4.7 stars | Trusted by 5,000+ Homeowners Sealing Their Attics
BEEST FullStop™ Attic Spray Foam Insulation Kit
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4.7 stars | Trusted by 5,000+ Homeowners Sealing Their Attics
R-Value 8.24
240 sq. ft. per kit
Built for First-Time Insulators
BEEST FullStop™ Attic Spray Foam Insulation Kit
You're Saving $110.00
Save $110.00
Insulate your attic yourself — no contractor, no $4,000 quote
Kit includes everything to seal an attic in a single weekend
Perfect for attic floors, kneewalls, gable ends, and rafters
Free Attic Insulation eBook
$19.99
FREE
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$29.99
FREE
1x Cleaner Cans
$19.99
FREE
Metal Foam Gun
$49.99
FREE
Safety Kit
$34.99
FREE
Estimated Delivery By:
1 Set of Free Gifts Per Order
10 Year Warranty
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American Owned
Product Details
Beest FullStop™ Spray Foam — Technical Specifications
Polyurethane-based, single-component spray foam.
Designed for high-density insulation and long-term thermal performance.
R-Value:
R-Value per Inch: 4.12
R-Value per 2": 8.24
High thermal resistance for consistent temperature control
Application & Coverage:
Recommended Spray Thickness: 2" (optimal for max R-Value).
Coverage (per 12 cans):
~240 sq. ft. at 1"
~120 sq. ft. at 2" (two 1" coats recommended).
Suitable for cavities, gaps, and uneven surfaces.
Cure & Expansion:
Full Cure Time: Approximately 6 hours
Expansion Rate: High — expands to fill and seal voids for an airtight, rigid structure
Adhesion & Substrate Compatibility:
Bonds effectively to wood, metal, concrete, drywall, and OSB
Engineered for both smooth and irregular surfaces
Operating & Application Conditions:
Recommended Application Temperature: 68–77°F (20–25°C)
Service Temperature Range: -40°F to +176°F
Maintains structural integrity across temperature variations
Appearance & Finish:
Cures to a hard, durable surface that can be trimmed or coated after curing.
Common Application Areas:
Attic Floors
Kneewalls
Gable Ends
Rafter Bays
Hatch Surrounds
HVAC & Plumbing Penetrations
Air Sealing
Draft Blocking
High R-Value
Whole-Home Efficiency
Air Sealing
Draft Blocking
High R-Value
Whole-Home Efficiency
Air Sealing
Draft Blocking
High R-Value
Whole-Home Efficiency
Air Sealing
Draft Blocking
High R-Value
Whole-Home Efficiency
3 Reasons FullStop Is The Smartest Attic Fix You'll Make
Cut Your Cooling Bill at the Source
The attic is the #1 source of conditioned-air loss in a typical home. Sealing it is the single highest-leverage fix in your entire HVAC system — and most homeowners feel it on the very next bill.
Cooler Upstairs Rooms — Without a New AC
Most homeowners report a 5–10°F drop in upper-floor rooms after sealing the attic envelope. The AC stops running all afternoon, the bedrooms finally cool down, and the system stops working overtime to chase a leak it can't catch.
Class A Fire Rated
Meets ASTM E84 with a flame spread index of 0 — the highest fire safety classification available. The same standard inspectors require for finished living space, so what's above your ceiling is held to the same bar as what's below it.
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10-Year-Warranty
Professional-Grade Attic Insulation
Everything you need to air-seal and insulate your attic correctly — without paying $4,000+ for a contractor or hauling a compressor up the ladder.
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10-Year-Warranty
Will spray-foaming my attic actually lower my energy bills?
Yes. Most homeowners notice a 5–10°F drop in upstairs rooms and a measurable reduction in their cooling bill once the attic is properly air-sealed. Heat infiltration through the attic is the #1 source of AC strain in a typical home.
Will the foam pull away or sag from rafters and joists over time?
