Everything you need to know about foam foils
Under the laminated and laid parquets with modern click-joint an underlay foam foil should be installed.
Main functions of the parquet underlay foam foils
To provide durable protection and flexible support to the most fragile part of the parquet, the click-joint, due to their high loading capacity.
To balance the smaller unevenness of the subfloor, rand to reduce the knocking sound effect as an anti-vibration layer.
It is an important requirement of the coaster foils to be properly hard but maintain their flexibility in long terms.
Why are higher performing underlay foams necessary?
From the available product offer, the cheap EPE foam basic version and the inflexible XPS materials are not able to protect the parquet’s joints in long terms. Due to the continuous load, the joint breaks that results in the slip of parquets, causing lots of headache and extra costs.
If you wish to avoid this and have a parquet that serves over 20 years perfectly in its original aesthetics, you should choose a permanently flexible underlay that provides sufficient bearing force that meets the requirements of the use and load of the given place.
Installation manual
The appropriately prepared plain and smooth subfloor must be cleaned, the spackling and other splashes of paint shall be scraped up, and the overall subfloor should be hoovered.
The foam foil rolls should be installed in tight joints.The foam foil can and must not be overlapped.
If a coaster foil associated with LDPE or ALU foil, the part disposed with self-adhesive ribbon should be overlapped and adhered.
If there is no lamination, steam close and sliding parting foil should be installed between foam foil and parquet.
ISOFOAM PREMIUM products
With ISOFOAM PREMIUM range, you can hedge the bet and install the work yourself.Lasting quality without compromise!
| ISOFOAM LF PREMIUM 75 ALU PLUS | ISOFOAM LF PREMIUM 75 LD PLUS | ISOFOAM IF PREMIUM 100 | |
| Density | 2 mm | 2 mm | 2 mm |
| Length of roll | 12.5 m | 12.5 m | 12.5 m |
| Width of roll | 100 cm + 6 cm ALU | 100 cm + 6 cm LD | 100 cm |
| Density | 75 kg/m3 + 20 μ ALU | 75 kg/m3 + 100 μ LD | 100 kg/m3 |
| Loading capacity | 6 tons/m2 | 6 tons/m2 | 7.5 tons/m2 |
| Resistance to dynamic loads | ≥50 000 cycle | ≥50 000 cycle | ≥100 000 cycle |
| Knocking sound – Hindrance | 19 dB | 19 dB | 20 dB |
| Step sound – Hindrance | 17% | 18% | 16% |
| To household and community buildings with medium load | ✓ | ✓ | ✓ |
| To household and community buildings with high load | ✓ | ||
| Laminated with a steam controlled, smooth LDPE layer | ✓ | ||
| Laminated with ALU layer | ✓ | ||
| Can be used with underfloor heating | ✓* | ✓ | ✓ |
*Note! If you have infra heating foil, ALU laminated underlay foam must not be used between the thermal foil an the parquet as it significantly restrains the radiated infra heat.
Tip: Before choosing the appropriate underlay foam, the type, measurement and frequency of the load pressuring the parquet should be considered.
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| ISOFOAM LF PREMIUM 75 ALU PLUS | ISOFOAM LF PREMIUM 75 LD PLUS | ISOFOAM IF PREMIUM 100 |
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| *(must not be used with infra thermal foil) | ||
| Underlay foam foil with high loading and great soundproofing capacity, disposed with steam control layer. | Underlay foam foil with high loading and great soundproofing capacity, disposed with steam control layer. | Underlay foam foil with extra high loading and great soundproof capacity. |
| Disposed with adhesive tape! Easy, fast and precise installation even without professional help. | Disposed with adhesive tape! Easy, fast and precise installation even without professional help. | |
| Installation tip | Installation tip | Installation tip |
| The reduction knocking sound emerging from walking, as well as the ceiling’s soundproofing capacity could be improved by a high quality underlay foil. | If you want to hedge your bets, install the parquet on self-leveled, appropriately prepared, plan surface. | Compare the manufacturer’s instruction found on the package of the chosen parquet with the data of the underlay foil. |
The most important product properties of the ISOFOAM PREMIUM foam foils
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| Density | Loading capacity – on 1 m2 equivalent basis in ton | Number of the resistance cycles against dynamic loads | Knocking sound – indicating with how much decibel can reduce the noise load spreading downwards | Thermal resistance |
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| Steam close capacity – indicating how resilient it is to the steam load coming from downwards | The balancing capability of the underlying surface in millimeter | Step sound hindrance – indicating the level of the reduction of the noise load in the room emerging from walking | Can be used with underfloor heating |
