Grace Ice & Water Shield HT Roofing Underlayment 3′ x 66.6′

The Grace Ice & Water Shield HT Roofing Underlayment 3′ x 66.6′ is a ice & water underlayment for jobs that require Grace model/MPN 693181 in the RL sell unit. GRACE ICE & WATER SHIELD HT high temperature self-adhered roofing underlayment is a premier membrane designed to deliver premium in place performance for high temperature applications.

Key Specs

• Brand: Grace
• Model / MPN: 693181
• SKU: GRAHTIWS2
• Sell unit: RL
• Product type: Ice & Water Underlayment
• Size / color: 3′ x 66-2/3′
• Category: Residential Roofing | Residential Roofing/Underlayment | Residential Roofing/Underlayment/Ice & Water Underlayment | Underlayment | Underlayment/Ice & Water Underlayment
• Coverage / unit: 2 squares (200 sq ft) per roll

Key Features

• Designed to withstand high temperature applications, up to 260 deg F
• The rubberized asphalt layer in Grace Ice and Water Shield HT membrane seals around roofing nails and other fasteners, resisting leakage caused by water back-up behind ice dams or wind driven rain
• The self-adhered membrane bonds firmly to the roof deck without supplemental heat or special adhesives
• Can be left exposed for up to 120 days before installing final roof covering

Coverage & How Much You Need

This item is listed as 2 squares (200 sq ft) per roll. Use the project takeoff, manufacturer installation instructions, and expected waste/overlap to confirm the order quantity.

Compatibility / Fitment

Use this item only when the brand, model/MPN, size/color, sell unit, and system type match the project specification. Do not substitute it for a different ice & water underlayment, pack size, color, membrane/system family, or installation condition without checking the manufacturer instructions.

FAQs

What exactly am I ordering?

Grace Ice & Water Shield HT Roofing Underlayment 3′ x 66.6′, sold as RL, with SKU GRAHTIWS2 and manufacturer model/MPN 693181.

What model or part number should I match?

Match model/MPN 693181 and confirm the brand is Grace. If the job spec lists a different model, size, color, or system family, hold for review.

What unit is the price based on?

This listing is built around the RL sell unit. Confirm the unit before comparing price, quantity, or coverage.

How do I estimate quantity?

Use 2 squares (200 sq ft) per roll, then add waste or overlap per the manufacturer instructions and the project design.

What should be checked before purchase?

Confirm the model/MPN, sell unit, size/color, jobsite condition, compatible system components, and any manufacturer installation limits before approving the order.

Roofing and exterior-envelope work can involve fall hazards, weather exposure, fumes, adhesives, and system-specific installation requirements; follow the manufacturer instructions, OSHA-safe work practices, and local code or use a qualified contractor.

Product Expert Notes

Choose this item when Grace model/MPN 693181, SKU GRAHTIWS2, and the RL sell unit match the project requirement. It is best treated as an exact-match material selection, not a generic substitute.