Attic Floor Insulation

Materials & Technologies

Attic floor insulation is not just a standard construction process; it is a strategic investment that quickly pays off, bringing tangible savings and exceptional comfort for many years. Installing high-quality attic floor insulation is the most effective and cost-efficient method to reduce thermal losses throughout your home

Technology products

Матеріали для каркасної ізоляції стін та перегородок

Stone Wool 40

These premium mineral stone wool slabs are engineered specifically for internal lining, drywall partitions, and framed structures. Being completely non-combustible and easy to install, this material creates a highly reliable and durable barrier against heat loss and ambient noise.

This versatile 40 kg/m³ density stone wool slab is optimized for non-load-bearing structural elements. Key applications include:

  • Internal Wall Insulation: Thermal lining of exterior walls from the inside.
  • Brick Cavity Walls (Three-Layer Walls): Applying internal wall insulation in brick-clad walls with a protective outer masonry face.
  • Drywall Partition Frameworks: Interior acoustic filling for gypsum board partitions.
  • Pitched Roofs and Attics: Thermal and sound insulation between and under rafters in residential lofts.
  • Floors on Joists: Thermal and acoustic lining for wooden floor structures and ceilings between stories.
  • Ventilated Facades (Low-Rise): As an inner thermal layer in double-layer insulation systems for low-rise ventilated facades.
  • Pitched Roofs, Attics and High-Slope Lofts: Thermal and sound insulation between and under rafters. Due to the optimal 40 kg/m³ density, these slabs offer excellent structural rigidity, preventing sagging or settling even in high-slope roof structures.
  • Material: Mineral (Stone) Wool
  • Density: 40 kg/m³
  • Length: 1000 mm
  • Width: 600 mm
  • Thickness: 50, 80, 100, 120, 150, 180, 200 mm
  • Reaction to Fire (Fire Class): Class A1 (Non-combustible)
  • Thermal Conductivity: λ = 0.037 W/m·K
  • Service Life: Minimum 50 years of effective operation
  • Compliance & Standards: TS EN, TS EN ISO, DSTU B V.2.7-167:2008
Матеріали для каркасної ізоляції стін та перегородок

Stone Wool 30

A premium slab material made of stone mineral wool. This insulation is entirely non-combustible and easy to install, creating a highly reliable barrier against cold and environmental noise.

Thanks to its optimized density of 30 kg/m³, this material features a lighter weight, which significantly reduces the structural load on building frameworks and simplifies transportation and handling on-site. The primary benefit of this density is its increased cost-effectiveness: due to lower raw material consumption during manufacturing, it delivers top-tier thermal efficiency at a substantially lower price point compared to heavier alternatives. This makes IZOVAT 30 an ideal, budget-friendly solution for non-load-bearing structural applications.

This lightweight slab is engineered for construction assemblies where the insulation material does not bear external mechanical loads. Key applications include:

  • Thermal and Acoustic Insulation of Exterior Walls: Internal insulation lining and acoustic filling for framed walls and partition cavities.
  • Brick Cavity Walls (Three-Layer Walls): Highly efficient core insulation inside brick-clad walls with a protective outer masonry face.
  • Pitched Roofs and Attics: Thermal lining between rafters on flat or low-slope roof and attic configurations.
  • Floors on Joists & Basements: Thermal and acoustic filling for suspended wooden floors and ceilings between stories, where the material is laid between timber beams.
  • Suspended Ceilings: Acoustic lining to maximize sound absorption and reduce airborne noise in residential and commercial spaces.

