16 oz. Pestblock Insulating Foam Sealant with Quick Stop Straw
- Quick-stop straw technology stops messy foam drips
- Specially formulated for blocking ants, bees, mice and more
- Resists pests through an airtight seal
- See More Details
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Product Overview
GREAT STUFF Pestblock Insulating Foam Sealant with Quick Stop Straw Technology helps protect your home from pests and insects. It seals gaps, cracks and holes where insects and pests commonly enter. It expands to fill, seal and insulate gaps up to 1 in. (25 mm), forming a long-lasting, airtight and water-resistant barrier. Pestblock Insulating Foam Sealant blocks the entry of pests that can damage the house and its contents while helping improve the home's energy efficiency by reducing air leaks.
- New Quick Stop straw technology - helps stop messy foam drips
- Forms a barrier, blocking ants, roaches, spiders, bees and other pests
- Seals entry points airtight, keeping pests outside the home, where they belong
- Contains no pesticides
- Click here to learn more about Eco Options and Energy Efficiency
Info & Guides
Specifications
Dimensions
Coverage Area (sq. ft.)
5
Product Height (in.)
9.5
Product Width (in.)
3
Details
Compatible Install Surface
Cement,Concrete,Existing Insulation,Fiberglass,PVC/CPVC Pipes,Wood
Cure Time (hours)
1
Dry to touch (min.)
8
Install Temperature (F)
40-100
Insulation Features
Paintable,Stainable
Insulation R-Value
R3.7
Insulation R-Value per Inch
R3.7
Insulation Type
Spray Foam Insulation
Number of Pieces
1
Product Weight (oz.)
16 oz
Returnable
90-Day
Warranty / Certifications
Warranty Information
N/A
Questions & Answers
57Questions47Answers
Can I use this to seal around rigid foam board (to seal) that I'm installing in the floor joists ...
Asked by FlowJoyce May 31, 20213
AnswersWe put pink foam board insulation in the exterior wall when we renovated our bathroom a couple years ago. We used Great Stuff pest block to seal around it and make sure there were no air gaps. It didn't have any immediate bad effects on the foam board that we could see and after we put up drywall it still seems to be well air sealed today so it seems like it worked fine.
Well this cause expanding issues and deform the frames around doors and windows?
Asked by Adam May 26, 20218
AnswersThere is another variety of Great Stuff specifically designed for doors and windows so that it does not expand hard enough to push your frame out of alignment. It doesn't specifically say the pest block will cause a problem, but if they have another variety designed so that it will not warp your frame, I assume that pest block or one of the other varieties could possibly warp your door or window frame.
Can I use this foam to fill the hollow in the tree ?
Asked by Alex March 22, 20214
AnswersWould probably work. Might take a lot of product. Could be toxic to the tree or birds that might peck at it. I'd probably look for another more natural solution.
Can I use an exterior silicone sealant over top after this product fully cures?
Asked by Baloverreb March 10, 20215
AnswersThe foam is temporarily set Interior or exterior
is this product heat resistant?
Asked by Raven December 28, 20205
AnswersHey there Raven, As with all spray in foam sealers, they are very flammable !! the gas in the can and vapors can burn. Now there is also a Fireblock type of sealant that will impedes the spread of smoke and Fire, and it takes the heat better then other types. Mouse
Is it closed cell and what is the output volume of material?
Asked by Dan November 14, 20203
AnswersManuel info is on the can
Do you remover the plastic nozzle or leave it attached?
Asked by AMM October 17, 20205
AnswersWhy would you remove this nozzle? You might cover everything, including yourself, in the most sticky (and I do mean STICKY) mess. If you do remove the nozzle, please post the results on one of the media outlets on the internet. Practice with a small area first, then learn how far you can throw the can while cursing.
Does it work for birds?
Asked by leojhud September 21, 20205
AnswersNope
Can I use this product around my copper pipes from my water-based boiler system?
Asked by Ccc September 17, 20205
AnswersThey make a seal tape for your pipes, the foam is highly flammable
Will this keep boring bees from boring through this
Asked by Marc June 20, 20204
AnswersWhy kill the bees, call a bee keeper
Customer Reviews
Dec 21, 2020
mice ate right through
I had high expectations and the application was simple. Unfortunately it only took 2 days for a mouse to chew a hole through this foam.
by evan
Response from GREAT STUFF & DuPontDec 28, 2020
We are sorry to hear that our products did not work according to your expectations.
Great Stuff™ Pestblock Insulating Foam Sealant is a barrier to stop pests from having immediate access. It is not intended to deter rodents.
The following steps may further assist in creating that barrier:
1. Fill the gap with Great Stuff™ Pestblock
2. Apply a small screen or steel wool over the uncured Great Stuff™ Pestblock
3. Once first layer is cured, apply another layer of Great Stuff™ Pestblock
Great Stuff™ Pestblock Insulating Foam Sealant is a barrier to stop pests from having immediate access. It is not intended to deter rodents.
