{"id":205355,"date":"2023-07-06T11:00:47","date_gmt":"2023-07-06T15:00:47","guid":{"rendered":"https:\/\/www.constructionspecifier.com\/?p=205355"},"modified":"2025-06-17T11:57:14","modified_gmt":"2025-06-17T15:57:14","slug":"aluminum-framed-fenestration-a-guide-to-specifying-paints-and-coatings","status":"publish","type":"post","link":"https:\/\/www.constructionspecifier.com\/aluminum-framed-fenestration-a-guide-to-specifying-paints-and-coatings\/","title":{"rendered":"Aluminum-framed fenestration: A guide to specifying paints and coatings"},"content":{"rendered":"<figure id=\"attachment_205359\" aria-describedby=\"caption-attachment-205359\" style=\"width: 373px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/11Linetec_TerraCotta_ColorRing.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-205359\" src=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/11Linetec_TerraCotta_ColorRing-300x237.jpg\" alt=\"Photo courtesy Linetec.\" width=\"373\" height=\"294\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/11Linetec_TerraCotta_ColorRing-300x237.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/11Linetec_TerraCotta_ColorRing-500x394.jpg 500w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/11Linetec_TerraCotta_ColorRing-768x606.jpg 768w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/11Linetec_TerraCotta_ColorRing.jpg 800w\" sizes=\"auto, (max-width: 373px) 100vw, 373px\" \/><\/a><figcaption id=\"caption-attachment-205359\" class=\"wp-caption-text\"><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\"><em>Photo courtesy Linetec. <\/em><\/span><\/figcaption><\/figure>\n<p><strong>By Tammy Schroeder<\/strong><strong>\u00a0 <\/strong><\/p>\n<p>Choosing finishes for commercial buildings\u2019 aluminum-framed vertical fenestration assemblies\u2014windows, curtain wall, storefront, and entrances\u2014often begins by selecting a color. Specialty coatings also can enhance the visual and tactile effects of the finished appearance.<\/p>\n<p>Since fenestration products have both interior- and exterior-facing finished surfaces, high-performance coatings typically are specified to ensure lasting performance with minimal maintenance. An experienced finishing services provider can assist with evaluating the optimal finish to meet performance specifications\u2019 inside and out, while supporting the building project\u2019s aesthetic, sustainability, and longevity goals.<\/p>\n<p><strong>Discover a range of aesthetic choices for colors and visual effects<\/strong><\/p>\n<p>Appearance usually is the first consideration when selecting a finish for architectural aluminum fenestration. With one glance, color can establish<br \/>\na mood, convey information, or reinforce a brand.<\/p>\n<p><em>Color trends<\/em><\/p>\n<p>Architectural design color trends for 2023 include naturally inspired, minimalistic tones that harmonize with serene environments to promote comfort, wellness, reflection, and connection.<\/p>\n<ul>\n<li>Saturated anthracite and deep purples of 2022 give way to this year\u2019s dark bronze and pale aubergine. Warm, earthen tones, tinted with orange and pink, represent simple raw materials such as burlap and dried adobe. Mustard browns, honey yellows, and amber reflect plant-forward palettes. Blues, taking cues from the summer sky and meadow flowers, now are mixed with green or selected in fresh, lighter tones.<\/li>\n<li>Fresh green hues also add biophilic and soothing color to the built environment. Greens commonly denote peace and tranquility, demonstrating health and connection to the natural world. Subtle muted gray-greens inspired by the Earth\u2019s forests, such as lichen and conifer, bring a familiar comforting presence. Compelling blue-greens and dark teals reminiscent of the deep ocean are a calming choice for reflection and renewal.<\/li>\n<li>Soft whites and light natural neutrals, such as unbleached cotton, oat, and bone, unify the framework that connects the built and natural environments. These easy-to-find neutrals create<br \/>\na blank canvas to build the 2023 color scheme. Unsaturated tans and whites found on the warmer side of the spectrum offer an elegant choice. Integrating light neutrals into exterior-facing components create a welcoming and<br \/>\nadaptable appearance.<\/li>\n<li>Designing with simplicity does not necessarily mean being austere. Upbeat colors and cheery tones deliver a pick-me-up to accent the 2023 palette. Natural reds, muted pinks, and soft yellows provide balance. Accent shades of red appear as deep coral or raspberry. Buttermilk, straw, and chamomile yellows elicit joy and brighten with ease. Orchid and rose-quartz pinks add liveliness and energy without overcomplicating the design.