Great Stuff Pro 187273 Window & Door Foam Sealant, Low Pressure, 20 Oz

Great Stuff Pro Window & Door Foam Sealant is a low-pressure expanding foam designed to seal gaps around windows and doors where they meet the rough opening. This polyurethane-based sealant creates an airtight, water-resistant bond that stops drafts, prevents water infiltration, and blocks pathways where insects can enter your home. A single 20 oz can typically handles gaps on 15–18 standard-sized windows, making it an economical choice for weatherizing multiple openings.

The low-pressure formulation is engineered to expand gently without bowing or bending window and door frames, a critical advantage over standard spray foams. The sealant forms a flexible, durable bond to vinyl, wood, and metal surfaces. Once applied, it becomes tack-free in just 5 to 10 minutes, allowing you to trim excess foam within one hour. Full cure takes 12 hours. If you need to pause mid-job, the foam remains workable for up to 30 days, so you can finish sealing later without waste.

Features and Benefits

• Low-Pressure Formula: Expands gently to fill gaps without distorting window or door frames, protecting your installation.
• Quick Tack-Free Time: Becomes tack-free in 5 to 10 minutes, so you can trim and move on to the next opening fast.
• Durable Waterproof Seal: Forms an airtight, water-resistant bond to vinyl, wood, and metal; the foam skin repels water and blocks drafts and pest entry.
• Long Workability Window: Stays usable for up to 30 days after opening, letting you complete multiple projects without dried-out product.
• Excellent Coverage: One 20 oz can seals approximately 15–18 standard windows, delivering strong value for whole-home weatherization.
• Trimmable Within One Hour: Excess foam can be trimmed within one hour of application for a clean finish.

Specifications

• Brand: Great Stuff (Dow)
• Model: 187273
• Size: 20 oz can
• Color: Yellow
• Type: Low-pressure expanding polyurethane foam sealant
• Tack-Free Time: 5–10 minutes
• Trim Time: Within 1 hour
• Full Cure: 12 hours
• Surface Compatibility: Vinyl, wood, and metal
• UL Classified
• Application: Requires Pro Gun Applicator (sold separately)

How to Use

This product must be applied with a Great Stuff Pro Series Dispensing Gun, which is sold separately. Insert the 20 oz can into the gun, apply to gaps around window and door frames, and allow 5–10 minutes for tack-free set. Trim excess foam within one hour if desired. The sealant reaches full cure in 12 hours.