Garden windows are an attractive options for adding light and space to any room.   Our garden windows come with many options form grids, exterior colors and interior finishes. No matter what your requirement, budget or personal taste, we have a window to fit.


  • Fully welded, rigid PVC vinyl frame for greater strength and stability
  • Aluminum and steel reinforcements in the front mullion
  • Top sloped insulating glass (a constant 35-degree pitch) is tempered for improved safety and unit integrity.
  • The projection of the window from the exterior wall face is a constant 17 inches
  • Both vents and deadlites have a built-in weep system and external glazing
  • Exterior grade plywood head board, seat board, and jamb are 1-1/4″ for improved structural and thermal performance

andersen LOGO

Mastic 3000 Series replacement windows make the most of your investment. The 3000 Series allows you to replace and remodel with confidence because these windows deliver the value, performance and style you deserve for your home


“ From the estimate to the job completion, it was an excellent experience. They listened and completed the project that solved my problem, all at a fair price. The company deserved a six star rating if it was available. ”

– Dave L.
Allentown, PA

“ The project was scheduled and proceeded exactly as quoted. Steve Pisulak was prompt in our appointment to discuss the project and he was able to schedule the work in co-operation with the roofer we were using, so the overall project was completed on time. We used Lehigh Gap Seamless Gutters because of a special gutter screen we hadn’t seen before, and due to the height of our house this option was the right choice for us. We would recommend this company due to their reliability. ”

– Ann K.
Jim Thorpe, PA

“ Excellent, ethical company to work with. I originally contacted this company to do the seamless gutters. After talking with the sales person, Steve, I found they did other work as well. So I started with gutters, added a new roof, 30 plus windows, one storm door with dog portal and 2 customized storm doors, vinyl ceiling on back porch, new railings on back porch, columns wrapped, new stairs to the back yard and new railings on my side porch. This company is fair and honest…the salesman is honest and one heck of a nice guy…no lowballing. If you need work done on your home, please give them a shot. I seriously doubt you will have any regrets. I have none and I will have them here to do additional work. ”

– Lynda B.
Palmerton, PA

“ My experience was excellent. They responded quickly to my inquiry, reviewed my unusual and difficult project promptly, returned for a follow-up discussion and completed the job expertly. They left me with a good feeling from the initial contact through the completion of the job. ”

– Robert G.
New Tripoli, PA