Rated ExcellentActis insulation includes reflective honeycomb panels and multifoil rolls for improving the thermal performance of roofs, walls and other approved building assemblies. The Hybris panel has a declared thermal conductivity of 0.033 W/mK, while HControl Hybrid provides a core thermal resistance of 1.90 m²K/W and also acts as a vapour control layer. Our Actis collection features Hybris, HControl Hybrid and Eolis HC.
| Product | Listed format | Verified core thermal property | Primary role |
|---|---|---|---|
| Hybris | 1,200 × 1,145 mm panels; thickness varies | λ 0.033 W/mK | Insulation between framing |
| HControl Hybrid | 45 mm × 1.6 m × 6.25 m; 10 m² roll | R 1.90 m²K/W | Insulating vapour control layer |
| Eolis HC | 135 mm × 1.5 m × 8 m; 12 m² roll | R 4.35 m²K/W | Integrated reflective insulation and airtightness |
Actis insulation includes reflective honeycomb panels and multifoil rolls for improving the thermal performance of roofs, walls and other approved building assemblies. The Hybris panel has a declared thermal conductivity of 0.033 W/mK, while HControl Hybrid provides a core thermal resistance of 1.90 m²K/W and also acts as a vapour control layer. Our Actis collection features Hybris, HControl Hybrid and Eolis HC.
| Product | Listed format | Verified core thermal property | Primary role |
|---|---|---|---|
| Hybris | 1,200 × 1,145 mm panels; thickness varies | λ 0.033 W/mK | Insulation between framing |
| HControl Hybrid | 45 mm × 1.6 m × 6.25 m; 10 m² roll | R 1.90 m²K/W | Insulating vapour control layer |
| Eolis HC | 135 mm × 1.5 m × 8 m; 12 m² roll | R 4.35 m²K/W | Integrated reflective insulation and airtightness |
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Actis Insulation stands out as a trusted provider of high-quality insulation solutions, designed to meet diverse construction and renovation needs. From reflective panels to multi-layered rolls, Actis offers innovative products that enhance thermal performance, energy efficiency, and comfort. Here, we explore the key products in the Actis range and their practical applications, helping you select the best insulation for your project.
Choosing the right Actis product for your build
Actis products do different jobs. Hybris is a structured reflective insulation panel designed to sit in suitable framed spaces. HControl Hybrid is an insulating vapour control layer on the warm side of an assembly. Eolis HC combines a thicker insulation core with an integrated airtight layer. Treat these as separate construction components, not interchangeable foil rolls. For roof insulation and timber-frame walls, check the complete build-up, the location of the vapour control layer and the manufacturer’s application guide before ordering.
Start with the available depth between rafters or studs. Next, identify whether you need a primary insulation layer, a warm-side airtight layer, or a combined solution. Finally, check the complete thermal design. Reflective surfaces deliver their stated system benefit only when the specified adjacent air cavities are present. A foil surface pressed directly against another material cannot automatically claim the same resistance as a tested air-space arrangement.
Actis range comparison
| Choice | Best reason to specify | Watch out for |
|---|---|---|
| Hybris | Framed cavities where a panel fits the measured depth | Allow for accurate cutting and continuous coverage |
| HControl Hybrid | Warm-side vapour control with additional thermal resistance | Seal laps and penetrations as instructed |
| Eolis HC | Thicker integrated layer for approved wall or roof details | Check available installation depth and the required fixing method |
| Boost’R Hybrid | Reflective breathable external membrane in a designed system | Not a substitute for an internal vapour control layer |
Thermal figures: core resistance versus installed system
For a single layer, compare declared core thermal resistance in m²K/W. For an entire wall or roof, compare calculated thermal transmittance in W/m²K. These quantities are not interchangeable. A product combined with air cavities can have a higher reported resistance than its core alone; the cavities must match the test and the actual installation. Framing, plasterboard, membranes and thermal bridges affect the final calculation.
