An R-value tells you how well insulation resists heat flow — basically, how good it is at keeping warm air in during winter and hot air out during summer. The higher the R-value, the better the insulation works (to an extent). Choosing insulation with a higher R-value means your home stays more comfortable and uses less energy to heat and cool.

A U-factor shows how well a window, door, or skylight keeps heat from passing through. Lower U-factors mean better insulation — so your home stays warmer in the winter and cooler in the summer. Choosing windows with a low U-factor helps save energy and keeps your home more comfortable year-round.

Signs of poor insulation include uneven temperatures between rooms, high energy bills, and drafts. Call today or reach out online to schedule an estimate.

If your windows have a high U-factor — like old single-pane or wood-framed windows — they probably don’t meet today’s energy efficiency standards. These older windows let more heat escape in the winter and enter in the summer, which drives up energy bills. Also, if you see condensation or fog between the glass panes or multi-pane windows, it’s a sign the seal has failed and the window isn’t insulating properly anymore. Upgrading to modern, energy-efficient windows with a low U-factor can make your home more comfortable and lower your heating and cooling costs.