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LP® TopNotch 350 Durable Sub-Flooring

LP Building Solutions

LP® TopNotch 350 Durable Sub-Flooring

Elevate structural stability

Recognized as carbon negative by ASTM in 2023
Available performance categories from 19/32 to 1-1/8*
Can be used for residential and light commercial applications
LP TopNotch Sub-Flooring panels are certified by the APA

Specification

Features and Benefits
Performance
- Incredible strength, stiffness and moisture resistance.
Easy Installation
- Self-spacing tongue and groove design speeds installation.
Innovation
- Designed for optimum moisture resistance.
RainChannel^® Technology
- Unique RainChannel notch system to help drain rainwater away during construction.

Technical specification

Unique ref.lp-topnotch
Product familyBuilding materials
Product groupSmartSide®
TypeObject (single object)
Date of publishing2025-12-06
Edition number1

Links

Product urlhttps://lpcorp.com/products/panels-sheathing/sub-flooring
Installation instructionshttps://assets.ctfassets.net/89s5b832f23c/5rsFuq4s06QEOvEF6FPoHu/a911125b6db177222177114d692694c8/LP_TopNotch_-_Installation_Instructions
Technical descriptionhttps://assets.ctfassets.net/89s5b832f23c/1qcseWF2RrLR8NKqSkGOuv/9f47e231f8d18a215462c3f94cda4d1b/LP_TopNotch_350_-_Sales_Sheet

Related

Material mainWood
Designed inUnited States
Manufactured inUnited States

Classification

BIMobject CategoryFlooring - Underlay
UNSPSC nameSiding and exterior wall materials
UNSPSC code301518
CSI MasterFormat 2014 Code09 74 13
CSI MasterFormat 2014 TitleWood Wall Coverings
OmniClass Number23-13 37 13
OmniClass TitleExterior Wall Cladding
CSI UniFormat II CodeB2010
CSI UniFormat II TitleExterior Walls

Region availability

South America	North America
Brazil	United States
Chile

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