<\/li>\n<\/ul>\n<table border=\"0\">\n<tbody>\n<tr>\n<td style=\"padding: 5px; text-align: center;\" bgcolor=\"#67be49\">\u00a0<span style=\"color: #ffffff;\"><strong>STRENGTHS AND LIMITATIONS<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 5px;\" bgcolor=\"#eef6dd\">\n<figure id=\"attachment_205358\" aria-describedby=\"caption-attachment-205358\" style=\"width: 344px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/10Linetec_PaintedSamples_horz.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-205358\" src=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/10Linetec_PaintedSamples_horz-300x225.jpg\" alt=\"Painted finishes can provide a nearly unlimited color range for fenestration. \" width=\"344\" height=\"258\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/10Linetec_PaintedSamples_horz-300x225.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/10Linetec_PaintedSamples_horz-500x375.jpg 500w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/10Linetec_PaintedSamples_horz-768x576.jpg 768w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/10Linetec_PaintedSamples_horz.jpg 800w\" sizes=\"auto, (max-width: 344px) 100vw, 344px\" \/><\/a><figcaption id=\"caption-attachment-205358\" class=\"wp-caption-text\"><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\">Painted finishes can provide a nearly unlimited color range for fenestration. Beyond the traditional color wheel, specialty painted finishes can impart texture, depth, and be completely customized.<\/span><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\"><em>Photo courtesy Lintec. <\/em><\/span><\/figcaption><\/figure>\n<p>The performance strengths and limitations of architectural coatings<br \/>\nfor aluminum are summarized as follows:<\/p>\n<p><em>Strengths of paint<\/em><br \/>\n\u2022Vast array of color choices.<br \/>\n\u2022Small-batch and custom color capabilities\u2014fast and cost-effective.<br \/>\n\u2022Color retention (ultraviolet [UV] resistance).<br \/>\n\u2022 Salt-spray resistance.<br \/>\n\u2022Paint protects and maintains the structural integrity of the aluminum.<br \/>\n\u2022Field touch-up and repainting capabilities.<\/p>\n<p><em>Limitations of paint<\/em><br \/>\n\u2022Fair hardness.<br \/>\n\u2022The cost of high-performance or specialty paints.<br \/>\n\u2022Potential for inconsistent appearance of \u201cmetallic\u201d paints.<br \/>\n\u2022Solvent-based paints are not environmentally friendly without an oxidizer.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><!--nextpage--><\/p>\n<figure id=\"attachment_205362\" aria-describedby=\"caption-attachment-205362\" style=\"width: 233px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_MO-LoewsKCHotel_Ext50_EricBowers.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-205362\" src=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_MO-LoewsKCHotel_Ext50_EricBowers-200x300.jpg\" alt=\"Multiple paint and anodize finishes were applied to the aluminum interior framing systems of Missouri\u2019s Loews Kansas City Hotel.\" width=\"233\" height=\"350\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_MO-LoewsKCHotel_Ext50_EricBowers-200x300.jpg 200w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_MO-LoewsKCHotel_Ext50_EricBowers-333x500.jpg 333w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_MO-LoewsKCHotel_Ext50_EricBowers.jpg 533w\" sizes=\"auto, (max-width: 233px) 100vw, 233px\" \/><\/a><figcaption id=\"caption-attachment-205362\" class=\"wp-caption-text\"><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\">Multiple paint and anodize finishes were applied to the aluminum interior framing systems of Missouri\u2019s Loews Kansas City Hotel.<\/span><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\"><em>Photo by Eric Bowers Photography\/courtesy Linetec and Tubelite. <\/em><\/span><\/figcaption><\/figure>\n<p><em>Special effects<\/em><\/p>\n<p>Experienced finishing service providers can combine scientifically precise color matching, in-house blending laboratory capabilities, and quality-controlled factory application with hands-on artistry for tailor-made solutions. Specialty coatings can include mica and metallic flakes to enhance reflectivity, adding sparkle and shimmer to the base color. Beyond the traditional color wheel, specialty painted finishes can impart texture, depth, and be completely customized to support project specifications.<\/p>\n<p>Softly textured painted surfaces expand the sensory experience from visual to tactile, and present a biophilic element not often seen on fenestration framing. Typically used to mimic the feel of natural stone, textured coatings on architectural aluminum products offer an economical, readily available, lighter weight, and more resilient alternative to the clay-based originals. The fine grain, matte surface of these specialty finishes remains consistent in texture, while colors have a full range of hues representing the spectrum of real terra cotta.