Structural insulated panels (SIPs) are a building material that sandwiches a thick polystyrene foam between two rigid boards (oriented strand board, or OSB). This creates a strong, lightweight, and very energy-efficient product that essentially combines the framing material with the insulation. This eliminates the thermal gap between the exterior and interior wood frame and creates a very tight envelope with a high R-value rating.
SIPs can be be used for most structural parts of a home’s envelope—roof, walls, and even floors. They go up fast—a good crew with a good plan can frame all the exterior walls of one floor of an average-sized house in a day. The panels are strong, too—up to three times stronger than a conventional framed house.
While SIPs are typically used for new builds, they can also be a good technique for a remodel as well. Due to their structural rigidity, and their ability to be used as floors, walls, or roof planes, SIPs can make an exceptionally air-tight wing on a house that acts as a unit. SIPs also create very rigid and energy-efficient floors, which make them a cost-effective choice for a quality addition without a continuous foundation. Here are some photos of SIPs being used in remodeling situation
When SIPs are used as roof structures, the roof then becomes part of the insulated envelope, and the attic becomes living space. That can have a big impact on usable square footage for a home, adding up to 3/4 of the total footprint of the house in conditioned bonus space. Best of all, as soon as the windows and doors are installed, the house is already insulated and ready to hold the heat, better than most houses. That can make a big difference for cold-weather construction.
Overall, while more expensive, SIPs do have some advantages over frame construction. They are highly energy efficient structures with greater structural rigidity. The have been in use for over 70 years, and can make a long-lasting home that will be very comfortable. Where budget allows, this can be an excellent technique to consider, and in some situations, this can even be the most cost-effective way to proceed.
They did a great job managing the projects within budget and schedule, did beautiful work, and even though we were living in a construction zone.
Meadowlark listened to us throughout the project, they always respected our opinions, they responded immediately when we requested their help and they completed all work to our total satisfaction.
They do beautiful work, help with everything from the initial design to the final details of the job. I recommend them strongly for any project, large or small.
Meadowlark designed and remodeled our kitchen in 2016. Overall they did incredible work - from the first design consultation to the final construction walk through.