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1. LAYOUT (FOR ABOVE GRADE ONLY)
• Lay the course(s) of block below the desired flashing level until above grade. BLOK-FLASH is to be installed
ABOVE GRADE ONLY.

2. PLACEMENT
• OPTION A: Install the Blok-Flash course by spacing
units over the cores of each block.
• OPTION B: Install the Blok-Flash course evenly along the formed concrete foundation or slab.
• FOR BOTH OPTIONS A & B:
• Use the reference lip on bottom of the Blok-Flash
spout to position the pan against front of foundation or block. The drip edge on the weep spout will extend slightly.
• Make sure the connector bridges overlap the next
pan. This will divert water into adjoining Blok-Flash pans.

3. VERTICAL REBAR / GROUTED CELLS / CORNERS
• Where walls are reinforced, eliminate the Blok-Flash
pan at the grouted core and detach the connector
bridge from the adjoining pan by bending it back and forth a few times. Use same technique for corners.
• Cross bed webs adjacent to the grouted core making
sure to overlap the Blok-Flash flange. Use same
technique for corners.

4. MORTAR SPREADING
• Use standard mortar spreading techniques with mortar
lapped, first over the inner and second over the
outer flanges of the Blok-Flash pans. This will stabilize
the pans during installation and later help divert
moisture into the Blok-Flash pans.
• When mortaring a grouted cell, isolate the cell by applying a mortar dam.

5. DRAINAGE
• Install one 7" x 16" mesh Drainage Matte per core directly above the Blok-Flash course allowing moisture to drain to flashing pans and out the integrated weep spouts. Drainage Matte should be in contact with the pan to keep pan & weep spout clear of mortar droppings - this replaces pea gravel.

6. TOOLING
• Tool all head and bed joints and remove any obstruction from the weep spouts.

7. BUG GUARD
• Install the included Bug Guards by inserting one in each spout.
• Slide the end with the locking tabs in first.
• Use a screwdriver (or other available tool) to gently push Bug Guard in the weep spout until mesh is recessed approximately ¼" allowing the Bug Guard to "lock" in place. (Recessing the Bug Guard makes it difficult to remove by unauthorized persons.)

NOTE: For optiumum protection it is recommended that the concrete masonry wall should consist of an integral water repellent in the block and the mortar. For the best drainage possible use insulation consisting of one of the following: loose fill, core inserts or other insulation methods that will not obstruct the downward migration of moisture. Contact your nearest masonry supplier for information on this system.