<\/p>\n<p>Multi-colored spatter coat finishes also can realistically simulate the look of marble, masonry, and metal, or can provide a completely novel appearance resembling the style of abstract and impressionist fine artists. To achieve the desired aesthetic, multiple colors of architectural coatings are applied on top of a solid undercoat in a hand-crafted original pattern. The paint spatters can be many or few, large or small, thick or thin, speckled or swirled, to produce the desired 3D depth and textured effect.<\/p>\n<p><em>Color code<\/em><\/p>\n<p>Painted finishes can provide a nearly unlimited color range for fenestration. To achieve the desired finish color, use the assigned paint code provided by either the coatings system manufacturer or the finishing applicator. Paint and finishing codes are usually composed of both letters and numbers. As with passwords and other important information, one incorrect number or letter within a code can completely change the result.<\/p>\n<p>Color names such as \u201cSierra Tan,\u201d \u201cLight Seawolf Beige\u201d and \u201cSage Brown\u201d may be easier to remember and more illustrative than \u201cLT621,\u201d \u201cLT614,\u201d and \u201cLT620,\u201d but relying on color names can be a risk. Two paints with the same name can be completely different colors depending on the manufacturer. For instance, \u201cHartford Green\u201d could serve as the name for at least 50 different paint codes. Therefore, it is important to use paint codes over color names.<\/p>\n<p>Remember to double check the paint code is correct. This code can be included in the specification and will be needed for the final order.<\/p>\n<p><em>Sample review<\/em><\/p>\n<p>When color is critical, review a physical sample to confirm client approval before placing the order. Remember the same color can look different in changing light or when placed next to other colors and materials. People see color slightly differently depending on the number of photoreceptors on their retinas and how their brains interpret the optical signals.<\/p>\n<p>With fenestration, the glass selection will have the most influence on how the framing members\u2019 finish is perceived. Pair these samples together for optimal results.<\/p>\n<p>Interior surfaces of finished fenestration are best reviewed indoors using a combination of natural and electrical illumination. Vertical fenestration assemblies are installed at the exterior perimeter, positioned offset and perpendicular to suspended light fixtures. Lamps and task lighting may directly affect and be affected by the fenestration assembly. A light\u2019s angle, lumens, color temperature, and surface reflections also can alter the perceived color of room-facing finished surfaces. When possible, consider replicating the lighting conditions to examine the finished samples.<\/p>\n<p>Exterior-facing finished surfaces should be reviewed outdoors under natural light. The larger the painted area, the more noticeable variation can be, even when the coating is uniformly applied. This is especially true for specialty coatings with metallic and mica coatings because the color depends on the orientation of the reflective flakes. For example, a 1 x 3 m (3.3 x 9.8 ft) wall panel\u2019s color may appear inconsistent when compared to other finished surfaces on the same building at different times of the day or when illuminated at night.<\/p>\n<p>Viewing distance also affects the perceived color. The finish on a curtain wall with a 63.5 mm (2.5 in.) sight line may look different when viewed at a shaded street level than it does looking up at the 20<sup>th<\/sup> floor on a sunny day. When evaluating the finished, installed fenestration assembly, AAMA industry viewing distance guidelines state that coatings should be visibly free from flow lines, streaks, blisters, or other surface imperfections in the dry-film state on exposed surfaces when observed at 3 m (10 ft) from the metal surface and inspected at an angle of\u00a0 90 degrees to the surface.<\/p>\n<p><!--nextpage--><\/p>\n<figure id=\"attachment_205363\" aria-describedby=\"caption-attachment-205363\" style=\"width: 331px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_TX-VA-SanAntonio_BulverdeGlass3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-205363\" src=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_TX-VA-SanAntonio_BulverdeGlass3-300x235.jpg\" alt=\"The Veterans Affairs Community Based Outpatient Clinic in San Antonio, Texas, features a sweeping curved exterior and specified AAMA 2605 durable finishes.