LP TechShield radiant barrier sheathing is designed to enhance energy efficiency by reducing attic temperatures. The product, identified as a RIMA verified product US-009-50, functions by blocking radiant heat transfer within the roof structure. Proper installation is crucial to realizing the intended benefits, particularly when used in conjunction with metal roofing systems. This article details installation procedures and considerations based on available documentation.
Radiant Barrier Technology and Benefits
LP TechShield utilizes a radiant barrier to reduce heat transfer. According to product information, the sheathing can reduce attic temperatures by up to 30°F, contributing to lower energy consumption and improved home comfort. The core principle involves reflecting radiant heat, preventing it from being emitted into the attic space. This is particularly effective in warmer climates and can lead to significant savings on cooling costs.
Sheathing Installation: General Guidelines
Several key steps are outlined for the correct installation of LP TechShield panels. Initial assessment of the roof structure is paramount. Uniform rafter alignment must be verified before commencing installation. The appropriate sheathing thickness should be selected based on the required on-center rafter spacing. Adequate roof ventilation, in accordance with local building codes, is also essential.
Panel spacing should be 1/8" on both ends and edges. The panels themselves must be installed with the foil side facing down, toward the attic air space. A minimum 3/4" air space is required between the foil surface and any roofing material above it. This air gap is critical for the radiant barrier to function effectively.
Fastening procedures also dictate performance. Panels should be fastened a minimum of 6" on center at supported panel ends and edges, and 12" on center at intermediate supports. 8d nails are recommended for this purpose.
Installation with Metal Roofing
Specific considerations apply when installing LP TechShield in conjunction with metal roofing. The documentation explicitly states that LP TechShield works effectively with metal roofs, provided installation instructions are followed. Maintaining the 3/4" air space between the foil surface of the LP TechShield radiant barrier and the metal roofing is particularly important in these applications. Allowing the sheathing to adjust to atmospheric conditions before metal roofing installation is also recommended. Roofing manufacturers’ application instructions should always be followed in addition to LP TechShield guidelines.
Moisture Protection and Weather Exposure
Protecting the LP TechShield panels from moisture both before and during installation is vital. Once the panels are installed, it is recommended to cover them as soon as possible with shingle underlayment or 30# roofing felt. This protects the panels from exposure to adverse weather conditions. The documentation emphasizes the need to minimize exposure to moisture to maintain the integrity and performance of the radiant barrier.
Trademark and Product Identification
All installed panels should have the APA and LP TechShield sheathing trademarks facing down. This ensures proper product identification and orientation during and after installation. The product is a registered trademark of Louisiana-Pacific Corporation.
Conclusion
LP TechShield radiant barrier sheathing offers a means of improving energy efficiency by reducing heat transfer in roof systems. Successful implementation relies on adherence to specific installation guidelines, including proper panel orientation, adequate air space, secure fastening, and moisture protection. When used with metal roofing, maintaining the recommended air gap is particularly important. Following these guidelines, and adhering to local building codes, will maximize the benefits of this radiant barrier technology.
Sources
The provided source material is insufficient to produce a 2000-word article. Below is a factual summary based on available data.