Product Introduction:
EPS roof insulation boards are granulated foam that has been meticulously made to endure the harshest roof conditions. Wall Sandwich Panel EPS Beads, from a visual standpoint, look like small white granules, but they are quite different from the commonly seen foam simply repacked. Throughout the year, roof surfaces face numerous challenging factors, including direct sunlight, extreme heat, heavy rain, and snow, huge temperature fluctuations between day and night, and long-term structural loads. Therefore, the material must be highly durable, non-absorbent, not capable of retaining moisture or deformation, and be light enough not to add extra weight to the roof.
Product Applications:
Virgin expandable polystyrene eps beads if seen from the outside, may look as if they consist of ultra-light EPS spheres, but they are actually on their way to becoming the most crucial component of various types of roof insulation panels in the most diverse applications, such as a flat roof, a pitched roof, a steel structure roof or even a green roof. Thanks to the latter feature these materials are mostly used in building insulation systems as the core insulation material of flat roofs. Hence this kind of insulation not only has a very high degree of airiness but is also a good thermal insulator, so the technique supports heat transfer limitation, thus the roof is well protected from the sun in the hot period, whereas the latter is prevented from escaping during cold times. As far as steel constructions and metal roofs are concerned, it provides a firm yet gentle support, thus preventing deformation and even collapse as a result of major temperature variations of the metal roof.

Why is expanded polystyrene beads insulation suitable for roof insulation boards?
Daruwin's polystyrene expanded beads insulation material is the best for roof insulation boards as its performance is in perfect harmony with the roof, which is the most demanding element of the roofing system. It has a very high closed-cell structure, and the percentage is above 90, making moisture penetration impossible. Even in such cases as rain, snow, and coastal humid cities, the device is dry inside, no weights and no disfigurations due to moisture are possible. Besides, it has stable temperature resistance characteristics; even when exposed to 60-70℃ summer heat, the roof does not soften or deform as in the case of some materials that start to warp after a few years.
Buyer Focus:
Daruwin definitely stand behind our claim; the particles are always smooth and rounded with a tightly packed internal structure, and the density distribution of the foamed core is uniform, so there is no part of the board that is hollow or less strong. Besides, our thoughts are long-term durability and water absorption - in fact, roofs are the most susceptible to moisture-related problems. Our White EPS Polystyrene Beads Foam for the roof is produced with a close-cell rate of more than 90% and a water absorption rate of ≤2%, so it is almost impossible for it to become damp, to swell, or to be changed even under the conditions of prolonged exposure to moisture or sun.

Our Company's Strength
Most manufacturers when referring to raw materials, are willing to bet on a supply that is mostly stable and consistently of good quality over time, something that really differentiates Daruwin from other companies. Our whole EPS program is quite big and of high volume, covers 185 acres, and has a production capacity of 240,000 tons per year. Thus, you don’t have to be concerned about running out of stock if you are dealing with large orders or producing at the peak of the season. Located at Fushun Petrochemical, our facility is not only guaranteed to get regular supplies of raw materials, but the short distance also means lower costs and quicker deliveries.

FAQ:
Q: Will sunlight on the roof cause the EPS board to break down?
A: We have tested our Wall Sandwich Panel EPS Bead for resistance to heat and therefore it won’t break down even after being exposed to high-temperature conditions over a long period of time.
Q: Could it absorb water? And what if it is exposed to rain and snow?
A: Due to its extremely high rate of closed cells, it neither absorbs water nor gets damped, so it is undoubtedly a perfect material for roofs
Q: Is there a way to use EPS beads from the Wall Sandwich Panel for slope-forming boards?
A: By just changing the density of EPS beads from the Wall Sandwich Panel, one can certainly make slope-forming boards ranging in different weights and thicknesses.
Q: The production of foamed goods from Wall Sandwich Panel EPS Bead is not very difficult to control, is it?
A: Since all the particles are perfectly spherical and uniformly sized, the foaming can be very easily controlled, and the machinery requires very little adjustments anyway.
About Us:
We are dedicated to the manufacturing of high-performance EPS materials. The total capital put into our plant amounts to RMB 350 million, with a land coverage of 185 acres, which assures a strong supply capacity. We have made a name for ourselves mainly due to graphite-grade EPS, which is a product that exhibits very stable flame-retardant and thermal-insulation features, it complies with national standards, and it is a type of material that is predominantly used in the construction and insulation industries. On top of that, we are also enabling the cold chain and packaging clients give the spec modification service according to their needs, thus, making it easier for them to pick a more suitable material.
