Installation Guide
To determine the square footage of your project, simply multiply the length times the width. For example, if you are placing Old
Mill System on a wall that is eight-feet tall and ten-feet wide, the total square footage is 80 feet (8’ x 10’=80’). When you are taking
your measurements, remember to subtract areas that will not be covered by Old Mills System (Windows, Doors, Fireplaces etc.) from
the total square footage.
Note: Add 15% for waste.
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Corners are sold by the lineal foot, which means you must calculate the total running feet of your project. Again, accurately calculating
this number is easy. For example, if you have an outside corner that measures twelve feet from the starting point to ending point, you
will need twelve lineal feet of brick corners. Panel that is ending within a wall will need corners or panel that is ending were the end of
the panel is showing it will also need corners.
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Safety glasses, 4 foot level, or laser level, chalk line, 5 gallon bucket with quart measurements, ½” mixing drill, 3/8” screw gun,
mixing paddle, tape measure, mortar scoop, joint tooler (5/8” to ¾”), mortar bag, utility knife, ladder, scaffolding or a lift, electric
brick or tile saw, cleaning brush and a mortar brush. e substrate should be a sound wall and free from any loose material.
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If you are installing Old Mill Brick panel system over plywood substrate, you must first apply a starter flashing ensuring it is level
before the vapor barrier. To attach the vapor barrier start at the bottom of the area to be covered and run the paper horizontally,
ensuring that you overlap sheets by at least 4 inches. Use a small hand stapler to firmly tack the paper.
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ere are really only three things that you will need to do: 1) Determine square footage 2) Determine lineal footage for corners
3) Determine what type of substrate. (masonary, plywood, sheetrock, etc.)
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EXTERIOR (7A): Attach foam panel to sheathing with Old Mill washer using screws at least 1” into the main structures framing.
ese fasteners should be installed every 16” horizontally and 8” vertically. Care must be taken to assure that the fastener is firmly
seated on the brick spacer and fastened so that the outer surface of the fastener is flush with the outer surface of the panel. Vertical
control joints are required to be placed in walls at 16’ increments. ese joints should be constructed as follows: Panels should be cut
at the point at which the joint will be placed. e joint width should be 3/8”. Place a backer rod into this area and fill area with
sealant. Horizontal control joints should be placed at every floor level. is is to allow for the settling and shrinkage of the structure.
On all structures over two stories through wall flashing should be installed at all horizontal control joints.
INTERIOR (7B): Old Mill panel can be attached mechanically in the same manner as specified in exterior installation or attached
with Old Mill Adhesive. To attach with Old Mill Adhesive spread the adhesive over the entire back surface using a ½” notch trawl.
Place the prepared panel on the wall in the designated site and press firmly over the entire surface. Level each panel with a 4 foot level.
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Apply a 3/8” bead of Old Mill adhesive horizontally at the upper portion of the brick track using cement bag. Do not allow adhesive
to set more than 10 minutes before brick application. Run a single course of brick horizontally along the top brick track of the panel.
If this area includes an outside corner, begin with a corner brick there and move inward. To install a brick, place the bottom edge of
the brick against the upper edge of the brick spacer. (See step 9 picture) Press the brick into place by applying pressure up and in on
the brick. Make certain to maintain the proper spacing between bricks. Head joint size is ideally 3/8” in width, may vary between
1/4” and 5/8” so as to avoid using cut brick less than 3” length. After the initial course is in place and properly spaced, make a plumb
line down the wall in line with the edge of every fourth brick. is will be a reference for every other course of brick. For the courses
without a line, the bricks should be centered on the head joints directly above and below them. Successive rows of brick can now be
applied. As walls are often not perfectly plumb, head joints may need to be varied in order to adjust for such differences. Soldier or
rowlock courses can be used, as either decorative details or to avoid using small brick slices above or below wall openings. To achieve
this vertical application of brick, peel off the necessary number of brick spacers. (2 for soldier course, 1 for rowlock) Apply 3/8” beads
of adhesive horizontally, two inches apart, to the panel and then apply bricks.
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oroughly mix Old Mill type S grout with water according to mixing instructions on the bag, to a smooth consistency to facilitate
application with grout bag or grout pump. Allow a 5 minute set time and remix. 9A) Apply grout mix over filling joints. Avoid gaps.
9B) Tool brick joints when grout has attained a firm, pliable consistency with a minimum 5/8” diameter round jointer. Depth of
grout joint shall not exceed 1/8” below face of brick.
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When grout becomes stiff, brush the grout joint with a stiff bristle brush using diagonal strokes. is removes excess grout from brick
faces and joints. Now, stand back and admire a job well done.
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e bottom row of panel must be cut so a full brick course is at the base. Line up the first panel in a bottom corner and work
horizontally leveling each panel with a 4 foot level.
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