What is EPS foam insulation?
Expanded Polystyrene (EPS) is a rigid, closed cell, thermoplastic foam material produced from solid beads of polystyrene, which is polymerised from styrene monomer and contains an expansion gas (pentane) dissolved within the polystyrene bead. The waterproof properties of expanded polystyrene (EPS) refer to its ability to resist the penetration of water. While EPS is not entirely waterproof, it does exhibit water-resistant characteristics due to its closed-cell structure.Expanded Polystyrene is a tough, rigid, light weight, closed cell insulation foam commonly known as EPS. Having densities in- between 8 Kg/M3 to 32 Kg/M3. Its close cell structure provides low water vapor permanence and hence it is widely used for thermal insulation.Expanded Polystyrene (EPS) However, if it is exposed to water for an extended period, it can absorb some moisture, leading to a reduction in its thermal performance. It’s worth noting that while EPS may absorb less water than other types of insulation, it’s still not entirely waterproof.Does polystyrene insulation need a vapour barrier? Closed-cell XPS polystyrene can function without the need for a vapour barrier on account of its density and lack of porousness, however, with EPS polystyrene it is recommended to install a vapour barrier.
Does EPS foam degrade over time?
EPS is a plastic and aside from contact with hydrocarbons or exposure to UV from sunlight, it is relatively unaffected by other naturally degrading processes. Geofoam® placed in the ground for decades increased its compression resistance (strength). The lifespan of EPS is long, potentially unlimited. Expanded polystyrene (EPS) insulation has the highest R-value per dollar of rigid foam insulations. Unlike other options, EPS retains its R-value throughout its service life, ensuring a cost-effective and long-lasting solution for below grade, floor, wall, and roof insulation.Moisture Resistance: EPS foam is resistant to moisture, preventing mold and mildew growth. Durability: Despite its lightweight nature, EPS foam is remarkably durable, capable of withstanding impact and compression.Expanded polystyrene (EPS) presents fire risks due to its combustible nature. When exposed to fire, EPS can ignite easily and release toxic fumes, contributing to fire spread and hindering evacuation efforts. To mitigate these risks, adequate fire protection measures are essential when using EPS materials.Untreated EPS foam burns at 650° to 700°F with a flame source. It won’t continue burning on its own until 840° to 930°F is reached.
Is EPS foam better than Styrofoam?
EPS foam is lightweight but has a high-density which makes it stronger and more durable than Styrofoam. Many will look to EPS as a go-to fill material thanks to its compressive strength and ability to withstand heavy loads over long periods of time. EPS provides excellent value for money, is versatile, and will last for decades. The foam insulation boards have a very high level of insulation value and help achieve the required U-values necessary to meet building regulations.EPS (expanded polystyrene) is not waterproof per se, but does not have a capillary effect. This means that the insulation does not absorb water, and water can only penetrate if forced to do so by external pressure.Cons of EPS: More fragile and prone to damage during installation and handling. Lower R-value per inch of thickness compared XPS (3. EPS, compared to 5 for XPS) More susceptible to water absorption, which can reduce its insulation performance and potentially cause structural damage.EPS foam is popular for its use in packaging, disposable food containers, insulation for buildings, and craft products. XPS foam is often used in insulation boards for roofs, walls, and foundations in commercial and residential construction.Although some EPS manufacturers attempt to disguise it, EPS absorbs more water than XPS. Absorbed water results in lost insulation power (R-value). Lost R-value results in reduced performance.
What is the R-value of 2 inch EPS foam?
A typical EPS insulation R-value stands firm at about R4 per inch of thickness. That means a one-inch thick board will have at least an R4 and a two-inch thick EPS board will have a minimum R8. As you can see, the R-value of EPS rigid insulation requires increasing thicknesses and/or densities in order to achieve a good thermal barrier. For example, if you want to meet the minimum R13 for walls, you’ll need at least 3” thick EPS. For an R20 wall, you’ll need 4” or more, depending on the density you select.
What is the lifespan of EPS foam?
When EPS is utilized for insulating walls it can offer durable thermal protection that can last anywhere from 30 to 50 years. ICFs utilize EPS in their construction which can last indefinitely as it is shielded from substances and external elements that cause deterioration over time. Floor Insulation Brands like Kingspan and Ecotherm are popular choices for their durability and efficiency. EPS Insulation (Expanded Polystyrene): EPS is another long-lasting option, with a lifespan of around 30-50 years.EPS Insulation (Expanded Polystyrene): EPS is another long-lasting option, with a lifespan of around 30-50 years. It’s effective for both suspended and solid floors.
Will EPS foam absorb water?
XPS and EPS insulations both absorb some moisture from exposure to water for extended periods of time; however, research—from the 1970s to the present day—has consistently shown that XPS absorbs significantly less moisture than EPS with the differences becoming most apparent after about six years. EPS is also closed-cell in nature and does not readily absorb moisture from the atmosphere. Plus, it releases water faster than alternative products, so EPS insulation will dry quickly and thoroughly if it does get wet.EPS is a closed-cell foam, meaning there are no holes or spaces between the cells. Because of this make-up, EPS is highly resistant to bending and compression, so it works well in load-bearing situations. EPS is an extremely strong material for construction projects that is not subject to degradation over time.Q: Is EPS moisture resistant? A: EPS is non-hygroscopic and does not readily absorb moisture from the atmosphere. Its closed-cell structure reduces the absorption and/or migration of moisture into the insulation material.High-Density EPS The High Density EPS 200e series showcases EPS sheets in various thicknesses, ranging from 20mm to 90mm, packaged in bundles tailored to your project scale.
Can EPS get wet?
The good news with EPS is that it is naturally moisture resistant. This doesn’t mean it is completely waterproof, but it does resist moisture thanks to its closed-cell design. EPS’ moisture resistant properties also make it resistant to mold and algae. EPS foam usually does not absorb water because its high closed cell structure seals most of the bubbles and prevents moisture from penetrating. However, tiny open pores or damage can allow moisture to penetrate.