Building with ICF

When building with Marc ICFs, construction time is reduced to 50% and the working site is cleaner. A 10 ten step construction guide you must follow in order to build a low-energy house:

Step 1

Assemble the rebars of the corner and intersections casings according to the structural designs. On the vertical rebars left for binding, you値l place the sheaths that will keep in place the vertical rebars of the walls. Then you draw the internal contour of the ICF wall and the place where the doors and windows openings will be, on a normal foundation or a flat, leveled surface.

Step 2

Start placing the corner ICFs, then place the straight forms towards the centre of each wall segment. Use self-locking plastic clamps to bind the formworks in order to have a strong structure. Then, place the horizontal rebars on the upper part of the polypropylene spacers. The clips fix the rebars and eliminate the need for wire binding..

Step 3

Install the second row of ICFs, reversing the corner blocks, so that the second row completes the first one in a weaving pattern. Now you should check the level all along the ICF wall. If the level is not even, use fixing wedges or cut at the base, according to the needs.

Step 4

Repeat the operation for the next rows of ICFs, by placing them on top of each other, so that they are well fixed in a weaving pattern (Legolike), being careful, at the same time that the polypropylene spacers are perfectly overlapped to facilitate the assembling of the vertical reba

Step 5

Starting the 3rd row, install all along the interior perimeter of the structure the bracing system, respecting the previously drawn line. They help you maintain the alignment of the walls before and during pouring the concrete.

Step 6

FAfter installing the bracing system, you値l place the vertical rebars inside the jointing sleeves and you値l tie them with wire to the horizontal rebars from the 3rd row and the tie rod, then you値l keep on casing as the project specifies. For each floor of the building, place the ICFs up to the highest end, as it appears in the structural plans.

Step 7

Place wood frames in the gaps left for doors and windows. Advice: Before placing the wood frames, we recommend to put a 2-6 cm sheet of EPS in order to avoid the thermal bridge between the concrete and the joinery and to allow the dilatation of the joinery at temperature variations. You can use ICF scraps.

Step 8

Pour the concrete in the ICFs, using a concrete pump fitted with a flow reduction adapter. The concrete is poured in a spiral movement, up to a height of 0,9-1,2m of the wall, until it reaches the upper part of the wall. During this process, you値l use a small diameter vibrator in order to vibrate the concrete and remove all air bags that might appear in the concrete. Using this method, you can pour one floor a day. Attention! Not using a concrete pump fitted with a flow reduction adapter draws to movements of the walls and even explosion risks. It is forbidden to pour concrete without a flow reduction adapter!

Step 9

Level the concrete until it is even at the upper part of the last row of ICFs. The assembling of the fixing elements for the purlins or ceiling beams will be done before the concrete hardens.

Step 10

Remove the bracing system once the concrete hardened, then continue to the following stages of the construction works. We recommend removing the bracing system 4-5 days after pouring the concrete and protect the facade by finishing it with fiberglass mesh and adhesive.
Note: The Marc ICFs are used only for casing and thermo-insulating the reinforced concrete walls.

Building with MARC ICF is Stronger - Faster - more Insulated - more Economical

 Building steps in images
 Building procedure

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graphite polystyrene - Builder's benefits

  • Easier handling due to weight advantages
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  • Weather-independent construction
  • No skin-irritating effects
  • Easier transportation due to weight reduction.

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High - class insulation

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