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Introduction

Insulated Panels are prefabricated building panels used in floors, walls, ceilings on buildings. Installing insulated panels for building constructions are aimed to ensure the energy effectivity, straightforward and fast installation and a decrease in operating costs. A structural insulated panel (SIP) is a composite building material; consisting of an insulating layer core sandwiched between two layers of metals.

Features of SIP

SIP’s are commonly made of the Oriental Strand Board (OSB) panels sandwiched around a foam core made of expanded polystyrene (EPS), extruded polystyrene (XPS) or inflexible polyurethane foam. Different materials similar to plywood, pressure-treated plywood for beneath-grade foundation partitions, metal, aluminum, cement board comparable to Hardie Backer, and even exotic materials like stainless metal, fiber-reinforced plastic, and magnesium oxide will also be used in replacement of OSB. SIPs provide steady air and vapor barrier as well as increased R-Value compared to traditional constructions. When labor price, material waste and energy efficiency are considered SIPs are comparable to more conventional building methods.

History

The Concept of Structural Insulated Panels (SIPs) introduced The Forest Products Laboratory in Madison, Wisconsin in 1935. The laboratory developed a prototype panel consisted of framing members, plywood and hard board sheathing, and insulation. These initial panels had been used to build test homes and tested after 30 years to disclose that the panels retain their initial strength. In 1952 Alden B. Dow created the first foam cores SIPs which were being mass produced within the 1960’s.

Methods to use SIP

The SIPs are designed to resist axial loads, shear loads and out of edge loads. These can be utilized for floors, walls, roofs etc… for the buildings. They have the ability to withstand the bi-axial bending and lateral shear; so, they’re very a lot suitable to be used as roofs and floors. Essentially the most widely used panel joint connections are the Surface spline and Block Spline. The Surface spline Joint Connection consists of the strip of OSB or plywood inserted into slots within the foam. The block spline is a thin and narrow SIP assembly that’s inserted into recesses within the foam alongside the panel edges. These connections end in a continuous foam core throughout the panels. This helps to eliminate air filtration on the joints.

One other joint connection is Mechanical cam locks; create a tighter joint between the panels. In any type of connection, the seam alongside the sheathing have to be covered with a continuous line of panel tape. Openings might occur at the edges and corners of the panel, and so the panel foam could be recessed to access lumber headers. Any opening within the SIPs that settle for one other enclosed component must be properly sealed.

Benefits and Drawbacks

Benefits:

1. SIP provides the tighter building envelope and the partitions will have higher insulating properties.

2. Lower in working costs.

3. Buildings made with insulated panels can be simply dismantled and reused

4. Insulated panel properties (power and thermal insulation property) will remain the identical if reused.

5. It’s value efficient as it will be put in easily

Drawbacks:

1. Quite poor performance with respect to the noise control.

2. Can be damaged by moisture. Better to make use of the panels with waterproof surfaces.

3. Panels should be properly protected from pests/insecticides.

4. Requires a proper mechanical air flow system

5. Modification of the initial project is costly.

Conclusion

The Structural Insulated Panels come prefabricated and ready to be assembled, and therefore it helps to speed up the construction.Additionally, it requires minimal equipment and workforce and therefore cost effective.

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