing out the new mortar if appropriate curing time is not allowed.
Q:	What is the difference between sandblasting and chemical cleaning?
A:	Chemical cleaning, just as the name implies, uses chemicals and pressurized water to effectively clean brick and stone. The chemicals are not as abrasive as sand so they will not harm or etch the masonry surface. Sandblasting on the other hand cleans the brick with pressurized sand follicles. This method will definitely score the substrate of your brick and sometimes damage it beyond repair. Another drawback to this technique is that the sand is not contained so it is an extremely messy process. For these reasons ARROW does not perform sandblasting services.
Q:	Are the chemicals you use safe?
A:	Any chemical is going to be caustic in one respect or another. They are not harmful to humans or the environment otherwise we would not be able to utilize them. The chemicals are always diluted and special precaution is taken around windows, doors and vegetation to protect from overspray. To further insure safety, ARROW does not perform the cleaning process on windy days.