Understanding Roofing Cant Strip: Installation and Benefits: A Quick Guide to Installing Roofing Cant Strips EffectivelySarah ThompsonSep 09, 2025Table of ContentsTips 1:FAQTable of ContentsTips 1FAQFree Smart Home PlannerAI-Powered smart home design software 2025Home Design for FreeRoofing cant strips are an often overlooked but essential component in flat and low-slope roofing systems. These triangular-shaped wedges, typically made from wood fiberboard, perlite, or wood, are installed at the intersection where the horizontal roof deck meets vertical surfaces such as parapet walls or curbs. Their primary purpose is to provide a gradual transition, reducing the sharp 90-degree angle that can create stress points in both roofing membranes and insulation.When installing a cant strip, precise placement is key. The strip is usually set along the edge before the primary roofing membrane is applied. Its angled surface allows roofing materials to bend smoothly from the roof plane up the wall, minimizing the risk of cracking or splitting at these critical junctions. This transition not only extends the membrane’s lifespan but also reinforces waterproofing by reducing the possibility of ponding water or debris accumulation at the base of vertical surfaces.The benefits of using a roofing cant strip are both functional and protective. By softening transitions and supporting the roofing membrane, cant strips help prevent tears and punctures, particularly in high-movement areas affected by temperature changes and building settling. Additionally, proper use can enhance the aesthetic finish of a commercial or residential roof, especially when the installation details are visible or subject to inspection.From a designer's point of view, ensuring durability and longevity in key architectural junctions like the roof-to-wall connection is vital. In any comprehensive building project, whether it's a new construction or a renovation, attention to these small-yet-important details allows us to maximize both performance and long-term value. For those involved in the broader scope of architectural planning—especially when working with complex roof plans—using specialized tools like a 2D floor planner can assist in visualizing and designing these critical transitions before installation, leading to smoother project execution and fewer on-site surprises.Tips 1:Always pair roofing cant strips with compatible roofing membranes and adhesive systems. Some materials may not bond well with certain strip compositions, so check manufacturer guidelines before installation. Additionally, pre-cut cant strips to fit curves or corners in advance to ensure seamless, watertight covers in intricate areas.FAQQ: What is the main purpose of a roofing cant strip?A: Its main function is to create a smooth transition between horizontal and vertical surfaces, reducing stress points in roofing membranes and improving water drainage.Q: What materials are commonly used to make cant strips?A: Cant strips are typically made from wood fiberboard, wood, or perlite.Q: Is it essential to use cant strips in all roofing systems?A: They are especially critical in flat and low-slope commercial roofs or anywhere a waterproof membrane transitions from a horizontal to a vertical plane.Q: How do cant strips benefit roof waterproofing?A: By easing membrane bending, cant strips help prevent cracking or tearing, which could lead to leaks.Q: Can I install cant strips myself?A: While possible, professional installation is recommended to ensure proper placement and adherence, safeguarding your roof's longevity.Home Design for FreePlease check with customer service before testing new feature.