Polystyrene VS Polyurethane Garage Doors

When it comes to insulating your garage door, your two main choices are polystyrene and polyurethane. The differences can vary in cost, warmth level and installation.

What are the differences between polystyrene core and polyurethane cored garage doors?

Polystyrene Garage Doors

Polystyrene is the same material as you’d find in a coffee cup. It is shaped to fit the door panel cavities but does not guarantee complete coverage. While this is often a less expensive option, it can leave pockets in the interior of your door where insulation will not fit. Moisture can collect in the interior of the door causing the door to rot from the inside out. Further, these doors do not last as long as a polyurethane garage door and have a much lower true R-value.

Polyurethane Garage Doors

This type of insulation is a liquid spray that expands and hardens to fill every nook and cranny of the interior of your garage door. This results in a higher R-value and with the airtightness of the foam, it won’t allow moisture into the panel, eliminating the chance of rot. Because of the complete coverage of the polyurethane foam, your overhead door will be quieter when opening and closing, and less susceptible to vibrations and shaking.

How much more is a polyurethane cored garage door?

Depending on who is selling them, some dealers are selling the cheaper polystyrene doors for the same price as polyurethane insulated garage doors! But there should be a 10-12 per cent difference in price. It pays to always have at least three local garage door companies provide you with a comprehensive quote.

Just remember to give us a call if you feel like someone is trying to pull a fast one on you, we are here to help!