Fiberglass material resists swelling, rotting, and warping making it the perfect choice for long-lasting durability coupled with exceptional beauty. Due to our unsurpassed engineering capability, Inline has developed the most advanced pultrusion technology. This technical advantage allows us to produce our lineals/frames with a higher glass loading then traditional fiberglass frames. This higher glass loading provides a higher strength and a lower thermal expansion rate. In climates with fluctuating temperatures this benefit keeps the window stable and weather tight, reducing the risk of seal failures and air leakage into your home. Simply put our frames are superior.

In the latest **Life cycle assessment of windows for the North American residential market, the findings stated Fiberglass windows specifically Inline have a 38% longer useful life expectancy than vinyl. The comparison used an Inline fiberglass window.

 

Inline Fiberglass selects only the best companies to work with, and as such our primary glass unit supplier is Cardinal Glass Industries. When ordering glass units directly from Cardinal we are able to maintain the highest quality standards for our customers, Cardinals insulating glass boats the lowest failure rate in the industry. Whether you are a window and door manufacturer, building code official, architect or even a home buyer, Cardinal is able to bring you the confidence that the insulated glass unit ( IGU ) you are selecting is designed to meet or exceed the applicable code or standard for your project.

Our fiberglass window frames expand at virtually the same rate as glass, unlike all other framing materials that expand far greater than the glass they surround. They maintain a tight seal, so they’re resistant to leaks and window failures that can compromise energy efficiency and long-term performance. 

** Life cycle assessment of windows for the North American residential market: Case study” by the University of British Columbia. Scandinavian Journal of Forest Research, 2008.