County Materials Corporation - Midwest manufacturer and supplier of standard and architectural concrete masonry units, concrete and clay brick, thin veneers, real and manufactured stone veneers, retaining wall block, interlocking pavers, ready-mix, concrete pipe and precast products, hollowcore, bridge girders and related concrete construction and landscaping products

Blok-FLASH® by Mortar Net®

CONCRETE MASONRY

Blasted

Concrete Brick

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Blok-Flash® by Mortar Net®

blok flash
Blok-Flash installation of
first course

mortar application to blok-flash
Mortar application first over inner flanges of Blok-Flash, then over outer flanges

A Unique Embeddable Flashing System

Blok-FLASH® is an embeddable flashing device for exterior single-wythe C.M.U. wall systems. It collects moisture that infiltrates the wall and flows down the vertical cores and diverts it to the exterior.

Blok-FLASH is useful at all flashing/weep hole locations including base wall, above door and window openings, above bond beams, in parapet walls, basements and any other locations where flashing is necessary.

Highlights

Useful in all 8", 10", and 12" exterior block wall applications
Maintains greater bond than through-wall membrane flashing
Eliminates the need for using multiple sizes of architectural C.M.U., thus reducing costs
Simple installation in reinforced wall systems
Reduces thermal break, helping to maintain the walls R-value insulation integrity
Saves more than half of the labor an material costs associated with using membrane flashing in a multiple-wythe course
45-degree drip edge to deflect moisture away from the wall system
Concaved weep spout for ease of tooling
Eliminates unsightly head joint weeping devices
Light weight and compact shape for convenient shipping, handling and storage

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PRODUCT SPECIFICATIONS

Blok-FLASH® is a high-density polyetheylene composition molded in to a .0625" thick (1.59 mm) flashing pan with .3125" (7.94 mm) perimeter flanges.

The .0625 inch (1.59 mm) concave weep spout with a .20" (5.08 mm) x .64" (16.26 mm) opening and a 45-degree drip edge extends 1.0" (25.4 mm) from the outer flange. The inner and outer flanges are spaced to allow for 1.0" of mortar bond between the upper and lower course of C.M.U. in 8", 10" or 12" wall systems.

The weep spout ceiling extends 3.5" (88.9 mm) from the outer flange into the center of the pan and acts to suspend mortar, keeping the weep channel clear.

Blok-FLASH® is impervious to water and includes chemical stabilizers to protect against UV degradation.

STANDARD SIZES

	Model US-8	Model US-10	Model US-12
C.M.U. Type	8" (7-5/8")	10" (9-5/8")	12" (11-5/8")
Height	.3125" (7.94 mm)	.3125" (7.94 mm)	.3125" (7.94 mm)
Width	5.625" (142.88 mm)	7.625" (193.68 mm)	9.625" (244.48 mm)
Length	6.75" (171.45 mm)	6.75" (171.45 mm)	6.75" (171.45 mm)