 

  • Material: Mineral Wool (Stone Wool)
  • Density: 30 kg/m³
  • Length: 1000 mm
  • Width: 600 mm
  • Thickness: 50; 80; 100; 120; 150; 180; 200 mm
  • Fire Classification: A1 (Non-combustible)
  • Thermal Conductivity: $\lambda = 0.037 \text{ W/(m·K)}$
  • Effective Service Life: Not less than 50 years
  • Quality Standards: TS EN, TS EN ISO, DSTU B V.2.7-167:2008

 

Ефективне фольговане утеплення саун та лазень зсередини

Foil-Faced Mineral Insulation Roll

Foil-Faced Mineral Insulation Roll is a high-performance thermal insulation material made from premium glass wool, laminated on one side with a durable, reinforced aluminum foil. Due to this composite matrix, the insulation operates like a thermos: the polished foil layer reflects infrared radiant heat back into the interior space while simultaneously acting as a total vapor barrier. The presence of an integrated self-adhesive foil overlap along the edges significantly streamlines and accelerates the installation process, allowing contractors to create a completely airtight, continuous, and energy-efficient insulation envelope without requiring extra joint tapes.

Engineered for maximum flexibility, low structural weight, and integrated vapor control, this foil-faced roll is widely utilized in the following applications:

  • Comprehensive Thermal & Acoustic Insulation: Deployed in apartments, private residences, and cottages to heavily reduce heat loss and maximize indoor acoustic comfort.
  • Attic & Pitched Roof Insulation: Perfectly suited for rafter insulation in attics and lofts, protecting the structural timber frame from indoor moisture condensation.
  • Fire Safety in Framed Walls: Integrated into timber and metal framed wall assemblies as a high-grade, fireproof insulation core that does not sustain combustion.
  • Siding & Curtain Wall Insulation: Applied behind exterior cladding systems, including vinyl/metal siding, glass facades, and architectural metal panels.
  • Balcony & Loggia Insulation: Ideal for transforming balconies into heated spaces, where the radiant heat reflection maximizes efficiency with a minimal insulation profile.
  • HVAC & Duct Insulation: Highly effective for wrapping air ventilation ducts, climate control shafts, and large-diameter piping systems.
  • Sauna and Steam Room Insulation: The reflective aluminum surface reflects up to 95–97% of radiant heat back into the interior, accelerating heat-up time and creating a “thermos effect.” Concurrently, the heavy-duty foil acts as an impenetrable vapor barrier, shielding timber or metal framing systems from extreme indoor humidity and hot steam.
  • Insulation of unused attic floors: The most budget-friendly solution for home thermal insulation, eliminating the need for costly full-roof insulation
  • Core Material: Glass wool (Staple fiberglass fibers)
  • Facing Type: Reinforced polished aluminum foil
  • Density Range: 9 – 18 kg/m³
  • Roll Length: 4000 – 12000 mm (depending on the specified thickness)
  • Roll Width: 1200 mm
  • Thickness Range: 50, 100, 150, 200 mm
  • Thermal Conductivity ($\lambda$): 0.035 W/(m·K)
  • Reaction to Fire (Flammability Class): Class A1 (the core fiber matrix is completely non-combustible, zero smoke production, zero flame spread)
  • Water Absorption (Partial Immersion): $\le 1$ kg/m²
  • Service Temperature Range: From $-60$ °C up to $+200$ °C
  • Compliance Standards: TS EN 13162, TS EN ISO 9001, DIN regulations (certified for premium European quality and ecological safety)
Матеріали для каркасної ізоляції стін та перегородок

Mineral Insulation Roll

Mineral Insulation Roll is a next-generation thermal and acoustic insulation material made from premium glass wool, engineered for maximum energy efficiency and reliability. The material features excellent flexibility and resilience, allowing it to fit tightly into structural frameworks and completely eliminate thermal bridging. Due to its advanced fiber structure, the insulation reliably protects buildings from heat loss and frost, withstands accidental condensation exposure, extends the service life of building assemblies, and provides top-tier structural fire protection.

