Electrical and plumbing installations

Electrical and Plumbing Installations:




MagRoc™ SIPS  panels are designed with factory pre-cut electrical chases running vertically in the EPS foam core @ 16" (300mm) on centre. This allows for installations at intervals similar to convention construction layouts. The panel installations crew together with the owner/builder and the electrical contractor, review the electrical service locations as shown on the drawing and also review for future adaptations. The  locations as decided are marked out and the panel installers pre -drill the upper or lower plates corresponding with the particular panel chases to be used.



The electrical outlet or switch is drawn on the panel face at the specific location and height desired. The box is then cut out using a drywall router or drill and jigsaw and the foam core is removed with a small purpose built foam cutting hot knife. This creates an appropriately sized cavity intersecting with the vertical wire chase and the wire can then be pulled through the plate down or up the chase and out through the box/switch cavity.


The electrician can then connect the fixture and place it back into the cavity, temporarily pinning it in place with screws or nails. A renovation style box can also be used. The cavity is then filled around the box with expanding, rated PUR foam. The foam fills all voids and securely adheres the fixture box in place. It is important to position the boxes squarely and securely in the cavity or adjust them before the foam has set.

When the PUR foam has fully expanded and set the excess over fill is removed flush with the panel face by trimming with a razor knife. The temporary pins are then removed and the fixture is ready for the face plate when appropriate in the scheduling sequence.




In the case of plumbiing pipes or vents it is generally necessary by code or better by design to place them in an interior wall. If the interior walls are conventional wood framed then the process proceeds as per conventionally accepted practices.


If such an installation is required and acceptable in an exterior panel wall or if all the walls in the house are SIPS panels walls then the process is as follow:


The location will need to be determined before the panels are installed and market out in the desired location. As the panel assembly proceeds the installers will determine if the pipe or vent will fall on a natural panel connection joint or somewhere mid panel. The plumber will need to install an appropriate length of pipe to allow the panels to be installed around it and have the pipe end accessible later for further connections. In the event that the pipe/vent falls on a natural joint then it is a simple matter of relieving the foam core in each panels foam edge to insure adequate cavity to allow the pipe to be encased and still have the panels edges touch to complete the wall faces. The voids around the pipe are filled with expanding PUR rated spray foam from above to complete the insulation and seal.

If the installation needs to occur mid panel the panel is split mid pipe o/c and the foam is relieved at cut edges and then all proceeds as above.

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