What Is PIR Insulation Board and Why Should You Choose It?

What is PIR insulation and why is it popular?

PIR insulation boards are one of the most efficient thermal insulation materials available today. PIR boards are commonly faced with aluminum foil, fiberglass mesh, or kraft paper, which enhances their mechanical and thermal performance. PIR insulation forms a closed-cell structure, Known for their low thermal conductivity and excellent moisture resistance, PIR boards are widely used in walls, floors, roofs, and HVAC ductwork.

In this guide, you’ll explore their key benefits, real-world applications, and how to install them efficiently. Whether you’re a builder, contractor, or project planner, understanding PIR insulation is essential for energy-efficient building solutions.

GFI PU PIR celotex wall foam board for building insulation

PIR 有哪些优点？

除了最大限度地减少暖空气或热空气的损失外，PIR 隔热材料还具有其他几个优点：

成本效益： 尽管与发泡或挤塑聚苯乙烯板相比，PIR 板并不是最便宜的选择，但它们每年最多可减少 30% 的能源成本。这意味着它们的初始成本可以很快收回，通常在几天之内。

能源效率： 通过将热量保留在室内，PIR 隔热材料可以提高家庭的能源效率，有助于应对气候变化和全球变暖。

季节性多功能性： 除了在冬季保持室内温度外，PIR 板还能通过反射热量帮助在夏季保持室内凉爽。这可增强建筑物全年的可持续性和能源效率。

节省空间： 与矿棉保温材料相比，PIR 板厚度较小，保温效果更佳，节省了宝贵的地面空间。这对于内墙保温尤其有利。

防潮： PIR 板上的箔面不仅可以反射热量、节省能源，还可以作为防潮层，保护板材和应用免受湿气侵入。

耐用性： PIR 板具有很强的防潮性，不会随着时间的推移而下垂，从而确保其长期保持其隔热性能。这使得 PIR 隔热材料成为满足隔热需求的可靠、长期解决方案。

pir insulation plaster board

如何安装 PIR 板？

可以使用点涂法安装 PIR 隔热层。以下是分步指南：

标记墙： 在将安装 PIR 板的天花板和地板上做标记。标记应为板的厚度加上 10 毫米。例如，如果板厚 50 毫米，则在 60 毫米处做标记。此外，在墙上标记板的中心，并每隔 1200 毫米放置水平标记以识别板的边缘。

切割木板： 使用手锯将木板切割成合适的尺寸。确保木板比墙高短 15 毫米。

准备粘合剂： 根据制造商的说明混合石膏板粘合剂。在天花板、墙壁和任何开口（如窗户和门）的边缘涂抹一层连续的粘合剂。

涂抹粘合剂： 将粘合剂以 50-75 毫米的间隔轻拍在墙上，每条长 250 毫米。每块 PIR 板需要三排垂直粘合剂，一排在中间，两边各两排，距离边缘至少 25 毫米。

安装板： 将 PIR 板背面压在粘合剂上，同时用石膏板垫块支撑它们。将板与天花板和地板标记对齐，然后将其敲入到位。

固定电路板： 使用板升降器将 PIR 板紧贴天花板。使用石膏板封堵器将板固定到位后，移除升降器。

密封接头： 为了防止热桥，将所有板紧密贴合在一起，并用箔胶带固定边缘。

安装技术可能因绝缘材料的位置和具体用途而异。

FAQs About PIR Insulation Board

Q1: What is PIR insulation used for?
PIR boards are used in cavity walls, floors, pitched roofs, flat roofs, ceilings, HVAC ducts, and cold storage facilities.

Q2: Is PIR insulation better than EPS or XPS?
Yes. PIR typically has a lower thermal conductivity (around 0.022 W/m·K) compared to EPS and XPS, making it more energy-efficient for the same thickness.

Q3: Is PIR board waterproof?
PIR insulation boards have a closed-cell structure and are often foil-faced, providing excellent moisture resistance. However, they are not 100% waterproof if submerged.

Q4: What thickness of PIR board do I need?
Common thicknesses range from 25mm to 100mm. The choice depends on your building regulations and desired U-value. For walls, 50mm–75mm is typical.

Q5: How is PIR insulation installed?
PIR boards can be installed using mechanical fixings or adhesive (e.g., dot-and-dab method). Tightly sealing joints with foil tape is recommended to avoid thermal bridging.