¿What can we built with TRIDIPANEL?

Practically anything!, the applications are limitless, click below to see Before and After projects.

See Gallery Before & After


TRIDIPANEL is a pre-manufactured panel system to which a mortar mix  (2,500 psi ) is applied on site to make one of the strongest building materials in the market.

All panels are 4’ (1.22 mts.) in width, these can have an insulating core from 1.5″ ( 38 mm ) up to 5″ ( 127 mm ) of various densities of EPS (Expanded Polystyrene )  This core can also be 100% Recycled for those projects searching for LEED Recognition.

The panels can vary in lenght from 8′( 2.44 meters ) to up to 40′( 12 meters ).

The Welded Wire Fabric or mesh is a 2″ x 2″ grid of 11 ga or 12.5 ga high tensile Galvanized wire, and the heart of the system is composed of 9 ga. galvanized high tensile wire.

The Patent

The Tridipanel thecnology was developed by EVG from Austria and INSTEEL PANELMEX S.A de C.V. enterprise decide to apply it since 1992. Our structural panels are made under high quality standar and with the most high technology in the world.

The lightness panels offer advantages to decrease shipment costs, ease handle and quick assembly.

Thanks to its extraordinary flexibility in its design, ease assembly, several uses and its heavy duty, it is changing construction method to the future.

Assembly Manual

1 – Unloading and storage of materials


The lightness of these panels mean that they can be quickly unloaded and the use of special equipment is not required, however it is recommended.

The panels can be stored outdoors for weeks and not be affected by the weather, however special care should be used because for their lightness these can be affected by strong winds.

If the site is located in high rain areas, tarps should be used so the core doesn’t absorb to much water.

2 – Anchoring the system to the foundation.


With TRIDIPANEL, we the most common anchoring process is :

# 3 or # 2  bars.  These are placed on the foundation at a distance of max. 2′ ( 60 cms.)  between one and the other.   These should also be at least 2′( 60 cms.) long from the finished floor.   Furthermore, these can be staggered and we recommend placing both on the inside and outside of the panel system.  Refer to Typical details.

These rods can be placed to the slab using with chemical cement (epoxy ) following the manufacturers instructions as the depth with depend on bar diameter.


3 – Assembly stage

The panels must be raised and then slid down so the previously installed bars are fitted between the mesh and the EPS core.   After panel has been correctly set, tie bars to panel mesh with annealed steel wire.

Is important that the polystyrene is removed (melted) at least 1″ (2.5 cms) around each and every anchor bar to ensure concrete will surround these connections.


After assembly, all panel joints shall be covered with strips of mesh of the same gauge or greater.   Normally the strips are 1’x 4′, but wider accessories can be used if necessary.  The use of pneumatic ring tools is recommended for speed, however regular tie wires can be used, making sure to push all knots inward so it doesn’t bother the mortar application process. An important rule here is that there shall be no panel joint without overlapping cover mesh.


Angle mesh is used on the inside and outside of all corners.  Normally 1′ wide strips are used on the inside and 2′ wide strips on the outside.

Additionally, there’s an accessory called U mesh or Cap mesh.  This is installed mostly on window and door openings and on overhands.  However it will depend on the jamb solution the designed defined for each project,  there are my details as to how to solve this.

4 – Aperture set up


To trim door and windows openings, first mark the exactly location by referring to the project, then cut the wire on one side, cut the insulating core after that and remove it,  finally cut the mesh on the other side of the panel.  The removal of truss wires is also required.   Refer to typical details that apply to each project so the size of the window opening is cut accordingly.


After cutting the opening, be sure if using U mesh applies.   It will depend on the applicable jamb solution.


5 – Utilities

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Most if not all installations will run between the mesh face and the insulating core.    In most cases additional space will have to be made to fit certain pipes or boxes.   Referring to the plan, mark the position of the boxes, water connections or sewage lines.

Then,  remove or melt the core as required.

Cut the mesh face to place boxes or run lines, if excess cutting was requierd, be sure to cover that area with a strip of joint mesh.

Run cables even before concrete is applied if desired.

Tips :

Pressure test water lines before applying cementitious skins

Protect any copper lines from contact with steel in panel if applicable.


Sometimes the lines can be installed on the panel before installing the panel on the slab, however special care has to be taken so anchoring bars do not coincide with these pipes.


6 – Roof and slabs


It is customary to place panels perpendicular to the shortest span, however it is not a rule.   Be sure to not leave any joint on either side without overlapping mesh.

The engineer of record with define the amount of reinforcement if any that has to be added to the system.   This will normally be on top around the edges and on the bottom layer at the center of the span.   If the bars are situated between the mesh and the EPS remember to remove foam around each bar.

In some cases, “pocketbeams” can be specified, these are cavities within the panel that will have reinforcement and be filled with concrete together with the top layer to become monolithic “truss” type elements.

Shoring has to be used to hold the panels when the concrete mix is poured.   It is recommended that the compression layer ( top ) be poured first and after 48 hrs the bottom layer can begin.

Shoring shall be defined by the Engineer or GC and should never be more than 36″ apart.

The compression layer shall never be less than 2″ ( 50 mm ) and the bottom layer has to be at least 1.25″ ( 31 mm ) thick.  These shall always be at least 2,500 psi.

The use of up to 3/8″ aggregate on the top compression layer is acceptable and will permit the worker to obtain a nice smooth finish.




Shoring can be removed partially after several days to begin the application of the bottom concrete layer.

Never remove all the shoring until the top compression layer has had enough curing time and settled.    Depending on the use of add mixes, this can be up to the 28 days that concrete requires to reach it’s specified psi.

7 – Doors and Windows


The Windows and doors jambs can be placed before the concrete is applied, but special care is required to protect these.

This process is normally defined within the building instructions of each project.


4 Elements compose this Structural Building System

  1. Expanded polystyrene monolithic sheets
  2. Two layers of 2”x2” (2.5 ga &11ga) galvanized welded wire mesh.
  3. Galvanized diagonal truss wires that pierce the core and are machine welded to the wire mesh layers ( all automatic by the EVG patented equipment ).
  4. 2,500 psi. cementitious skins on both sides, this can be as thin as 1.25″ or thicker if a longer fire rating is required.

TRIDIPANEL can withstand what Mother Nature throws at it!!

We have testimonials to prove it.
Go to resistence tests

TRIDIPANEL is a state of the art system, some tools will help use it accordingly

Overview these tools.