Can you use expanding foam for fence posts?
Expanding foam post mix sets hard enough to leave the post unsupported in just a few minutes. It can be fully cured in a quarter of an hour. It's also much less dependent on temperature, which is different than concrete that should never be made if there's a risk of freezing.
Does Sika post fix work?
1:113:54Installing a Fence Post with Sika Post Fix vs. Concrete Post Mix (feat. Mike ...YouTubeStart of suggested clipEnd of suggested clipActually replaces two bag of post cement they're working like crazy I'm talking I'm playing. YouMoreActually replaces two bag of post cement they're working like crazy I'm talking I'm playing. You just open it up it's a two-part mix nice and simple all you do is follow the arrows lay it down roll.
Can you use expanding foam for deck posts?
As a review, there are benefits to expanding foam for deck posts that are apparent like smaller bags, no messy mixing and great load bearing abilities, but there are also great advantages happening at the molecular level when it comes to the chemical bonds of the product giving this material the benefits of durability ...
What do you fill post holes with?
0:371:37How to Set Posts in Concrete (without mixing) - YouTubeYouTubeStart of suggested clipEnd of suggested clipOnce you have dug your post hole add about six inches of quikrete all-purpose gravel into the bottomMoreOnce you have dug your post hole add about six inches of quikrete all-purpose gravel into the bottom of the hole. Then compact. And level the gravel using a post or 2x4.
How do you fill old fence post holes?
Fill entirely with soil. Even if those holes are 4 foot deep I would fill with suitable subsoil then top with grass. Or just topsoil then grass.
Is post foam as strong as concrete?
9:3112:01FOAM VS. CONCRETE - Fence Post Setting Test. This may be one of the ...YouTubeStart of suggested clipEnd of suggested clipFor a bag. Well this is how I look at it if you don't want to deal with the concrete. This might beMoreFor a bag. Well this is how I look at it if you don't want to deal with the concrete. This might be a route to go I mean it's just a very dense. Hard foam it's for post setting. And what I would say
Where should you not use expanding foam?
When NOT to Use Spray Foam InsulationFor areas that are too close to electrical boxes:For areas too close to ceiling light boxes:Open-cell spray foam on your roof:For closed-cavity spaces:If you have a history of skin, respiratory, or asthma problems:
Can expanding foam be used outside?
This expanding foam is definitely weatherproof. I used it outside and within an hour it was raining. The foam kept its shape and stayed firm.
Can Sika be used for deck posts?
Can Sika® PostFix® be used to set a deck post, playground posts, basketball pole or flag pole? Sika® PostFix® is not recommended for these types of applications. It is not recommended for any type of structural application.
How much Expanda-Crete high density post hole foam do you need?
With one Expanda-Crete pack equivalent to around 20 bags of rapid set cement you are going to save a lot of room on your ute.
These tables will help you work out how much Expanda-Crete high density post hole foam you will need for your next project
The Expanda-Crete useage chart is a guide to how many ml required per hole.
Find out the difference between expanding foam and concrete fence posts, and learn when to use each setting method
Concrete in some form or another has been around for thousands of years. The modern cement-based version first appeared in the mid-1820s, and generations of DIY enthusiasts and professionals have used it. It is inexpensive and, when mixed properly, can be very durable.
Concrete is the traditional material used to set fence posts
Concrete is made by mixing cement with water, and adding an aggregate that’s usually sand, gravel, or a combination of both. The proportions are important. It might often seem as if it’s thrown together with little care, but the wrong mix can be weak and prone to crumbling or cracking. When made properly, it can last 50 years or more.
Expanding foam fence post mix is a two-part polymer
Expanding foam is popular as a gap filler and insulator. It is usually provided in an aerosol can or will be pumped using dedicated equipment in commercial applications. Expanding foam for fence post fixing is a two-part polyurethane resin supplied in a lightweight pack. The two components react when mixed.
Concrete is much heavier but costs less than expanding foam
When setting fence posts in concrete, experts recommend using at least two 50-pound bags of store-bought mix for a 4×4-inch post in a hole 2 feet deep (available at The Home Depot ). Buying concrete like this is a good idea because it takes the guesswork out of preparation. Just add water and pour.
Concrete takes longer to fully cure, and foam sets in much colder conditions
When using concrete as a post hole filler, it’s usually necessary to provide some kind of temporary support, because the concrete won’t normally set sufficiently for the post to stay upright on its own for at least 30 minutes.
Common fence post repair products are not compatible with expanding foam
A variety of brackets and fence post repair spikes can be used to secure wooden fence posts that have been damaged, or where there is some decay. Concrete provides a strong support for these products.
Why is expanding foam good for fence posts?
The reason that expanding foam is such a great option is because it expands widely filling the surrounding cavities creating a strong seal. Let’s get into the difference between expanding foam and concrete for setting fence posts.
What is expanding foam?
Expanding foam is a product that is meant to expand and harden when it comes into contact with hair. Most often found in a canister with a spray nozzle, expanding foam is easy to apply in a variety of situations. Though it is generally used as a form of insulation, it can also be used to support fence posts.
What is Sika Postfix?
It is advertised as a “ two component, mix-in-the-bag expanding foam [that supports] non-structural posts such as a fence, mailbox, or sign posts. ”.
Why use concrete for fence posts?
Concrete is used to set fence posts primarily because of its strength and how long lasting it is. Despite expanding foam being a better option for certain reasons, concrete is a great option if you want your posts to be secure.
What is the best way to set a fence post?
The two most viable options for setting a fence post is using expanding foam or concrete. Between expanding foam and concrete, expanding foam is the better option for setting fence posts. However, concrete is also a classic and viable option and can be done quite easily like expanding foam . The reason that expanding foam is such a great option is ...
How long does it take for expanding foam to set?
Many expanding foams can set within three minutes of application, making it a quick method. Typically speaking, expanding foam is sold in bags that need to be mixed before applying. It has become extremely common to use expanding foam to set fence posts and mailboxes because of how effective it is.
What is the advantage of expanding foam?
The key advantage expanding foam has over concrete is within the expansion itself. Because expanding foam expands up to 15 times its size, it goes the extra mile in securing a fence post. The cavity beneath the post gets completely filled by the expanding foam which gives it extra security.