\" width=\"331\" height=\"259\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_TX-VA-SanAntonio_BulverdeGlass3-300x235.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_TX-VA-SanAntonio_BulverdeGlass3-500x391.jpg 500w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_TX-VA-SanAntonio_BulverdeGlass3-768x601.jpg 768w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Tubelite_TX-VA-SanAntonio_BulverdeGlass3.jpg 800w\" sizes=\"auto, (max-width: 331px) 100vw, 331px\" \/><\/a><figcaption id=\"caption-attachment-205363\" class=\"wp-caption-text\"><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\">The Veterans Affairs Community Based Outpatient Clinic in San Antonio, Texas, features a sweeping curved exterior and specified AAMA 2605 durable finishes.<\/span><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\"><em>Photos by Tyler Messer, Bulverde Glass, Inc.\/courtesy Linetec and Tubelite. <\/em><\/span><\/figcaption><\/figure>\n<p><strong>PVDF resin-based paint composition<\/strong><\/p>\n<p>Paint coatings may be described as a thin layer of film containing resin and pigments that is applied to a material\u2019s surface to provide protection and a decorative appearance. The resin system determines the performance and properties of the painted finish, and the pigment provides the color.<\/p>\n<p>For more than 50 years, polyvinylidene fluoride (PVDF) resin systems have demonstrated consistent, reliable performance for aluminum-framed fenestration. The percentage of the resin component defines the coating\u2019s designation. For example, a 70 percent PVDF resin-based paint coating formulation contains 70 to 80 percent by weight PVDF in the coating binder or resin, with the remainder of the binder being a compatible acrylic. Although the acrylics are used in relatively small quantities\u2014typically 20 to 30 percent by weight\u2014they can improve the coatings\u2019 pigment wetting and adhesion properties. This way, the acrylic properties complement the highly inert PVDF.<\/p>\n<p>In liquid paints, the resin accounts for approximately 20 percent, the pigment 10 percent, and liquid solvent used to deliver the paint represents up to 70 percent of the total coating system. A small percentage of reducer and additive components also may be included to adjust viscosity, enhance gloss, or impart other characteristics.<\/p>\n<p>PVDF resin-based architectural coatings for fenestration are specified as either 50 percent PVDF or 70 percent PVDF. Occasionally, a paint resin or coating system manufacturer\u2019s brand name may be mistakenly used as a specification. For example:<\/p>\n<ul>\n<li>Hylar PVDF resins are a registered brand of Solvay.<\/li>\n<li>Kynar PVDF resins are registered brands of Arkema Inc.<\/li>\n<li>Acroflur 50 percent PVDF coating systems and Fluropon 70 percent PVDF coating systems were registered brands of Valspar, and are now owned by The Sherwin-Williams Company.<\/li>\n<li>Acrynar 50 percent PVDF coating systems and Duranar 70 percent PVDF coating systems are registered brands of PPG.<\/li>\n<li>Trinar 70 percent PVDF coating systems are a registered brand of AkzoNobel.<\/li>\n<\/ul>\n<p>As standard, PVDF architectural coatings for fenestration typically are two-coat systems that include a primer and the color coat. Three- or four-coat systems may be used for specialty colors and metallics. Typically, the paint code will have a numerical identifier indicating the number of coats and whether a clear topcoat is needed. Adding a clear coat to a paint finish when it is not required will not add value to the finish and may add unnecessary cost.<\/p>\n<p><strong>Streamlined factory finishing with a focus on environmental responsibility<\/strong><\/p>\n<p>Extruded aluminum framing is the most commonly specified material for fenestration assemblies on commercial buildings. Aluminum is infinitely recyclable, widely available, and relatively easy to form and fabricate into windows, curtain wall, storefront, and entrances. Aluminum\u2019s light weight makes it economical for shipping, and versatile for installing either as pre-assembled products or as field-assembled systems. However, it should also be noted, extraction and production of primary metals can be energy intensive and has environmental effects.<\/p>\n<p><!--nextpage--><\/p>\n<figure id=\"attachment_205357\" aria-describedby=\"caption-attachment-205357\" style=\"width: 340px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/1MO-HyVeeArena_FoutchAD_9201-ALT.