No. Applied to clean, dry framing, BEEST FullStop™ cures into a rigid, permanent bond on wood, OSB, and drywall. It will not slump, settle, or sag like batts or blown-in.
How easy is it to insulate an attic myself?
An attic is one of the most DIY-friendly areas to spray. The kit includes the spray gun, safety gear, and clear instructions — no compressor, no special tools. Most homeowners complete a typical attic in a single weekend.
Will one kit cover my whole attic?
One kit covers ~240 sq. ft. at 1" or ~120 sq. ft. at the recommended 2" thickness. Measure your attic floor or roofline area and order accordingly — most full attics need 2–4 kits.
How long will attic insulation last?
Once cured, BEEST FullStop™ remains structurally stable for decades — no breaking down, no settling. One application is built to last the life of the home
Still Have Attic Questions?
Tell us about your attic — square footage, access, current insulation — and we'll size the right kit for you.
Contact Us
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Where Homeowners Use FullStop In The Attic
Attic Floor
Kneewall
Gable End
Rafter Bays
Hatch Surround
Recessed Light Boxes
Top Plate
Soffit Bay
Knee Braces
Vent Frames
Gable Vents
Attic Ladder Frame
Plumbing Stacks
HVAC Penetrations
Mechanical Chase
Attic Floor
Kneewall
Gable End
Rafter Bays
Hatch Surround
Recessed Light Boxes
Top Plate
Soffit Bay
Knee Braces
Vent Frames
Gable Vents
Attic Ladder Frame
Plumbing Stacks
HVAC Penetrations
Mechanical Chase
Insulate Your Attic In Three Simple Steps.
From rafters to rim plate, BEEST FullStop™ seals the attic envelope — no contractor, no compressor, no second weekend.
1
Prep the Attic
Clear loose insulation, debris, and stored items from the work zone. Lightly mist framing for adhesion. Wear the included suit, gloves, and goggles.
2
Spray the Attic
Shake cans and attach the gun. Lay even passes across rafters, joists, and rim plate. Build to a 2" depth in two coats for maximum R-value.
3
Cure and Move On
Allow ~6 hours to fully cure. Trim any oversized expansion at the rim plate or hatch surround for a clean attic finish.
Smart, Long-Lasting Attic Insulation
High-performance foam designed to seal attic bypasses, lock down heat transfer, and last the life of the home.
94%
Felt a more even, cooler upstairs after sealing the attic envelope.
89%
Completed an attic project without contractor help.
91%
Reported a noticeable temperature drop in upper-floor rooms.
87%
Would recommend BEEST FullStop for attic projects.
Low Expansion Thermal Foam
Strong Attic Seal
Moisture & Air Barrier
How FullStop Beats Standard Attic Insulation
High-performance foam that locks down attic heat transfer, boosts whole-home efficiency, and lasts for the life of the house.
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Performance
Energy Savings
Material Quality
Air Sealing
Moisture Protection
High-R-value thermal insulation (R-8.24 at 2")
Lower R-value, settles over time
Closed-cell, rigid, won't slump or sag in rafter bays
Seals attic bypasses, top plates, and penetrations
Acts as vapor & moisture barrier - protects framing from condensation
Standard Batts / Blown-In
Lower R-value, settles over time
AC still escapes through unsealed bypasses
Sags, settles, gets compacted by air
Leaves bypasses unsealed
Needs separate vapor barrier
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Why This Outperforms Standard Attic Insulation
Remove the inconsistency, settling, and missed bypasses that drag down most attic insulation.
Consistent Application
Maintains steady spray across rafter bays so attic coverage stays even, not patchy.
No Mid-Job Failures
Prevents the strap leaks and pressure loss that typically force a second weekend on attic jobs.
Built for Repeat Use
Built for the homeowner who'll seal the attic, then move on to walls, basement, or crawl space.
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Reinforced
Rigid Core
Helps Minimize Roof & Rain Noise
All-in-One Attic Insulation
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