HighR ICF Specialist | ICF for Floors, Roofs, and Tilt-Up

Quad-Lock Ties secure the Quad-Lock Panels to form the cavity for the concrete. Quad-Lock Ties:


  • lock-in the panels in 4 ways (hence "Quad-Lock"): across the cavity, across butt joints, vertically from one layer to the next, and against shear-forces along horizontal seams.
  • serve as an attachment point for bracing and finish materials.
  • serve as a locator for reinforcing steel using the ties' molded rebar chairs.
  • help to secure corners, T-Walls, etc.
  • reduce risk of water migration along ties with a water stop.

Ties are placed at the intersection of the horizontal and vertical joints of all panels and every 12" [305mm] in-between, which are marked by the deeper, wider grooves in the panels. The ties are placed to align every 12" [305mm] vertically and horizontally in every wall.

Two panels and four ties form one Unit. The ties are recessed from the outside surface of the panels to prevent thermal bridging and the telegraphing of dissimilar materials when finishing with stucco.

Ties are available in six different standard lengths for varying wall widths and are color-coded for easy identification. Ties can be snapped to Extender Ties to add 12" [305mm] to any standard tie length. Multiple Extender Ties can be joined to make even wider cavities. Quad-Lock ties are molded of a tough plastic, High Density Polyethylene (HDPE).


The unique tie design and placement provides to following benefits:

  • Ensures a uniform concrete thickness throughout the wall.
  • Prevents the deflection or spreading of all edges of the panels to ensure a smooth, planar surface and prevent blowouts. This is achieved through the placement of the ties at all horizontal AND vertical joints where panels are most vulnerable to hydrostatic pressure during concrete placement.
  • Provides additional strength at high-pressure areas such as corners, T-walls.
  • Allows a single tie to be easily modified for specific tasks by cutting the ties into split ties and tie flanges which are used near wall junctions and openings.
  • Allows unlimited wall cavity size by combining Extender Ties with standard ties.
  • Quad-Lock Tie Dimensions


    Extender Ties

    The Quad-Lock Extender Tie will allow builders to create walls of almost any desired concrete thickness. Extender Ties are designed to interlock with regular Full Ties to add 12" [305mm] of concrete cavity. Combine multiple Extender Ties with Full Ties to create concrete cavities larger than 24"[610mm].

    Slab Ties

    Slab Ties, used in combination with the Slab Bracket and 2x4 lumber, will provide a solid support system for 1 to 2 layers of outside panels during the concrete pour of a floor slab. This system eliminates the need for exterior scaffolding, ladders, plywood forms & bracing. Available in all sizes except Black Ties (4").

    Quad-Lock Alignment Systems (Bracing)

    Following are alignment systems (bracing) to use with the Quad-Lock Building System.

    • steel & aluminum construction
    • adjustable
    • reusable; available for sale or rent from most Quad-Lock Dealers

    Wood; 2x4 or 2x6 Dimension Lumber Specs:

    • full height
    • nailed or screwed together
    • predrilled for #8 or #10 screws 12" o/c
    • minimum number of uses, usually reused for framing later

    Insulated Concrete Forms for Floors, Roofs, and Tilt-Up

    Quad-Deck uses patented technology to create an energy efficient and quality insulating concrete floor or roof system. Ideal for use in both commercial and residential construction, Quad-Deck combines the strength, security, and reliability of reinforced concrete with the energy efficiency, fast construction, and comfort of insulating concrete forms.

    Each of the expanded polystyrene (EPS) panels are supported and reinforced with two integral steel beams molded into the product from end to end. The result is a self-supporting joist and deck forming system that provides the maximum strength of a reinforced concrete deck with a minimum of materials and labor. Contact us today to find out about using Quad-Deck for your next project.

    Main Construction Steps

    • Setup Shoring & Quad-Deck
    • Install Rebar & Pour Concrete
    • Remove Shoring & Finish It

    Large town Buildings

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    • Date: 20.12.2015
    • Location: UAE, Abu Dhabi
    • Value: $1,156,000.00
    • Category: Building, House, Projects
    • Investor: joomlastars

    Project Planning

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    Quad-Lock Metal Brackets

    Quad-Lock unique metal brackets make the assembly of many ICF wall elements simple, quick, and secure. Metal brackets interlock with panels and ties to provide critical support against concrete pressure while requiring no external bracing. This also means that in most cases, crews can work safely from the inside of the building (from successive floor levels) with no ladders or scaffolding necessary on the outside of the building.

    Corner Brackets

    Quad-Lock corner brackets allow for the quick and secure assembly of 90 degree corners and eliminate the need for any external corner bracing. They come in two configurations: the Inside Corner Bracket and the Outside Corner Bracket.

    • Inside Corner Brackets are used on every row of the inside panels, with the exception of the top row, for 90 degree corners and on the inside corners of T-walls.
    • Outside Corner Brackets are used on every row of the outside corner panels, again with the exception of the top row, and as reinforcement for the back wall of T-walls.
    • Corner brackets are made of flat galvanized steel and are designed to fit over Quad-Lock panels placed at 90° to one another. The brackets have holes that match the panels' foam interlock knobs, and slots that allow the ties and tie flanges to be inserted once the bracket has been placed over the panels.

    When installed properly, the corner brackets combined with the ties and tie flanges alone will absorb the forces of the poured concrete at the recommended slump and pour rates, eliminating the need for structural corner bracing. Bracing may be needed only to assure plumb and alignment in relation to the rest of the wall.

    Corner and angle brackets are recessed from the surface of the EPS panels to minimize thermal bridging and avoid flashing through stucco. Angle Brackets

    Quad-Lock hinged angle brackets allow wall angles of almost any degree to be easily formed and braced. Once the panel ends are mitered at the bi-section degree of the desired angle, the bracket folds out to match the angle of the wall. Similar to the 90° corner bracket, ties are placed through the angle bracket and into the panel. Angle brackets are only needed on the outside of the angle and will ensure that the wall is held together plumb and true without the need for extra bracing.

    Endcap Brackets

    The Quad-Lock Endcap Bracket helps to form insulated wall end caps. With scrap foam pieces, the Endcap Bracket replaces lumber or plywood forms and leaves no exposed concrete. The Endcap Bracket is similar to an outside corner bracket and can be used for insulated wall ends ranging from 6" to 12" [150mm to 300mm] nominal cavity size.

    Straight Brackets

    Straight Brackets allow the installer to secure a 4-way wall intersection by placing pairs of 34" long Straight Brackets that span across intersecting walls. This provides a solid connection between two wall segments that have been interrupted by another wall plane. For example, the diagram below shows an exterior wall that passes between an interior wall and an exterior buttress wall. This situation is common in commercial and multi-family residential buildings, in areas like:

    • Deck areas requiring separation between units
    • Support of heavy roof components
    • Reinforcement of tall retaining walls

    The buttress wall can now be secured back to a longer wall section, and will not have to be braced from outside the building line. In the case of multi-story construction, the higher the building, the safer and more economical this becomes, as crews can work from the safety of the inside of the building. See Details

    Brick Ledge Ties

    Quad-Lock Brick Ledge Tie can be used to create a concrete ledge for brick or stone exterior finishes or as an interior support for floor joists. It easily transitions the wall from a 12" [305mm] concrete cavity to a 6" [150mm] cavity (when used with R-22 [U-0.28] panels), leaving a 3¾" [95mm] solid concrete supporting ledge, plus a 2¼" [57mm] wide high-density foam panel capped by a galvanized Metal Track.