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-205357\" src=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/1MO-HyVeeArena_FoutchAD_9201-ALT-300x164.jpg\" alt=\"High-performance coatings were specified on the new entrance, storefront, and interior aluminum framing systems of the HyVee Arena\u2014a multi-level sports complex.\" width=\"340\" height=\"186\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/1MO-HyVeeArena_FoutchAD_9201-ALT-300x164.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/1MO-HyVeeArena_FoutchAD_9201-ALT-500x274.jpg 500w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/1MO-HyVeeArena_FoutchAD_9201-ALT-768x420.jpg 768w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/1MO-HyVeeArena_FoutchAD_9201-ALT.jpg 800w\" sizes=\"auto, (max-width: 340px) 100vw, 340px\" \/><\/a><figcaption id=\"caption-attachment-205357\" class=\"wp-caption-text\"><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\">High-performance coatings were specified on the new entrance, storefront, and interior aluminum framing systems of the HyVee Arena\u2014a multi-level sports complex.<\/span><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\"><em>Photos by Foutch Architecture and Development\/courtesy Linetec and Tubelite. <\/em><\/span><\/figcaption><\/figure>\n<p>Before fenestration products arrive at the jobsite, they are finished under factory-controlled conditions to uphold the specified performance and warranty requirements. For complete coating coverage, an electrostatic spray application production line is used for architectural aluminum extrusions, flat sheets, and fabricated parts.<\/p>\n<p>To ensure strong adhesion, the metal is first cleaned, pretreated, rinsed, and dried. After pretreatment, the material falling within certain size parameters is racked onto a carrier system and moved through the liquid paint finishing line. Oversized material requires off-line finishing, which can add extra time and cost.<\/p>\n<p>Once the paint is applied to the aluminum, the solvent\u2019s function is complete. Since some of the solvents used are considered volatile organic compounds (VOCs), they must be carefully managed within the finishing facility. Responsible liquid paint coating applicators use a 100 percent air capture system with a regenerative thermal oxidizer to carefully capture and safely destroy the VOCs, repurposing their energy within the factory. This process ensures there is no adverse environmental impact, and no VOC-related health risk for the product installer, building owner, or occupants.<\/p>\n<p>Before it leaves the factory, the coated and racked material moves to the curing ovens where it is closely monitored to reach peak metal temperature. For proper cure of 70 percent PVDF resin-based coatings, the finished aluminum must reach approximately 232 C (450 F) for at least 10 minutes depending on the material\u2019s thickness and each paint coating\u2019s specific specifications.<\/p>\n<p>Quality assurance (QA) tests coupled with reducing material handling through automation allow for an efficient, uniform, consistent coating application. Large finishing service providers invest in automated conveyer carriers, numerous spray booths with rotary atomization bells, and control panels. Automating these processes and color changes conserves paint, reduces waste, improves quality, and fulfills the order accurately and quickly.<\/p>\n<p><strong>Specification guidelines for performance and durability<\/strong><\/p>\n<p>The Fenestration and Glazing Industry Alliance (FGIA) published three industry standard specifications for architectural coatings on aluminum extrusions. These documents were updated in 2022.<\/p>\n<ul>\n<li>AAMA 2603-22, <em>Voluntary Specification, Performance Requirements and Test Procedures <\/em><em>for Pigmented Organic Coatings on Aluminum Extrusions and Panels (with Coil Coating Appendix)<\/em>. AAMA 2603 provides the least stringent specification, pertaining to one-coat baked enamel coatings without a primer. It usually is reserved for interior applications where color retention, chalk, fade, and weatherability is not required.<\/li>\n<\/ul>\n<p><!--nextpage--><\/p>\n<ul>\n<li>\n<figure id=\"attachment_205361\" aria-describedby=\"caption-attachment-205361\" style=\"width: 248px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/MO-WashU-McKelvey_PaulRivera16_Apogee-Tubelite-Linetec.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-205361\" src=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/MO-WashU-McKelvey_PaulRivera16_Apogee-Tubelite-Linetec-200x300.jpg\" alt=\"For Washington University\u2019s James M. McKelvey, Sr. Hall, to safely remove the volatile organic compounds (VOCs) in the liquid paints\u2019 solvents, the finishing service provider used a 100 percent air capture system and regenerative thermal oxidizer.