The TopShield StormGear Synthetic Underlayment 48” x 250’ is a synthetic underlayment for jobs that require TopShield model/MPN MFXTTO in the RL sell unit. StormGear Synthetic Underlayment by TopShield stands out as an innovative roofing solution meticulously crafted by roofers for roofers.

Key Specs

• Brand: TopShield
• Model / MPN: MFXTTO
• SKU: TOPMFXTTO
• Sell unit: RL
• Product type: Synthetic Underlayment
• Size / color: 48” x 250’
• Category: Residential Roofing | Residential Roofing/Underlayment | Residential Roofing/Underlayment/Synthetic Underlayment | Underlayment | Underlayment/Synthetic Underlayment
• Coverage / unit: 10 squares (1000 sq ft) per roll

Key Features

• 100% Recyclable
• 180 Day UV protection
• Impervious to mold growth

Coverage & How Much You Need

This item is listed as 10 squares (1000 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 synthetic underlayment, pack size, color, membrane/system family, or installation condition without checking the manufacturer instructions.

FAQs

What exactly am I ordering?

TopShield StormGear Synthetic Underlayment 48” x 250’, sold as RL, with SKU TOPMFXTTO and manufacturer model/MPN MFXTTO.

What model or part number should I match?

Match model/MPN MFXTTO and confirm the brand is TopShield. 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 10 squares (1000 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 TopShield model/MPN MFXTTO, SKU TOPMFXTTO, and the RL sell unit match the project requirement. It is best treated as an exact-match material selection, not a generic substitute.