Temperature Changes How Materials Behave Vinyl siding is designed for exterior weather. But like many plastics, it becomes less flexible when temperatures become extremely cold. That means an impact that might only flex a warm panel can be more likely to crack a very cold one. What Can Cause Winter Impact Damage? Examples include: Snow
WHY IS VINYL SIDING MORE VULNERABLE TO IMPACT IN VERY COLD WEATHER? Read More »
Why Is the Door Harder to Close Only in the Afternoon? Direct sun can heat the exterior surface of a door while the inside face remains much cooler. That temperature difference can create temporary thermal movement. On some doors, this may appear as: Slight bowing Changed weatherstrip contact Temporary latch difficulty Why Does Colour Matter?
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What Is the Bar Between Two Windows? Sometimes what looks like one giant window is actually several separate units joined together. The connection between those units may involve a: Mullion. Pella describes mullions as components used to join windows together into larger combinations. Why Join Separate Units? Homeowners may want: Larger glass compositions Different operating
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The Glass May Look the Same. The Installation Can Be Completely Different. Two common frame configurations are: Nail fin Block frame Pella distinguishes these as different window-installation systems. What Is a Nail-Fin Window? A flange extends around the exterior window frame. That flange is attached to the wall framing or sheathing and integrated with the
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Why Can’t You Wipe the Fog Away? Because the moisture is not on a surface you can reach. Modern insulated windows typically use multiple panes with a sealed space between them. When moisture appears inside that sealed space, the insulated glass unit may have lost its seal. Pella specifically distinguishes condensation between glass panes from
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How Do You Know the Insulation Is Even? Loose-fill insulation can create a smooth-looking surface. But one area might be: 14 inches deep while another is only: 8 inches. That is where depth markers help. DOE attic-insulation guidance recommends checking blown-insulation depth during installation to verify even coverage and the intended installed thickness. What Are
WHY DO INSTALLERS USE INSULATION DEPTH MARKERS? Read More »
Both Can Be Blown Into an Attic ENERGY STAR lists both: Cellulose Fibreglass as common loose-fill materials for unfinished attic floors and difficult-to-reach areas. But they are not the same material. What Is Cellulose? Cellulose insulation is primarily fibre-based material made largely from recycled paper products and treated for appropriate building use. What Is Fibreglass
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Underlayment Lives in a Tough Environment Under metal roofing, the hidden underlayment can experience substantial heat. That is why products specifically rated for high-temperature roofing applications exist. Polyglass, for example, markets high-temperature self-adhered underlayment specifically for steel, aluminum, copper, and other high-temperature roof coverings. Why Not Use Any Underlayment? Products have different: Temperature ratings Adhesives
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Not Every Metal Should Touch Every Other Metal When certain different metals contact each other in the presence of moisture, an electrochemical reaction can accelerate corrosion. This is known as: Galvanic corrosion. The Metal Construction Association specifically warns that incompatible dissimilar metals and certain fasteners can create corrosion problems in roofing systems. Where Can This
WHAT IS GALVANIC CORROSION ON A METAL ROOF? Read More »
Standing-Seam Panels Need to Move Long metal panels change length as temperatures change. The roof attachment system has to account for that movement. What Is a Fixed Clip? A fixed clip secures the panel without built-in sliding movement. It may be appropriate for certain: Panel lengths Roof systems Designs What Is a Floating Clip? A
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