Highly flexible and lightweight, this mineral insulation roll is widely integrated across multi-sector construction workflows for insulation, soundproofing, and fire protection:

  • Framed Wall Insulation: Used as a non-combustible interior core in timber and steel-framed buildings.
  • Attic & Pitched Roof Insulation: Easily fitted between roof rafters to deliver reliable protection against seasonal frost and exterior airborne noise (rain, wind, traffic).
  • Siding & Curtain Wall Systems: Perfectly suited for exterior insulation within ventilated facade systems finished with vinyl/metal siding, architectural glass, or metal cladding panels.
  • Balcony & Loggia Insulation: Highly efficient for thermal retrofitting of unheated or semi-open spaces.
  • Acoustic Interior Partitions: Deployed inside drywalls and interior partition frames to maximize sound dampening and acoustic compartmentalization in residential apartments.
  • Insulation of unused attic floors: The most budget-friendly solution for home thermal insulation, eliminating the need for costly full-roof insulation
  • Framed and Non-Load-Bearing Floors/Ceilings: Perfectly optimized for lightweight, non-load-bearing applications, including thermal and acoustic lining installed directly between floor joists, timber ceiling beams, and intermediate floors.
  • Core Material: Glass wool (staple fiberglass fibers)
  • Facing Type: Unfaced
  • Density Range: 9 – 18 kg/m³ (ultra-lightweight profile, zero dead-load stress on frameworks)
  • Roll Length: 4000 – 12000 mm (depending on the specified thickness)
  • Roll Width: 1200 mm
  • Thickness Range: 50, 100, 150, 200 mm
  • Thermal Conductivity (lambda): 0.035 W/(m·K)
  • Reaction to Fire (Flammability Class): Class A1 (completely non-combustible; zero flame spread, zero smoke production, zero toxicity)
  • Water Absorption (Partial Immersion): le 1 kg/m²
  • Service Temperature Range: From -60 °C up to $+200 °C
  • Compliance Standards: TS EN 13162, TS EN ISO 9001, DIN regulations.
Fire-resistant cement-bonded particle board (CPB)

Cement-Bonded Particle Boards (CPB)

Cement-Bonded Particle Boards (CPB) are versatile, high-strength building materials that perfectly combine the structural solidity of cement with the flexibility of wood particles. Unlike wood-based sheets that rely on synthetic adhesives (such as OSB or chipboard), CPB boards are manufactured through eco-friendly compression without the use of toxic resins, phenols, or hazardous chemical additives. This process makes the material exceptionally durable, moisture-resistant, bio-stable, and entirely safe for indoor air quality and human health. The flat, dense surface provides an ideal substrate for various finishing options, including painting, plastering, or tiling.

Engineered for multi-functional performance, cement-bonded particle boards (CPB) are heavily utilized across a wide spectrum of construction and retrofitting workflows:

  • Framed Construction: Applied as a rigid material for both exterior sheathing and interior wall lining, providing a stable, heavy-duty, and fire-resistant structural core.
  • Exterior & Interior Finishing: Used as a reliable, moisture-resistant substrate for modern facade systems, partition walls, suspended ceilings, and protective cladding.
  • Structural Fire Safety: Deployed to significantly improve the fire-resistance rating of load-bearing assemblies, utility shafts, and spatial enclosures.
  • Flooring & Interfloor Decks: Perfectly suited for dry floor screeds, continuous subfloor decking, and interfloor partitioning under various topcoats.
  • High-Moisture Environments: Due to its excellent water resistance, CPB is an outstanding solution for lining bathrooms, showers, commercial kitchens, laundries, and unheated facilities.
  • Roofing Systems: Utilized as a continuous rigid substrate for flat or sloped roofs, delivering additional mechanical strength and structural fire protection.

