Spray Glass Wool

EcoIn spray glass wool is a blown-fibre insulation applied to structural surfaces and irregular geometries. With thermal conductivity of 0.035 W/m.K and density up to 100 kg/m3, spray glass wool creates a seamless thermal envelope on steel beams, concrete surfaces, and equipment housings.

Quick Details:

Package: Plastic packing
Thermal Conductivity: 0.035 W/m.K
Density: 10-100 kg/m3
Delivery time: 7-10 days
Payment terms: TT, LC, Trade Assurance

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Introduction

EcoIn Inorganic spraying fiberglass is formed by inorfil and water base glue. By stirring and mixing with atomized water, it it sprayed with air compression pump when used to form paint-coat on substrate which need protected. This paint-coat can function as sound absorption, heat insulation and fire proofing.

Technical Parameters

Propertities		Value	Unit
Density		≤100	kg/m3
Heat Shringkage temperature		≥400	μm
Slag content		≤0.3	%
Fiber Diameter		≤5.0	μm
Thermal Conductivity (Average Temp 25℃)		≤0.035	W/mk
Combustion performance Grade A1	Average temperature raise in furnace	≤30	℃
	Combustion Duration	0	s
	mass loss rate	≤50	%
	Total combustion value	≤2.0	MJ/kg

Features

EcoIn spray glass wool has below features:

Excellent heat-proof performance: thermal conductivity is as low as 0.035w/m.k
A1-level combustible: The main component of fiberglass is silicide(reaches above 50%). It meets the requirements of incombustibility, non deformation and non-brittleness.
Good sound-absorption: when sound wave come into fiberglass, sound energy will be absorbed because of the friction with fiber and different size of cavitation.
Good mechanical performance: High chemical stability and excellent insulation material
High corrosion resistance: Fiberglass resists strong acid and strong Alkali. The function characteristics will not be decreased after a long time.
Good reconstitution capacity: Fiberglass contains countless fixed caviation. So it has meritorious reconstitution capacity and resistance to any impact shock.
Low moisture rate: the moisture absorption rate is close to 0.

Application

Ecoin spray glass wool is lightweight, nontoxic and odourless, it’s excellent in sound absorption, weather fastness, high efficiency heat insulation and fire-preservation.
Base on its good continuity, it’s adapt to special shaped structure, like tunels, subway, music hall,etc.

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Spray Glass Wool – Frequently Asked Questions

According to Wikipedia, glass wool is an insulating material made from fibres of glass arranged using a binder into a texture similar to wool, widely used in thermal and acoustic insulation applications.

What makes spray glass wool ideal for irregular surfaces?

Spray glass wool is applied as a wet slurry of fine glass fibres that bond directly to virtually any substrate — steel sections, curved concrete walls, pipe supports, and mechanical ductwork — creating a continuous insulating layer without the gaps and thermal bridges that sheet products leave around fixings and joints. Once the slurry cures, spray glass wool forms a rigid, dimensionally stable layer that resists vibration, settling, and minor structural movement over decades of service.

The blown application method allows spray glass wool to fill recesses, bolt heads, and weld seams that rigid boards cannot reach, making it the preferred solution wherever substrate geometry changes direction or cross-section. For roofs, soffits, and overhead structural members where fixing pre-cut boards would require extensive mechanical fasteners, spray glass wool self-adheres and requires no additional anchoring system.

What thermal and fire performance does this insulation achieve?

Spray glass wool achieves a thermal conductivity of 0.035 W/m·K at 25°C and is classified as non-combustible under Euroclass A1 (EN 13501-1), the highest fire classification in the European system. It contributes no fuel load to a fire, emits no toxic smoke, and generates no burning droplets — properties critical for structural steel fire protection and for insulating escape routes and plant rooms where building regulations require non-combustible lining materials.

For passive fire protection applications on structural steelwork, spray glass wool can be specified in combination with intumescent coatings or as the sole fire-protection layer, subject to the tested density and thickness defined in the relevant certification. Typical fire resistance periods achievable range from R30 to R120 depending on the applied density and the section factor of the steel member being protected.

Where is spray glass wool most commonly installed?

Spray glass wool is used extensively in commercial and industrial buildings for thermal insulation of roof decks, underside-of-slab applications, acoustic linings of plant rooms, and fire protection of structural steel. In the marine and offshore sector, the blown application method handles the complex geometry of ship hull structures and compartment bulkheads without requiring cutting or fitting of individual pieces.

Cold storage facilities and refrigerated warehouses use spray glass wool to insulate the underside of raised floors and roof structures where the continuous, gap-free layer prevents condensation and maintains temperature uniformity. For standard wall and roof applications with flat, accessible substrates, our glass wool board products offer a cost-effective alternative where board installation is practical.

How is spray glass wool installed on site?

Installation requires specialist spray equipment that mixes dry glass fibre with a water-based binder and propels the mixture onto the prepared substrate at controlled pressure and flow rate. The substrate must be clean, dry, and free of oil, loose scale, or previous coatings that would prevent adhesion. A primer coat is applied to porous substrates such as concrete or masonry to improve bond strength.

Applied thickness is verified using depth pins during and after application. Curing typically takes 24–48 hours at ambient temperature before overcoating or loading. The cured spray glass wool surface can be left exposed, painted, or overclad depending on the aesthetic and durability requirements of the project. EcoIn’s technical team provides specification support and application guidance for each project type.

What are EcoIn's export MOQ, lead time, and packaging specifications?

EcoIn exports spray glass wool with a standard lead time of 7–10 working days from order confirmation. The product is packaged in plastic wrapping on pallets optimised for container loading, with each unit clearly labelled with density, batch reference, and production date to support project quality records.

Payment is accepted by Telegraphic Transfer (T/T) and Letter of Credit (L/C). Technical data sheets, fire test certifications, and safety data sheets are available on request. Contact our export team for pricing, minimum order quantities, and freight quotations to your port of destination.

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Spray Glass Wool

Spray Glass Wool

Introduction

Features

Application

Videos

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Introduction

Technical Parameters

Features

EcoIn spray glass wool has below features:

Application

Application Gallary

Videos

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Spray Glass Wool – Frequently Asked Questions

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