\" width=\"248\" height=\"372\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/MO-WashU-McKelvey_PaulRivera16_Apogee-Tubelite-Linetec-200x300.jpg 200w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/MO-WashU-McKelvey_PaulRivera16_Apogee-Tubelite-Linetec-333x500.jpg 333w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/MO-WashU-McKelvey_PaulRivera16_Apogee-Tubelite-Linetec.jpg 533w\" sizes=\"auto, (max-width: 248px) 100vw, 248px\" \/><\/a><figcaption id=\"caption-attachment-205361\" class=\"wp-caption-text\"><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\">For Washington University\u2019s James M. McKelvey, Sr. Hall, to safely remove the volatile organic compounds (VOCs) in the liquid paints\u2019 solvents, the finishing service provider used a 100 percent air capture system and regenerative thermal oxidizer.<\/span><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\"><em>Photo by Pa\u00fal Rivera\/courtesy Apogee, Linetec, Tubelite, and Wausau Window and Wall Systems. <\/em><\/span><\/figcaption><\/figure>\n<p>AAMA 2604-22, <em>Voluntary Specification, Performance Requirements and Test Procedures for High Performance Organic Coatings on Aluminum Extrusions and Panels (with Coil Coating Appendix)<\/em>. AAMA 2604 provides intermediate performance, pertaining to 50 percent PVDF resin-based, two-coat systems with a primer and color coat. The resulting finish offers good color and gloss retention, hardness, and abrasion resistance suitable for storefront, entrances, and other high-traffic areas.<\/li>\n<li>AAMA 2605-22, <em>Voluntary Specification, Performance <\/em><em>Requirements and Test Procedures for Superior Performing Organic Coatings on Aluminum Extrusions and Panels (with Coil Coating Appendix)<\/em>. AAMA 2605 provides the highest performance, pertaining to 70 percent PVDF resin-based coatings. This includes two-coat systems, and three- and four-coat systems for metallic and exotic colors that require a clear topcoat and sometimes, a barrier coat. The resulting finish offers outstanding color and gloss retention, hardness, and abrasion resistance, suitable for curtain wall and monumental architectural projects.<\/li>\n<\/ul>\n<p><strong>High performance PVDF coatings and warranty considerations<\/strong><\/p>\n<p>Finishes that meet AAMA 2605 exhibit exceptional durability and resistance to humidity, color change, chalking, and chemicals. They perform as specified when exposed to ultraviolet (UV) radiation, pollution, and weathering. The rigorous testing of these PVDF coatings includes more than 4,000 hours of accelerated exposure to salt spray. In addition, 70 percent PVDF painted aluminum samples have been placed on an outdoor test site in South Florida. These test panels are monitored under actual coastal conditions for years, even decades.<\/p>\n<p>The shape and machining of aluminum can affect how it responds to salt-spray in coastal areas. Issues are more likely to occur at grain lines and flaws in fabricated metal. Seams, hems, cut holes, and ends also are potentially vulnerable. For best results, ensure the metal is machined, bent, and shaped before it is finished.<\/p>\n<p>Once installed, any fabricated aluminum that holds moisture and prevents drainage also can create prolonged exposure to salinized solutions that may expedite corrosion. Be aware of concave components where water can collect, or insufficiently sized or blocked weepholes on curtain wall, storefront, and window systems.<\/p>\n<p>Finishes applied to meet AAMA 2605 should last several years beyond, and in some cases, beyond the warranty period. Warranties for finishes typically address color fading, chalking, adhesion, and gloss loss, but they do not mention corrosion. This is because the warranties are for the finish itself, not the underlying metal where corrosion could take place. PVDF 70 percent resin-based architectural coatings applied by an experienced finishing service provider can help protect fenestration products\u2019 architectural aluminum framing from corrosion, even if it is not explicitly stated in the warranty.<\/p>\n<p><strong>Care and maintenance<\/strong><\/p>\n<p>With an architectural-grade factory-applied coating, aluminum requires little maintenance to uphold its appearance and performance. Regular cleaning helps remove accumulated deposits from salt-spray, soil, and pollution.