 

  • Material: Cement-bonded particle board (CPB)
  • Density: 1100 – 1400 kg/m³
  • Length: 3200 mm, 3000 mm, 2400 mm, 
  • Width: 1250 mm, 1200 mm
  • Thickness: 8, 10, 12, 14, 16, 20, 24, 36 mm
  • Moisture Content: 6 – 12%
  • Thermal Conductivity (λ): 0.26 W/(m·K)
  • Bending Strength (Flexural): Min 9.0 MPa (depending on board thickness)
  • Compressive Strength: Min 10 MPa
  • Frost Resistance: Minimum 50 freeze-thaw cycles (retaining over 90% of structural integrity)
  • Water Absorption (24h immersion): Max 16%
  • Organic Core Content: Approx. 8 – 10% (selected wood particles)
  • Acoustic Insulation Performance: Up to 30 dB (for a 12 mm thick board)
  • Reaction to Fire & Flammability:
    • Flammability Class: G1 (Low flammability / Flame retardant)
    • Ignitability Class: V1 (Hardly ignitable)
    • Smoke Toxicity Index: T1 (Low hazard; does not emit toxic gases or sustain independent combustion)
  • Resistance to Mold & Fungi: Exceptionally high, driven by the natural alkaline environment of the cured cement matrix.
Non-combustible Class A1 fiber cement board (FCB) for protecting attics and framed structures from fire

Smooth Fiber Cement Boards (FCB)

Smooth Fiber Cement Boards (FCB) are advanced, high-tech composite building materials manufactured from premium-grade cement, mineral fillers, and reinforcing cellulose fibers. The defining feature of this product line is its completely smooth and flat surface without any embossed textures. This makes the boards an impeccable, dimensionally stable substrate for any premium architectural or decorative finish, including painting, plastering, or tiling. Offering an ideal combination of exceptional mechanical strength, resistance to harsh environmental impacts, and absolute non-combustibility, smooth fiber cement boards are perfect for clean, modern, and minimalist architectural designs

Highly versatile and reliable, fiber cement boards (FCB) are heavily integrated into commercial, industrial, and residential construction due to their superior performance properties:

  • Rainscreen Ventilated Facades: An ideal cladding solution for exterior wall systems, providing robust protection against driving rain, wind loads, and UV radiation while ensuring building longevity.
  • Decorative Architectural Finishes: Used to design high-aesthetic, durable exterior and interior surfaces capable of mimicking natural textures without their structural vulnerabilities.
  • Exterior & Interior Wall Cladding: Applied to create high-traffic, heavy-duty wall surfaces that demand extreme moisture resistance and protection against mechanical damage.
  • Fire Safety & Fireproofing: Classified under the non-combustible (NG) category, FCBs are indispensable for structural fire barriers, partition walls, and utility shaft enclosures to maximize fire-resistance ratings.
  • High-Moisture Environments: Perfectly suited for lining bathrooms, indoor swimming pools, commercial showers, saunas, and basements due to zero water degradation and immunity to mold or rot.
  • Roof Substrates & Ceiling Linings: Utilized as a rigid, fireproof substrate beneath roofing systems and for interior ceiling soffits, particularly within attic spaces and escape routes.

 

  • Material: Fiber cement board (FCB)
  • Density (Average): 1500 – 1600 kg/m³ (high density ensures superior impact resistance)
  • Thickness Range: 6, 8, 10, 12, 14, 16, 20, 24, 36 mm
  • Standard Dimensions: 3200×1200 mm, 3000×1200 mm, 2400×1200 mm (custom sizes available upon request)
  • Flexural Strength (Bending, Dry State): MPa
  • Compressive Strength: MPa (indicates extreme resistance to compressive loads)
  • Modulus of Elasticity: MPa (determines structural rigidity and shape retention)
  • Surface Hardness: MPa (highly resistant to scratches, localized impacts, and vandalism)
  • Water Absorption (24-hour immersion): by weight (guarantees dimensional stability in humid climates)
  • Frost Resistance: Minimum 150 freeze-thaw cycles without degradation (suitable for extreme sub-zero conditions)
  • Thermal Conductivity ():35 – 0.45 W/(m·K)
  • Acoustic Insulation Performance: Airborne noise reduction up to 32 dB (for a 12 mm thick board)
  • Reaction to Fire & Flammability: Class NG (Non-combustible; does not ignite, smoke, or sustain flame propagation)
  • Service Life: 50+ years when installed in accordance with technical guidelines.

