Choosing the Right Solution - The Recommended Usage for Open v Closed Cell Thermal Insulation
Open cell insulation should be used for domestic properties, both lofts and cavities. It’s also useful for stud walls to retrofit insulation for thermal and acoustic purposes. It allows air to fill the product because it contains many holes meaning that it’s a breathable system and has a lower density than closed cell foam.
Open cell insulation in a nutshell...
When used over a period of time, open cells tend to have superior performance as they are less likely to be disrupted. Open cell insulation typically has a lower density than closed cell insulation and depending on the application, the make up of the open cell can be altered to increase the density.
The key advantage of open cell spray foam is that it is ideal for reducing airborne noise transmission and soundproofing.
It will potentially reduce dust and may be beneficial for those with allergies, as foreign particles are trapped in the pores and is also resistant to mould and fungi. It is extremely tough and will not deteriorate over time. It will last the duration of the structure it adheres to.
There's a multitude of uses that open cell can be utilised with as well as being excellent for domestic use. Small awkward areas that have been missed or left out from an original new build. Retro fit insulation is a big part of its usage. With very little intrusion low density open cell insulation is ideal for this purpose.
Closed cell Insulation...
Closed cell insulation is the oldest form of polyurethane insulation. It’s the major component of Kingspan products where it manifests in block form. You'll see it on any building sites with its familiar silver coating.
In closed cell foam, the holes within the foam are closed off from each other. This gives a far more durable material that is full of tiny vacuums.
Therefore, closed cells have a much better resistance to moisture than open cell products as they tend to be stiffer and more rigid. As a consequence, closed cell insulation is effective used in damp applications including gasketting and insulation. Similar to open cell the make up of closed cell foams can be altered to adjust its density compression resistance, rigidity and more.
The benefits of closed cell insulation don’t stop there either....
It can be used in internal or external environments as it has high durability against expansion and contraction. Closed cell insulation has a superior moisture barrier and a good resistance to water.
It’s very useful to increase structural strength and with seals and wrapping; closed cell is the best choice for pipe wrapping and sealing applications as it has high levels of durability and rigidity. HVAC gaskets and insulation simply because of the water resistance properties of closed cell foams.
Applied correctly and with the right installation process closed cell can be used for a myriad of purposes.
