If you're shopping for replacement windows, check out the wide assortment of shapes and sizes. Here's how to find the right windows for your project.

Before going to a home improvement store or windows showroom, think about your needs. Are you looking for a few replacement windows for one room or a series of windows for an entire floor?

When buying a few replacement windows, you typically want to keep the same size and shape as you have in the rest of the room. This helps aesthetically and keeps your contractor from having to resize the window opening, which should save on the size of your home improvement bill.

If you do want a larger window, make sure to keep the size and shape proportional to the other windows for consistency. Your contractor can take measurements to ensure you keep the same window proportions.

Buying Many Replacement Windows

When replacing a whole floor of windows, you have more leeway in selecting the size and shape. Talk with your contractor about which styles blend with your home's architecture. If you have an older house, for example, look at double hung windows, because they were popular at the time. This gives you windows that are installed vertically and are shaped like rectangles.

If your house is contemporary in style, then look for large picture windows and casement windows that highlight the decor. These windows might be square in shape and take up more horizontal space.

Also consider coordinating the window shape with:

• The geometric lines of your house
• The roof lines
• The shape of your front porch
• A three sided family room addition

The size and shape of your replacement windows are important considerations. Spend some time examining your needs and the architectural style of your home before starting this home improvement project.