Other Products

Expanded Clay

Expanded clay is a lightweight, porous, and highly eco-friendly construction material produced by the rapid thermal firing of easily fusible clay deposits at extreme temperatures. Thanks to its unique cellular core structure and dense, vitrified outer shell, it seamlessly combines an exceptionally low weight with outstanding thermal and acoustic insulation performance. It is a versatile, long-lasting aggregate that does not rot, burn, or degrade under chemical exposure.

Expanded clay is a multifunctional material widely utilized across various construction, engineering, and agricultural sectors:

  • Residential & Civil Construction: Employed as a lightweight aggregate for structural and insulating concrete (expanded clay concrete) and masonry wall blocks, drastically reducing the total structural weight without compromising overall load-bearing capacity.
  • Flooring & Structural Ceilings: Ideally suited for building lightweight thermal insulation screeds, loose-fill dry floor systems, and insulating intermediate floors, attics, and sloped loft spaces.
  • Infrastructure & Utility Networks: Used as an efficient backfill thermal insulation barrier for building foundations, basements, retaining walls, and underground heating pipelines to minimize regional heat losses.
  • Road Construction: Applied to create specialized lightweight drainage and frost-resistant insulating layers in embankments for highways and railways, particularly over soft, waterlogged, or shifting soils.
  • Landscape Architecture: Used as a decorative ground cover for flower beds, alpine rock gardens, pathways, and to shield the topsoil from excessive evaporation and weed growth.
  • Horticulture & Agriculture: Serves as a clean, eco-safe drainage layer for plant root systems in indoor floriculture, greenhouse farming, and hydroponics, optimizing the vital water-air balance.
  • Grading / Fraction Sizes: 0–5 mm (expanded clay sand), 5–10 mm, 10–20 mm, 20–40 mm (gravel/coarse aggregate).
  • Bulk Density: $300 \text{ to } 450 \text{ kg/m}^3$ (depending directly on the fraction size and strength grade).
  • Thermal Conductivity: $\lambda = 0.10 – 0.18 \text{ W/(m·K)}$.
  • Crushing / Compressive Strength: $1.0 \text{ to } 5.5 \text{ MPa}$ (grades ranging from P35 to P125).
  • Fire Classification: Class A1 (Completely non-combustible material; withstands exposure temperatures exceeding 1000°C).
  • Frost Resistance: Exceeds 25 complete freeze-thaw cycles (F25 status).
  • Sulfate Content (as $\text{SO}_3$): 0.3%
  • Eco-Safety: 100% natural composition with zero toxicity and background radioactivity.
Продукція для утеплення фасадів зі штукатурним шаром

Extruded Polystyrene XPS (Straight Edge)

Extruded polystyrene (XPS) with a straight, smooth edge configuration. These boards are designed to butt tightly against one another during installation. They are perfectly optimized for single-layer thermal lining on perfectly flat substrates or for heavy-duty multi-layer insulation systems installed with staggered, offset joints to minimize thermal bridging.

Characterized by an exceptionally high compressive strength and superb resistance to chemically aggressive subterranean environments, XPS is an indispensable element in heavy civil and commercial engineering:

  • Foundations & Plinths (Basements): Provides robust, long-term protection for underground structures against deep soil freezing, frost heave, and direct hydrostatic groundwater pressure.
  • Flooring Systems: Serves as the ultimate rigid substrate beneath heavy concrete screeds, high-load industrial floors, and integrated radiant underfloor heating systems.
  • All Roof Configurations: Ideal thermal solution for conventional flat roofs, inversion (inverted) roofs, ballasted trafficable decks, and extensive green roofs.
  • Walls & Facades: Highly effective as core thermal insulation inside cavity walls (three-layer masonry), as well as exterior insulation for walk-out basements and plinths beneath protective render/stucco systems.
  • Infrastructure Engineering: Acts as a heavy-duty frost-protection barrier preventing frost heave under highway pavements, airport runways, and railway track beds.
  • Thickness Range: 20–100 mm
  • Thermal Conductivity: Ultra-low coefficient (lambda = 0.029 – 0.034 W/(m·K), guaranteeing maximum energy retention.
  • Water Absorption: Virtually zero (less than 0.3%–0.5% by volume); the material maintains 100% of its thermal resistance even when fully submerged or exposed to saturated soil.
  • Compressive Strength: High-load capacity (ranging from 200 to 500 kPa at 10% structural deformation), easily withstanding continuous structural and mechanical loads.
  • Apparent Density: 25 – 38 kg/m3 (Note: This optimal density range ensures the perfect equilibrium between maximum compressive resistance and ultra-low thermal conductivity).
  • Temperature Operational Range: Stable performance under extreme environmental fluctuations from -50 °C up to +75 °C.
  • Effective Service Life: Exceeds 50 years of continuous operation within structural assemblies.
  • Eco-Safety & Bio-Resistance: Safe for human health, entirely chemically inert, and fully resistant to decay, mold, mildew, and microbial growth.

System Purpose

The primary purpose of installing attic floor insulation includes four critically important functions:

  • Energy Efficiency: Up to 25% of heat can be lost through an uninsulated roof. Premium attic floor insulation helps retain heat, significantly reducing heating and air conditioning expenses.
  • Acoustic Protection: Mineral wool effectively absorbs external noises, such as heavy rain, hail, or street sounds, creating a quiet and serene environment inside the living spaces below.
  • Optimal Microclimate: Reliable insulation maintains stable indoor temperatures, preventing sudden fluctuations and interstitial condensation, which protects the structural elements from mold and mildew.
  • Fire Safety: Mineral wool, as well as Fiber Cement Boards (FCB) and Cement-Bonded Particle Boards (CBPB), are non-combustible building materials (Class A1/Non-combustible), drastically improving the overall fire rating of the entire structure.

Key Advantages

Maximum Cost Savings & Fast ROI

If the attic space is not utilized as a living loft, installing attic floor insulation directly onto the floor deck is the most budget-friendly project path. Your material and labor costs will be significantly lower compared to insulating the entire pitched roof structure.

Reduced Installation Complexity

Laying insulation materials on a horizontal surface does not require complex engineering solutions, high-altitude operations, or fixing panels between sloped rafters. You simply roll out mats or lay down slabs, which heavily reduces installation labor costs.

Economical Material Solutions

For horizontal attic floor insulation, lower-density rolled materials or lightweight slabs can be used. These options are more affordable yet perfectly perform their thermal function. Furthermore, you do not require the comprehensive material checklist needed for a complete pitched roof “insulation sandwich.”

Rapid Return on Investment

Due to the substantial drop in heating and cooling bills, the capital invested in attic floor insulation is fully recovered within just a few heating seasons.

Creating the Ideal Microclimate

An engineered thermal layer on the attic floor creates a bulletproof barrier that separates the unconditioned cold air of the roof void from the conditioned warm air of the residential rooms.

  • Winter Protection: The insulation prevents warm indoor air from escaping, keeping the heat inside and cutting utility costs.
  • Summer Defense: During hot months, it blocks scorching radiant heat accumulated under the sun-baked roof from penetrating down into the living areas, maintaining a cool and refreshing atmosphere.

Frequently Asked Questions

It is critical to protect the insulation material from direct moisture and ambient precipitation (rain, snow). The product must be stored in its original waterproof packaging on a raised platform (pallets). Additionally, mechanical damage to the wrapping must be avoided.

Other Technologies

Improving the Fire Safety of Pitched Roofs and Attics

Pitched Roof and Attic Insulation

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