How to Seal Rim Joists with Great Stuff Pro™ Gaps and Cracks

In this quick how-to video, learn the basics of sealing rim joists around framing using Great Stuff Pro™ Gaps & Cracks products to keep unwanted air out of homes.
Rim joists, also known as band joists and sill plates, are often overlooked and under-insulated areas in a house. These spaces are notorious for air leakage and pest infiltration, so it's essential to seal all cracks and create a vapor barrier before insulating the area.
Watch this video and learn more about using Great Stuff™ Gaps & Cracks with PRO Dispensing Gun.
*****How-To Steps*****
1. Make sure all flame sources are extinguished.
2. Prep area by removing dust and debris.
3. Shake can for 60 seconds.
4. Install the dispenser to the product as per directed on label.
5. Adjust the flow control knob to achieve desired flow.
6. Press the trigger to fill the gun with foam, then dispense.
7. Practice with a dry run.
8. Insert dispensing into the joist and pull the trigger.
9. Close the flow control knob to keep any foam in the dispensing gun from curing.
10. Store the foam upright until your next use.
11. Leave Great Stuff ProTM Foam attached to the dispensing gun and you’ll be able to reuse it for up to 30 days.
****Benefits of Using the Great Stuff™ Pro Dispensing Gun****
Precise Control: Flow-control mechanism dispenses beads from 1/8” to 3”
Durability: Lightweight, high-strength aluminum body with a metal trigger
Versatility: Works with all GREAT STUFF PRO™ cans
Less mess: No-drip dispensing prevents foam from expanding and creating a mess after use
*****Where to Buy*****
Find Great Stuff Pro™ products at a retailer near you
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*****Relevant Products*****
Great Stuff Pro™ Gaps & Cracks
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Great Stuff™ Pro 14 Dispensing Gun
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Great Stuff™ Foam Cleaner
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[@kennyfedor7484]

I’ve been working on this the past two days. I would strongly recommend getting a box of disposable gloves so you can change them frequently, this stuff is messy, especially if you aren’t doing an extra large/open rim joist like they do in video

[@tgaming1893]

when you skip over quickly turn flames off you mean candles or water heater?

[@ShakzT]

Hey guys, schoolboy question from me.
Doesn’t something like this raise concern?
Say you have below you have a timber floor, and between the sub floor and downstairs ceiling plasterboard, between the cavity you already have rock wool insulation, and now you are sealing the gaps around the joist-to-plasterboard…
Shouldn’t you leave some gaps for airflow?

[@user-qz9gq5pt9t]

My roommate and I are senior citizens trying to bug and weatherproof our house and on limited income. We bought your product recommended to us a a GREAT product....no one told us we had to have your stupid special gun which cost over $60 dollars! What a rip off

[@Robalo450]

Can you use the regular gaps and cracks for the same thing?