For this wood window replacement installation in Lansdale, PA, we installed Marvin Infinity fiberglass double hung windows. You can see the existing wood windows were chipping and cracking, but there was also seal failure, so the performance of these windows was declining heavily. The homeowners wanted something durable, longlasting, and gorgeous, making Marvin Infinity fiberglass windows ideal for this historic home window replacement. As you can see, the style of the windows is very similar, but the fiberglass frame is much more resistant to warping, cracking, and rotting, unlike the previous wood. This means a secure performance and boost to energy efficiency.