[Information] Explanation of Waterproof Tape for Residential Use - Differences Between Butyl and Acrylic
This explains the importance of waterproof tape in residential construction and the differences and characteristics of typical butyl and acrylic.
The reliability of rainwater management is a crucial factor that influences construction quality. Particularly in recent years, high airtightness and high thermal insulation homes have revealed risks of rainwater intrusion that traditional ventilation structures cannot adequately address, making the selection of waterproof tape and the precision of its application increasingly important. This document explains the role and performance requirements that waterproof tape should fulfill, based on actual data on waterproofing troubles, and presents a framework for selecting the optimal products through a comparison of the characteristics of the mainstream "butyl-based" and "acrylic-based" tapes. Additionally, we introduce the advantages from a practical perspective, incorporating the structural and performance verification results of Nitto's newly launched all-weather waterproof tape series. We encourage you to review this document for insights that can help reduce the risk of rainwater intrusion and support the long-term performance of buildings.
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basic information
**Types and Characteristics of Waterproof Tapes** There are two main types of waterproof sealing tapes available in the market. **"Butyl Tape"** Composition: Support material (non-woven fabric) + Reinforcing film + Butyl rubber-based adhesive + Release liner - Long-lasting adhesive strength - Difficult to tear - Excellent gap-following ability - Adheres well to rough surfaces → High waterproof performance **"Acrylic Tape"** Composition: Poly-cross base material + Acrylic-based adhesive - High initial adhesion - Good hand-tearability - Less likely to get dirty → High workability Butyl waterproof tape has self-fusing properties, high adhesive strength, and softness, allowing it to conform to irregularities and providing a solid long-term waterproof effect. Acrylic waterproof tape is easy to tear by hand, less prone to getting dirty, and easy to apply, making it highly workable. Additionally, it offers excellent cost performance. Around screws near window frames, gaps can form, causing the tape to lift and potentially creating pathways for water intrusion. Therefore, butyl tape, which closely follows irregularities, is recommended. *For more details, explanatory materials and catalogs regarding waterproof tapes are available in the PDF catalog.*
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Applications/Examples of results
●Window surrounding waterproofing ●Waterproofing and air sealing of waterproof sheets and board joints ●Indoor air sealing ●Waterproofing and air sealing of window sill corners, etc. ●Fixing of moisture-permeable prevention sheets and insulation materials ●Secondary waterproofing during the installation of window frames and sashes
Line up（3）
| Model number | overview |
|---|---|
| All-Day Tape No. 6924-NL | (Double-sided adhesive type) Exhibits high adhesive strength on non-woven moisture-permeable waterproof sheets in low-temperature environments. (Compared to our products) Even in summer, it has less stickiness and excellent workability. (Compared to our products) It conforms to uneven surfaces and adheres firmly. |
| All-Day Tape No. 6922-NL | (Double-sided strong adhesive type) Demonstrates stable adhesive strength across various temperature ranges. In low-temperature ranges, it has better adhesive strength than conventional products. It conforms to uneven surfaces and adheres firmly. |
| All-Day Tape No. 6931-NL | (Single-sided adhesive type) In low-temperature ranges, it has better adhesive strength than conventional products. Even in summer, it has less stickiness and excellent workability. |
catalog（7）
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Company information
Our company is responsible for the living environment business within the Nitto Group and also engages in important business activities that broadly relate to the socio-economy, such as MRO and infrastructure businesses. We offer a wide range of products from over 400 related manufacturers and functional processed products, and we possess the know-how to quickly respond by transforming "customer voices" into tangible solutions. "Company Overview" Company Name: Nitto L Materials Corporation Established: June 1, 1979 (formerly known as L Nissho Co., Ltd., renamed in 2015) Capital: 800 million yen (100% owned by Nitto Denko Corporation) Annual Sales: 12.2 billion yen (fiscal year 2023) Number of Employees: 100