Insulated Panels are prefabricated building panels utilized in floors, partitions, ceilings on buildings. Installing insulated panels for building constructions are aimed to ensure the energy effectivity, easy and fast installation and a decrease in operating costs. A structural insulated panel (SIP) is a composite building materials; consisting of an insulating layer core sandwiched between 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 reminiscent of plywood, pressure-handled plywood for beneath-grade foundation walls, metal, aluminum, cement board corresponding to Hardie Backer, and even exotic supplies like stainless steel, fiber-reinforced plastic, and magnesium oxide can also be used in replacement of OSB. SIPs provide continuous air and vapor barrier as well as elevated R-Value compared to traditional constructions. When labor price, materials waste and energy efficiency are considered SIPs are comparable to more conventional building methods.
The Idea 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 have been used to build test properties and tested after 30 years to disclose that the panels retain their initial strength. In 1952 Alden B. Dow created the primary foam cores SIPs which were being mass produced in 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, partitions, roofs etc… for the buildings. They’ve the ability to resist the bi-axial bending and lateral shear; so, they’re very a lot suitable to be used as roofs and floors. 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 in the foam. The block spline is a thin and slender SIP assembly that’s inserted into recesses within the foam along the panel edges. These connections end in a continuous foam core across the panels. This helps to eliminate air filtration on the joints.
Another joint connection is Mechanical cam locks; create a tighter joint between the panels. In any type of connection, the seam along the sheathing should be covered with a continuous line of panel tape. Openings could occur on the edges and corners of the panel, and so the panel foam might be recessed to access lumber headers. Any opening within the SIPs that accept one other enclosed element have to be properly sealed.
Benefits and Drawbacks
1. SIP provides the tighter building envelope and the walls will have higher insulating properties.
2. Lower in operating costs.
3. Buildings made with insulated panels may be easily dismantled and reused
4. Insulated panel properties (power and thermal insulation property) will remain the same if reused.
5. It is cost effective as it might be put in easily
1. Quite poor performance with respect to the noise control.
2. May 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.
The Structural Insulated Panels come prefabricated and ready to be assembled, and therefore it helps to speed up the construction.Also, it requires minimal equipment and workforce and hence price effective.
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