The following steps may further assist in creating that barrier:
1. Fill the gap with Great Stuff™ Pestblock
2. Apply a small screen or steel wool over the uncured Great Stuff™ Pestblock
3. Once first layer is cured, apply another layer of Great Stuff™ Pestblock
May 29, 2018
No way to control out put, over fills cracks and holes. Left over can't be used cause product sol...
No way to control out put, over fills cracks and holes. Left over can't be used cause product solidify s in the spout. No way to smooth it out so that it looks neat. Check pics out. It does seal well
by Pablo
Response from DowGreatStuffNov 28, 2018
Hi Pablo, please see the follow recommendations for your next GREAT STUFF™ application for a better experience: Fill openings approximately 50% full; the foam will expand to fill the space. GREAT STUFF™ Insulating Foam Sealant will seal itself shut if left sitting after use. Inserting a pipe cleaner sprayed with oil lubricant or a nail coated in petroleum jelly into the applicator straw may prolong the life of the product up to 30 days, however, it's better to plan ahead, identify and list all possible applications before using the can. You will need to cut off the yellow tip of the Quick Stop Straw to place the pipe cleaner or nail into the straw. Cured foam (wait at least 8 hours) can be trimmed, shaped, sanded, painted or stained. To trim, use a sharp knife or serrated blade.
Feb 21, 2018
Doesn't work as advertised as Rodents chew right threw it. They make quite a mess of it as if the...
Doesn't work as advertised as Rodents chew right threw it. They make quite a mess of it as if they actually enjoy chewing on it. Would not recommend for anything other then just as an overpriced foam sealant.
by HandyMan
Response from DowGreatStuffAug 10, 2018
We are sorry to hear that our products did not work according to your expectations.
GREAT STUFF™ Pestblock Insulting Foam Sealant is a barrier to stop pests from having immediate access.
The following steps may further assist in creating that barrier:
1. Fill the gap with GREAT STUFF™ Pestblock;
2. Apply a small screen or steel wool over the uncured GREAT STUFF™ Pestblock;
3. Once first layer is cured apply another layer of GREAT STUFF™ Pestblock.
For further information and assistance please contact our GREAT STUFF™ Technical Group at 1-866-868-1183.
GREAT STUFF™ Pestblock Insulting Foam Sealant is a barrier to stop pests from having immediate access.
The following steps may further assist in creating that barrier:
1. Fill the gap with GREAT STUFF™ Pestblock;
2. Apply a small screen or steel wool over the uncured GREAT STUFF™ Pestblock;
3. Once first layer is cured apply another layer of GREAT STUFF™ Pestblock.
For further information and assistance please contact our GREAT STUFF™ Technical Group at 1-866-868-1183.
Nov 29, 2016
I have been using this product over the past 6 months as we have been involved in renovating a ga...
I have been using this product over the past 6 months as we have been involved in renovating a garage into an office and a storage area. The features that I like include: coverage; short curing time so that we can continue on working without a long delay; ability to remove cured spots that are in incorrect areas fairly easily and it cleans up from floor and walls well. It has worked extremely well for us to date and keeps out rain as well as insects - it works well behind the insulation we are using in this remodeled space.
Items that I do not like as well:
- foam sticks to skin and clothing (if not wearing gloves or area is uncovered) - In the case of my sibling who is helping and has very sensitive skin, the skin actually peeled off when she got some of it on her skin when I handed her a cloth to throw away
- and it takes several days or longer to remove from skin and does not come off clothing at all even when washed immediately with soap and water as recommended. (NOTE: I do wear gloves most of time when using the item.)
- The newer cans I recently purchased have a new spout design which does not seem to work better - foam comes out bottom of spigot and is no more easily controlled for extra spray - I need to keep wiping off spout area and throwing away the cloth so that it is not more of a mess
Does it meet your expectations? YES - It covers open spaces between studs and other areas so that insects and other pests do not enter the area we are remodeling.
by VRWMA
Jun 1, 2016
Carpenter bees
Maybe it's good for ants or little spiders but not good for carpenter bees. I have some really annoying carpenter bees boring holes into my rake board. I called an exterminator and he wanted $600 to stuff the void with a mesh after spraying. It sounded like too much just to stuff, so I went with this. Not only did it not work but it ruined my siding. Now I have to spend money to have the rake boards replaced as well as some pieces of my siding. $600 doesn't sound too bad now. I guess I can recommend this for other types of pests. Can't if it would work for them. Good luck.
by Ralph
May 1, 2015
Pestblock foam sealant
Purchased Pestblock foam sealant to fill deep gaps between brick face and window tops, fascia boards, and edging. I recommend wearing gloves of some sort because the product is sticky; we wore disposable vinyl gloves and changed them out as we needed. Follow directions exactly. The foam expands when applied but also continues to expand for a good few minutes more as you fill other gaps. If you don't want the rounded front of the expanded foam, it can be gently pushed down after it has time to set. Foam is yellow-gold color when dry. We intend to paint the dried foam white to match the boards. Photo shows approximately a 1.5 inch high by 2.5 inch wide by 1.5 inch deep gap filled with Pestblock, patted down flush with brick and before painting. Has been installed over a month with no degradation or change in look.
by ShakerBlue
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