As you can see from the picture above, the an awning and casement window design are completely different than a double hung or a slider. Not just in appearance but in the way they function and operate. These window designs use a crank style operator and incorporate a bulb type seal around the perimeter of the window to seal out air infiltration. The double hung and slider use wool pile weather stripping to allow the sashes move within the masterframe.
Most awning and casement windows use a cam style lock to clamp the window shut. By using this compression type seal around the perimeter in conjunction with the cam style lock,provides the tightest sealing windows on the market. Generally when this window needs service, it’s the operator and the bulb seal that needs to be replaced. If this is the window style you have, give us a call and we will be happy to give you a free assessment as to the condition and the repairs needed to bring your windows back to top performance.