Expanding Foam

Professionals will tell you that having expanding foam handy is a must. Here at Ace Fixings, we believe so too. Whether the job requires you to fill gaps in external door frames or fill cavities in walls, brickwork, plaster, or wood, we have the right expanding foam in stock. 

To help you understand what expansion foam is and what it does and find the expanding foam suitable for your application, here's everything you need to know before heading to checkout: 

What is expanding foam?

Expansion foam, also known as insulation foam, is a chemical product usually made of two main substances, isocyanate, and polyol resin. When mixed together, they reach and expand up to 60 times their liquid volume, creating a long-lasting seal which insulates against heat, moisture, and sound. 

What is expanding foam used for?

Expanding foam has multiple applications, but the most common one is filling and sealing awkward gaps, hollows, and cavities. Expansion foam is often seen as an ideal addition to any collection of building materials, whether it is construction or home improvement.  

What other types of expanding foam are there?

Whether in aerosol or cartridge form, there are five main types of foam:

• One-part expanding foam 
• Two-part PU foam or rigid foam 
• PU adhesive foam 
• Fire-resistant PU foam 
• Weatherproof PU foam 

The type of expanding foam you need depends on the filling task. A universal or one-part expanding foam is probably all you need for basic tasks, i.e., the products on this page.  

Expanding foam is the most popular and least expensive, has powerful expanding properties and is mainly used to fill in cracks. The foam cures upon contact with moisture, which means you may need to dampen the surface before application.  

How to use expanding foam

Before actually using the expanding foam, it is essential to shake the container thoroughly and clean the surface, removing grease if necessary. We also recommend using gloves and reading the instructions to see if you have to dampen the surface. 

One application is usually enough to fill a smaller gap. When looking to fill more significant gaps, the foam needs to be built up gradually by applying several layers.   

Excess foam can be cut off using a blade knife once dry. Foam can also be sanded down and painted. It is also important to mention that too much foam can misshape the surface, which would cause complications when working with window frames or dented areas. 

Knowing where to find the expanding foam or foam gun you need?

The easiest way to access our full range of foams is by clicking here. You can also locate our foams and foam accessories by using the top menu. Our range of foam guns can be found here. 

Have a question about expanding foam?

If you’re interested in any of our expanding foam products but want to know more about their use and application, please feel free to contact our team today. You can contact us directly using the phone number at the top of this page.