FiberFrame by Comfort Line

Fiberglass Windows, Patio Doors, Sunrooms & Storefront

Fiberglass windows outperform wood, vinyl, and aluminum.

Fiberglass is a durable, energy efficient, low maintenance material superior to wood, vinyl and aluminum in many ways. Fiberglass is stronger and has nearly zero thermal expansion rate in comparison to vinyl. Compared to aluminum, fiberglass offers thermal performance advantage.


Top 3 reasons fiberglass windows excel at energy efficiency:

Fiberglass has almost zero thermal expansion, essentially the same as glass itself, which means tighter seals against weather and always a true fit.

Fiberglass can withstand all of the outside elements and harsh weather. It will never rot, rust, corrode, warp, crack, dent, or split.

Fiberglass has low thermal conductivity, which means that it doesn’t allow heat or cold from outside into a building’s interior.

Compared to other windows, Fiberglass is:

It is 8x’s stronger than vinyl. 3.5x’s stronger than wood/vinyl composites and 2x’s stronger than aluminum.

Less thermal conductivity than aluminum (500x’s less), so it doesn’t allow heat or cold from the outside into a building’s interior environment.

Almost zero thermal expansion rate (essentially the same rate as glass) means tighter seals against weather. Vinyl expands at over 7x’s this rate.

Virtually maintenance-free frames stay true to form due to strength of materials. No need for sanding, painting, or staining.



Rowe Fenestration | Suntuitive, Dynamic Glass

Bob Sharman, Facade Systems Designer
916-606-1390 /

Micah Zurer, CSI, Customer Advocate
415–730–9362 /

Rowe Fenestration | Suntuitive, Dynamic Glass
Rowe Fenestration | Suntuitive, Dynamic Glass
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