LP FlameBlock sheathing is presented as a structural solution for both single-family and multi-family construction projects. Designed for interior and exterior wall assemblies, as well as roof decks, the product aims to meet fire code requirements and enhance home protection. The panels utilize a proprietary coating called Pyrotite, a fiberglass-reinforced magnesium oxide cement, to slow the spread of flames and provide burn-through resistance. LP FlameBlock is available in various thicknesses and dimensions to accommodate diverse project needs.
Fire Resistance and Code Compliance
The primary function of LP FlameBlock is to improve fire resistance in building construction. The documentation indicates the panels are designed for use in one-hour and two-hour fire-rated wall assemblies and roof deck applications. The non-combustible Pyrotite coating is a key component in achieving this fire resistance. The product is described as having a Class A fire rating and being code compliant, though specific code references are not provided in the available documentation. In the event of a fire, the Pyrotite coating releases contained water, which is intended to reduce flames and slow the progression of the fire.
Pyrotite Coating Technology
Pyrotite is identified as a proprietary technology developed by LP. It consists of fiberglass embedded in magnesium oxide cement. This coating is applied to one or both sides of the OSB panel, depending on the specific application requirements. The documentation highlights the coating’s role in both flame spread technology and burn-through resistance. The release of water from the Pyrotite during a fire event is a central mechanism for its fire-retardant properties. The coating is also described as weather-resistant, contributing to the overall durability of the panel.
Structural and Installation Benefits
Beyond fire resistance, LP FlameBlock offers structural benefits and aims to streamline the construction process. The panels are engineered to provide design flexibility, potentially allowing for greater architectural freedom. The product is designed to reduce construction time and labor costs, in part by eliminating the need for additional layers of gypsum board in certain applications. The structural integrity of the panel itself contributes to the overall building strength.
Product Specifications and Dimensions
LP FlameBlock is available in several configurations, as detailed in the provided documentation. The following table summarizes the available dimensions and the number of pieces per unit:
- 7/16" x 4' x 8' FlameBlock OSB | 66 pieces per unit
- 7/16" x 4' x 9' FlameBlock OSB | 70 pieces per unit
- 7/16" x 4' x 10' FlameBlock OSB | 70 pieces per unit
- 15/32" x 4' x 8' FlameBlock OSB | 60 pieces per unit
- 15/32" x 4' x 9' FlameBlock OSB | 64 pieces per unit
- 15/32" x 4' x 10' FlameBlock OSB | 64 pieces per unit
- 23/32" x 4' x 8' FlameBlock OSB | 42 pieces per unit
- 15/32" x 4' x 8' 2SD FlameBlock OSB | 45 pieces per unit
- 15/32" x 4' x 9' 2SD FlameBlock OSB | 49 pieces per unit
- 15/32" x 4' x 10' 2SD FlameBlock OSB | 49 pieces per unit
The "2SD" designation likely refers to a specific application or coating variation, but further details are not provided in the documentation. The availability of Struc 1 FlameBlock is noted specifically at the Cloverdale, CA location.
Warranty Information
LP FlameBlock is backed by a 20-year limited transferable warranty. The documentation does not provide details regarding the specific terms and conditions of this warranty, but it indicates that the warranty can be transferred to subsequent property owners.
Environmental Considerations
The documentation states that LP FlameBlock has a negative carbon footprint. This suggests the manufacturing process or the material composition results in a net reduction of carbon dioxide emissions. However, no further details are provided to quantify this claim or explain the methodology used to determine the carbon footprint.
Conclusion
LP FlameBlock sheathing is presented as a fire-resistant building material designed for use in both residential and light commercial construction. Its key features include the proprietary Pyrotite coating, code compliance, structural benefits, and a 20-year warranty. The product aims to enhance fire safety while potentially reducing construction time and costs. The available documentation provides specific dimensions and piece counts per unit, allowing for accurate material estimation. The claim of a negative carbon footprint suggests an environmental benefit, though further details are not provided.