Poly-Seal PE-801
Poly-Seal PE-801 is a single-sided modified butyl sealing tape constructed with 32–36 mils of butyl adhesive on a 2.0 mil black high-density water-resistant polyethylene (HDPE) backing, for a total thickness of 34–38 mils. Designed as a hip and ridge sealant for tile and roof applications, it delivers ≥10 lbs/pli peel adhesion, ≥700% elongation, and immediate aggressive grip with full bond within 24 hours. Asphalt-free and solvent-free, the tape provides leak-proof results across an operating range of −20°F to 180°F.
Key Properties
- Peel Adhesion: ≥10 lbs/pli
- Elongation: ≥700% (ASTM D1970)
- Tensile Strength: 4.5 lb/in (ASTM D1970)
- Operating Temperature: −20°F to 180°F
- Total Thickness: 34–38 mils (32–36 mils butyl / 2.0 mils HDPE backing)
- Bonding Time: Immediate aggressive grip; watertight after 1 hour; full bond within 24 hours
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Total Thickness | 34–38 mils | — |
| Adhesive Thickness | 32–36 mils | — |
| Backing / Carrier Thickness | 2.0 mils | — |
| Color | Black | — |
| Material / Substrate | Butyl / Polyethylene | — |
| Backing / Carrier | High density, water resistant polyethylene | — |
| Finish | Non-Gloss | — |
| Adhesive Type | Modified Butyl | — |
| Adhesive System | Permanent Adhesive | — |
| Adhesive Side | Single Sided | — |
Mechanical Properties
| Property | Value | Test Method |
| Tensile Strength | 4.5 lb/in | ASTM D1970 |
| Elongation | ≥700% | ASTM D1970 |
| Flexibility (Low-Temp) | Passes, no cracking | — |
Adhesion Properties
| Property | Value | Test Method |
| Peel Adhesion | ≥10 lbs/pli | — |
| Bonding Time | Immediate, aggressive grip; water tight after 1 hour set time; full bond within 24 hours | — |
Thermal & Environmental Properties
| Property | Value | Test Method |
| Operating Temperature | −20°F to 180°F | — |
| Recommended Application Temperature | 35°F to 110°F | — |
| Water Resistance | Excellent after set time | — |
| Mold and Mildew Resistant | Yes | — |
Shelf Life / Storage
| Property | Value | Test Method |
| Shelf Life | 24 months (unopened) | — |
| Recommended Storage Conditions | 35°F to 110°F | — |
- Hip and ridge sealant for tile and standard roofing applications
- Flashing tape and seam sealer for RV roofs and recreational vehicle assemblies
- Nail flange corner seals around windows and roof penetrations
- Underlayment and flashing tape for prime window installations
- Architectural roofing transitions where asphalt-free, non-staining sealants are required
Common industries: Roofing and construction, recreational vehicles, residential window installation, building envelope sealing.
Poly-Seal PE-801 is a heavy-mil modified butyl sealing tape engineered specifically for hip and ridge applications under tile and standard roofing systems. The construction pairs a 32–36 mil layer of modified butyl sealant with a 2.0 mil black HDPE film carrier in a non-gloss finish, yielding a robust 34–38 mil total profile suited for sealing roof transitions where dimensional stability and water tightness are critical.
The asphalt-free, solvent-free formulation means the tape will not bleed, melt, or stain at the application surface — an important consideration for residential and architectural roofing where appearance and clean installation matter.
Performance characteristics include immediate aggressive grip on contact, water-tight sealing within 1 hour of application, and full cure within 24 hours. Tensile strength is 4.5 lb/in and elongation exceeds 700% per ASTM D1970, supporting the dimensional movement that occurs in roofing systems through thermal cycling.
The tape passes low-temperature flexibility testing without cracking, exhibits excellent water resistance after set time, and is mold- and mildew-resistant. Operating temperature spans −20°F to 180°F, with a recommended application temperature window of 35°F to 110°F. Shelf life is 24 months unopened when stored at 35°F to 110°F.
Application requirements per the TDS: surfaces must be clean and dry, the tape must not be stretched during application, and the product is not repositionable. Do not apply where temperatures exceed 200°F, and do not use where acidic or alkaline chemicals are present (e.g., lab fume hoods, vents). No specific regulatory compliance standards are specified on the manufacturer’s TDS for this material.
What differentiates Poly-Seal PE-801 from other butyl sealing tapes?
PE-801 is positioned specifically for hip and ridge roofing applications, with the heaviest butyl thickness in the Poly-Seal series (32–36 mils versus 15–25 mils on the other variants). The HDPE backing provides water resistance and dimensional support without the asphalt content that can bleed or stain in residential applications. The combination of high butyl mass, non-staining backing, and ≥700% elongation makes it well-suited for the tile and roofing transitions where movement, water exposure, and long-term aesthetic integrity all matter.
Why is peel adhesion important when selecting this tape?
For roofing sealants, peel adhesion measures the resistance to separation under wind uplift, water penetration pressure, and thermal-cycling stress. The ≥10 lbs/pli value confirms strong substrate anchoring, while the immediate aggressive grip and water-tight performance within 1 hour matter for sealing during active weather conditions on a job site.
What is the operating temperature range for PE-801?
PE-801 has an operating temperature range of −20°F to 180°F, with a recommended application temperature of 35°F to 110°F. Do not apply where temperatures exceed 200°F.
Is PE-801 suitable for chemically exposed environments?
No — the TDS explicitly states the product is not to be used where acidic or alkaline chemicals are present (e.g., lab fume hoods, vents). The tape is also not repositionable, so positioning must be precise during application. No specific regulatory compliance standards are listed on the TDS for this material.
How should PE-801 be specified?
Specify product (Poly-Seal PE-801), thickness (34–38 mils total), backing (HDPE), color (Black), application surface, compliance requirements, dimensional tolerances, and finished format.
