Masonry Magazine May 2008 Page. 21
Getting all wet
Regardless of which machine and chemicals you choose to use, you're going to need water, and lots of it. From pre-wetting to rinsing, clean water is essential, whether for new construction, building maintenance or restoration cleaning. Along with water, specialized cleaners take contaminants off masonry, leaving the brick "as pristine and beautiful as when the client came in to select the brick in the showroom," says Henry.
Applying potent chemicals has to be done with a high amount of care and attention during new construction clean down, beginning with applying a great deal of water to the brick, typically with a pressure washer. By pre-soaking the masonry, the microscopic pores of the bricks become filled with water, which will later keep the chemicals on the surface of the bricks, guarding against penetration.
If the chemicals penetrate the brick and aren't flushed out fully, it can be harmful to the appearance later when the building dries, as a white residue will be left behind on
Left A technican flushes spent cleaner and dissolved contaminants from an architectural block wall. Using low pre-wet-and-rinse pressure (less than 1,000 psi) and high gallons per minute (6-8), is one of the secrets to a great new construction clean dows.
Pre-Formed Flashing
No job site cutting, bending or forming saves time and money.
* Corners, drip edge, end dams and mechanically keyed flashing offer the perfect fit without the extra work.
* Aesthetically appealing, durable and simple to use. The beautiful way to maintain a watertight environment.
Control & Expansion Joints
Control expansion, contraction and cost with durable, long-lasting joint products from Sandell.
* Efficiently seals joints and allows expansion or contraction of concrete or masonry.
* Easy-to-install backer rod, cork, rebonded rubber, neoprene, polyethylene foam and PVC or rubber control joint.
Air-Tight™ System
Seal the deal on long-term reliability and code compliance.
* Air-Tight Self-Adhesive Membrane wraps the structure to create an effective barrier against air, moisture, pollutants and other suspended particulates.
* Air-Tight Liquid seals the exterior surface against water in a variety of applications including wood, metal, concrete and sheeting. Applies with brush, squeegee or spray. Dries in 15 minutes, cures within 24 hours.
SANDELL
CONSTRUCTION SOLUTIONS
System Reliability Built In
CIRCLE 315 ON READER SERVICE CARD