StyroBloc Polystyrene Blocks

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StyroBloc is a lightweight, durable, economical and versatile expanded polystyrene foam block that is easy to cut and shape for use across a range of applications.

Manufactured in Australia from Styroboard EPS expanded polystyrene, StyroBloc EPS blocks are lightweight for easy installation, weather resistant, long-lasting, and provide high levels of thermal insulation and acoustic benefits.

Foam construction blocks are a versatile product that can be used in a range of building applications, including foam concrete void filler, pipe insulation, and intricate polystyrene architectural mouldings.

EPS foam blocks also make excellent cool room insulation.

StyroBloc can be shaped, cut or laminated to your specific requirements, making it a popular choice for retail and creative foam applications, including expanding foam props, foam retail signage and model making.

Benefits of StyroBloc foam blocks

Lightweight & easy to install
Versatile & cost effective
Excellent thermal insulation properties
Weather resistant with low moisture absorption
Retains its structural integrity ensuring long term R values
Environmentally responsible & fully recyclable
Complies with Australian Building Standards AS1366 Part 3 – 1992

Applications

Void filler
Coolroom insulation
Retail signage
Model making
Event props

Why buy polystyrene foam blocks from Foamex?

Established in 1982, Foamex is one of Australia’s largest manufacturers and recyclers of polystyrene products and a recognised leader in the development of new and innovative uses of expanded and extruded polystyrene.

All Foamex expanded polystyrene (EPS) products, including StyroBloc, are manufactured locally to stringent Australian standards with independent research, testing, and industry consultation.
All products are manufactured from the highest-quality expanded polystyrene, which is strength-tested against a range of stringent criteria.
Manufacturing technology used to produce Styroboard EPS expanded polystyrene products removes the need for chlorofluorocarbons (CFCs), meaning the products do not produce ozone-depleting gases.
Foamex has a closed-loop production model, which means that whatever leaves the factory that is either unused or has reached its end of life can be returned and manufactured into other products, such as StyroBloc, which contains up to 75% recycled polystyrene.
Foamex collects and recycles scrap polystyrene from building sites, commercial recycling and recycling bins accessed by the general public.

StyroBloc Product Specifications

PHYSICAL PROPERTIES	UNIT	CLASS
		L	SL	S	M	H	VH	VHH32	VHH36	VHH38
Compressive stress at 10% deformation, min.	kPa	50	70	85	105	135	165	250	300	350
Cross breaking strength, min.	kPa	95	135	165	200	260	320	500	550	600
Rate of vapour transmission, max. measured parallel to rise at 23°C	μg/m2.s	710	630	580	520	450	400	340	280	220
Max. dimensional stability of length, width and thickness, 7 days at 70°C	%	1	1	1	1	1	1	1	1	1
Min. thermal resistance (50mm sample) at a mean temperature of 25°C	m2K/W R(50/90)	1	1.20	1.22	1.25	1.40	1.41	1.43	1.45	1.5

OTHER PROPERTIES	UNIT	CLASS
		L	SL	S	M	H	VH	VHH32	VHH36	VHH38
Density - nominal	kg/m3	11	13.5	16	19	24	28	32	36	38
Compressive strength at 1% deformation, max.	kPa	14	23	31	42	58	60	63	65	70
Compressive strength at 5% deformation, max.	kPa	33	59	68	95	134	164	230	290	340
Flexural strength, min.	kPa	60	150	178	218	304	337	362	385	413
Elastic modulus, min.	kPa	1450	2200	3100	4250	5850	7250	8650	9850	10950
Water absorption by total immersion, max.	Vol%	4	4	4	3	3	2	2	1	1
Buoyancy force	kg/m3	989	986.5	984	981	976	972	968	965	963
Coefficient of thermal expansion	m/m deg K	6.3x10-5	6.3x10-5	6.3x10-5	6.3x10-5	6.3x10-5	6.3x10-5	6.3x10-6	6.3x10-7	6.3x10-8

NB: This information is based on our current knowledge and experience. In view of the many factors that may affect processing and application, this data does not relieve the purchaser of the responsibility of carrying out their own tests and experiments; neither do they imply any legally binding assurance of certain properties or of suitability for a specific purpose. It is the responsibility of those to whom we supply our products to ensure that any proprietary rights and existing laws and legislations are observed.

Width:	1200mm
Length:	2400mm - 5000mm
Thickness:	600mm

FAQs about polystyrene blocks

Why do builders use polystyrene blocks?

Polystyrene blocks are lightweight and easy to handle without using heavy lifting equipment. This also makes them great for difficult terrain and cost-effective transport and installation compared to traditional fill products. They make excellent void filler, saving on using concrete, which is more expensive than polystyrene to transport and install. Expanded polystyrene foam blocks (EPS) are also favoured in construction due to their excellent thermal insulation properties, which help reduce energy costs. EPS is 100% recyclable and moisture resistant, preventing mould and structural damage. It maintains its integrity over time, ensuring durability and longevity, and its versatility allows for varied applications, such as geofoam blocks.

How to cut polystyrene blocks

A variety of tools can be used to cut polystyrene blocks, including hand saws, hot wire cutters, long-blade utility knives, and jigsaws. A hot wire cutter is the quickest and neatest method, but it is important to take safety precautions when cutting EPS blocks with a hot wire or knife.

State Sales Offices

NSW/ACT

(02) 9773 1655

VIC (Bayswater Nth Office)

(03) 8739 5800

VIC (Somerton Office)

(03) 9219 6200

VIC (Coolaroo Office)

(03) 9302 1022

(08) 8393 5900

QLD

(07) 3390 8955

TAS

(03) 6263 6900

StyroBloc

EPS blocks are versatile and adaptive