Infraredheatingstore.com
XPS insulation board ISO74 (wood, parquet, carpet) Isofoam
Delivery within 3 business days
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Free shipping
What our customers think (1)
14 Jul 2026
Really pleased with these insulation boards. They’re thin but feel sturdy, cut easily, and sit neatly under the heating film. The floor warms up quicker now and there’s noticeably less sound underfoot. Good quality and simple to work with.
Free and no-obligation advice
Free and no-obligation advice
Feel free to contact us via the customer service page. We are available Monday to Friday from 9:00 to 12:30 and from 13:00 to 17:00, and will be happy to assist you with personalised advice.
Download our Quality Heating app for free
Download our Quality Heating app for free
We have developed our Quality Heating app which allows you, if your product has Wi-Fi, to control it easily. Through the app you can, among other things, adjust the temperature and create heating schedules. The Quality Heating app is available in the App Store for iPhone (iOS) and for Android.
Professional or installer? Discover the benefits
Professional or installer? Discover the benefits
Do you regularly purchase electric heating as part of your profession or business? Then become a professional customer at Quality Heating and benefit from additional service for your clients and attractive professional advantages for yourself.
Do your business activities fall into one of the following categories? If so, you can apply for a professional order account with us: contractor, finishing, installer, electrician, e-commerce or architect.
Please include the following information with your request:
- Company name
- Registration number (CoC)
Send your request by email to info@qualityheating.nl.
Product specifications
Description
Quality Heating ISO74 insulation board — just 6 millimetres thin floor insulation suitable for use under underfloor heating foil. The ISO74 has a very high density and is made up of small closed cells that deliver excellent performance under underfloor heating foil. The structure of the ISO-74 prevents heat from being conducted downward, directing all heat toward the floor surface.
Extra Information ISO74 polystyrene insulation boards
- Excellent thermal insulation
- Very good sound reduction
- Lightweight, only 6 mm
- Easy to install and cut
- Suitable for all underfloor heating foil systems
- Water resistance 0.06%
- Temperature-resistant -30 to +70 °C
- Sound insulation: above floor -5.6 dB; underfloor -21 dB
- Compressive strength/load capacity 6 t/m²
- Thermal conductivity 0.0279 W/mK
Pros and cons
What's in the box?
- Main product
- User manual
- Power cable
- Optional mounting materials
Frequently asked questions
Can I see this product in person?
Can I see this product in person?
Yes, you can view this product in our showroom. Contact us to schedule an appointment.
What is the warranty period?
What is the warranty period?
All our products come with a standard 2-year manufacturer's warranty. For some products, we offer an extended warranty. Please check the specifications here.
Can I return my product?
Can I return my product?
Yes, you have a 14-day withdrawal period. The product must be returned in its original condition and original packaging.
How can I check if a product is available?
How can I check if a product is available?
The availability status is shown on the product page. If a product is not available, please contact us to find out the expected delivery date.
Can I receive advice for my purchase?
Can I receive advice for my purchase?
Absolutely! Our team is at your disposal to help you. Contact us by email or visit us in our showroom for personalised advice.