Other alternatives are made of a polyurethane foam insulation core - offering six times the energy efficiency of wood - faced on both sides with vinyl or aluminum. larson exterior door these typically cost for a 6-foot-wide door. all well-made nonwood doors are designed with thermal breaks (separations between indoor and outdoor surfaces that block the conduction of heat or cold.) glazing options of course, the largest part of a glass exterior sliding door door is glass. to make a door truly energy efficient, high-performance glazing is key. fortunately, this is standard with most high-quality sliders. you''ll find double-paned glass with low-e (low energy) coating and, in some cases, argon gas filling. low-e reduces heat transfer and protects against ultraviolet damage; argon gas filling provides larson greater insulation. some manufacturers let you specify the glazing you want when you order. where sun-caused fading or damage can e a serious problem, you may want to opt for glass with a solar bronze or solar gray tint to reject ultraviolet rays. in addition, some companies offer decorative stained or beveled glass with true brass caming (leading). for bathrooms or other places where privacy is a concern, obscure glass is available.

perhaps no single architectural feature is more emblematic of western living than the glass sliding door. for more than 50 years, sliding glass doors have opened our homes to generous natural light and views, simultaneously giving us easy connections with decks, patios, and gardens. contemporary sliding, or gliding, doors have come a long way since yesteryear''s exterior aluminum sliders, infamous for their stark appearance, sweating frames, and cold glazing. today, a new generation of high-quality models offers energy door efficiency, durability, safety, and contemporary style. size and style sliding doors come in a variety of sizes. in addition to the standard 6-foot, 8-inch height, they''re made 6 feet, 11 inches tall or even 8 feet tall. you can also buy three- or four-door-wide configurations that are as wide as 16 feet. and sliders are made with one fixed panel and one sliding panel, or with both panels sliding. most manufacturers extend your design options by providing matching rectangular and roundhead transom windows. some large manufacturers offer several sliding-door lines with a range of prices. you''ll find doors that have wide rails and stiles (horizontal and vertical framing elements) like french doors, and doors with thinner rails and stiles that maximize glazing.

therma-tru doors, which are made of fiberglass, have redefined the traditional concept of high-performance building supplies. the company pioneered the polyurethane foam core, now cec-free, which larson offers five times greater insulation value than wood doors. therma-tru is also the first exterior door manufacturer to feature a full thermal break which exterior prevents the transmission door of heat and cold through the surface. our doors are made of fiberglass so they won''t dent, crack, split or splinter, which means they eliminate callbacks for you. larson therma-tru recognized the need for a more durable, highly efficient door. in 1983, it introduced the first door, the exterior fiber-classic. the door became so popular that today, therma-tru offers three door lines including fiberglass classic-craft, fiber-classic and smooth-star. for the builder and the customer, there''s a therma-tru door to add style and curb appeal to every home whether it''s the ultimate luxury residence or a starter home. beautifully detailed, classic-craft and fiber-classic doors look and feel just like wood. their durable fiberglass surface features a rich red oak grain, but unlike wood doors door they don''t come saddled with inherent maintenance problems. plus, they''re backed by a lifetime-limited warranty.

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