Efflorescence Removal

We were called for efflorescence removal on a fairly new building in Denver.

It’s common for efflorescence to show up 3-9 months after construction and the rest of the information we received about the job matched the expectations for efflorescence, so we sent a crew with the assumption that they needed efflorescence removal.

Pressure Washing Calcium From Brick House 6 Pressure Washing Calcium From Brick House 6

Efflorescence removal and calcium removal can appear the same – but they take completely different procedures.

When our crew got to the job site, our team leader looked at the areas that needed to be cleaned and realized right away it wasn’t efflorescence removal.  It was obvious from the fact that he could rub the white powdery film loose from the brick with his finger.

Efflorescence is typically a white deposit of water-soluble salts left behind on the surface of brick after water evaporates.  The salts usually seep from the brick itself, but sometimes can be from the mortar, the water used to make the mortar or sometimes the dirt that is used to back-fill against brick in landscaping.  There is always moisture content in brick.  If the brick has a small flaw, the flaw allows moisture to travel to the surface of the brick.  As the moisture travels, it draws salt through the brick with it.  Once the moisture reaches the surface, it evaporates, leaving behind the salt that becomes the troublesome efflorescence.

We contacted the building manager and explained that he didn’t need efflorescence removal.

We told him we didn’t know for sure what the substance was, but a quick rinse would get it off.  Once the manager understood this, he said it must be from the new white rubber roof on the building.  Our team leader confirmed the pattern of white on the brick was darker near the top of the walls and seemed to come from certain points along the roof line.

If our team leader hadn’t taken a moment to check the details of the job before beginning his work, he would have started his normal process for chemical efflorescence removal and may not have realized how quick and simple a job it could be.  By taking the time to verify the details of the job, he saved our customer several hundred dollars and still gave them the clean building they wanted.

That’s why we’re a BBB Gold Star Award Winner – for 4 years in a row.  Guaranteed service since 1985.

 

 

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