<\/p>\n<p>Usually, finished fenestration should only require a rinse with clean water, or at most, a rub with a soft cloth and mild soap solution. Specification professionals should inform building owners that strong alkaline or acidic cleaners and abrasive metal scrapers should be avoided, as they can damage the finish and expose the underlying aluminum to future salt spray. When a finish is compromised, the negative effects to the metal substrate may become significant within weeks.<\/p>\n<figure id=\"attachment_205360\" aria-describedby=\"caption-attachment-205360\" style=\"width: 354px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Linetec_NY-MacysBrooklyn_Winco-9652_JeffreyRosenberg.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-205360\" src=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Linetec_NY-MacysBrooklyn_Winco-9652_JeffreyRosenberg-300x200.jpg\" alt=\"Aluminum window framing and panning was specified in a key lime color to complement the refreshed, renovated, historic, four-story facade of Macy\u2019s in Brooklyn, New York.\" width=\"354\" height=\"236\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Linetec_NY-MacysBrooklyn_Winco-9652_JeffreyRosenberg-300x200.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Linetec_NY-MacysBrooklyn_Winco-9652_JeffreyRosenberg-500x333.jpg 500w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Linetec_NY-MacysBrooklyn_Winco-9652_JeffreyRosenberg-768x512.jpg 768w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/Linetec_NY-MacysBrooklyn_Winco-9652_JeffreyRosenberg.jpg 800w\" sizes=\"auto, (max-width: 354px) 100vw, 354px\" \/><\/a><figcaption id=\"caption-attachment-205360\" class=\"wp-caption-text\"><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\"> Aluminum window framing and panning was specified in a key lime color to complement the refreshed, renovated, historic, four-story facade of Macy\u2019s in Brooklyn, New York.<\/span><span style=\"font-size: 9pt; font-family: arial, helvetica, sans-serif;\"><em>Photo by Jeffrey Rosenberg Photography\/courtesy Winco Window Company and Linetec. <\/em><\/span><\/figcaption><\/figure>\n<p>For small scratches, touch-up paint may be used. Experienced finishing applicators retain the paint formulation of customers\u2019 orders and may be able to match the finish on the original material. Specialty colors, micas, metallics, textured finishes, and spatter coat may not be possible to match and could require replacement. Some factory finishing service providers also provide qualified field service, restoration, and repair teams to assist with projects in need of on-site attention or renovation.<\/p>\n<p>Specified and applied to meet AAMA 2605, 70 percent PVDF resin-based architectural finishes for aluminum-framed fenestration allow for nearly unlimited aesthetic options with the highest available performance, as well as a long service life.<\/p>\n<p><a href=\"https:\/\/www.constructionspecifier.com\/aluminum-fenestration-finishes-quiz\/\">Take our quiz!<\/a><\/p>\n<p class=\"Sidebar-Bold\"><strong><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-205372 alignleft\" src=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2023\/06\/0Linetec_TammySchroeder-f.jpg\" alt=\"\" width=\"90\" height=\"90\" \/>Author<\/strong><\/p>\n<p class=\"Sidebar-Bold\"><span style=\"letter-spacing: -.1pt;\">Tammy Schroeder, LEED green associate, is the director of marketing at Linetec, one of the largest independent architectural metal finishing companies in the U.S. With more than 20 years of experience, she serves as an industry <\/span>educator on high-quality, high-performance architectural finishing and services. Schroeder enjoys sharing her knowledge with architects, specifiers, and architectural product manufacturers working in commercial and residential building markets. Schroeder can be reached at tammy.schroeder@linetec.com.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Choosing finishes for commercial buildings\u2019 aluminum-framed vertical fenestration assemblies\u2014windows, curtain wall, storefront, and entrances\u2014often begins by selecting a color. Specialty coatings also can enhance the visual and tactile effects of the finished appearance.<\/p>\n","protected":false},"author":29853,"featured_media":205369,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[520,179,185,250,188,275],"tags":[7785,7515,1039,5428],"class_list":["post-205355","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-features","category-masterformat","category-05-00-00-metals","category-05-10-00-structural-metal-framing","category-08-00-00-openings","category-08-40-00-entrances-storefronts-and-curtain-walls","tag-aluminum-framing-systems","tag-articles","tag-fenestration","tag-paints-and-coatings","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum-framed fenestration: A guide to specifying paints and coatings - 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