| Product / configuration | Declared thermal value | Basis |
|---|---|---|
| Hybris | 0.033 W/mK | Declared conductivity; calculate core R from specified thickness |
| HControl Hybrid core | 1.90 m²K/W | Manufacturer brochure |
| HControl Hybrid + two cavities | 3.20 m²K/W horizontal heat flow; 2.80 m²K/W upward vertical heat flow | EN 16012 test arrangement |
| Eolis HC core | 4.35 m²K/W | Manufacturer product specification |
For 90 mm HYBRIS, ACTIS publishes a core thermal resistance of 2.75 m²K/W. This is a declared material-layer value, not the U-value of a complete roof or wall. Use the published value for the exact thickness rather than substituting a simplified thickness/conductivity calculation.
Which one do I need?
For a timber-frame wall that already has an approved external breathable membrane, begin by checking Hybris for the stud cavity and HControl Hybrid for warm-side vapour control. For a roof where the design calls for an integrated thicker insulation roll, examine Eolis HC. Where the specification calls for an external reflective breather membrane, investigate Boost’R Hybrid separately. If the priority is the thinnest possible build-up, compare tested complete systems rather than isolated foil claims. The right answer is the product combination that meets the project calculation, condensation design and fitting constraints.
Can reflective insulation replace conventional insulation?
This is a useful question because the answer depends on the tested construction, not the appearance of the foil. Some reflective products contain a meaningful insulating core; others are primarily membranes. Hybris has a declared conductivity and can be assessed as an insulation layer. HControl Hybrid has its own declared core resistance but achieves a higher system resistance when paired with specified cavities. An untested thin foil layer should not be assumed to equal a thick mineral wool or PIR layer.
Ask for the declared core performance, the installation configuration used for any air-cavity value, and the calculation for your actual roof or wall. Do not add the headline R-values of separate products and assume the result represents a compliant complete build-up. Framing and junctions must be assessed. Where thermal performance is critical, use the manufacturer’s current details and a competent designer’s calculation.
Installation details that affect performance
Before installation, inspect the substrate and resolve leaks, damp and damaged timber. Fit panels closely to the framing without leaving unintended gaps. Follow Actis guidance for cutting, supporting and securing the chosen product. Keep the required ventilation routes open. Where a vapour control layer is specified, continuity is critical: tape joints with the approved system tape and detail the membrane around windows, sockets, pipes and service penetrations.
A service void can reduce the number of penetrations through a warm-side vapour control layer. Coordinate plasterboard fixings, battens and electrical work before closing the wall or roof. Do not assume ordinary scrim tape provides an airtight seal. In roof work, the position and permeability of the underlay matter, so follow the relevant Actis roof application guide rather than copying a wall detail.
Moisture control, fire performance and approvals
A warm-side vapour control layer limits the movement of indoor moisture into a colder part of the structure. A breathable external membrane serves a different purpose. Reversing their positions can create a condensation risk. Follow the designed sequence of layers and verify that the roof or wall construction is appropriate for the local exposure and intended use. Seek project-specific advice for unusual roofs, historic fabric and high-humidity rooms.
Do not describe an entire assembly as fire-rated because it contains a particular insulation product. Reaction-to-fire classifications and fire-resistance periods describe different tests. Check the current declaration of performance and any tested wall or roof assembly before making a fire claim. Also check the applicable Building Regulations and any relevant third-party approvals.
Actis Hybris Reflective Insulation Panels
The Actis Hybris panels are renowned for their superior thermal performance and versatility. These reflective insulation panels are ideal for walls, ceilings, and floors, providing consistent energy efficiency and thermal resistance.
Key Features:
- Exceptional R-Value: Delivers high thermal resistance for superior insulation.
- Versatility: Suitable for roofs, walls, and floors in both new builds and retrofits.
- Efficient Temperature Regulation: Maintains a comfortable indoor climate across seasons.
Specifications:
- Dimensions: 1200mm x 1145mm.
- Ideal for: Home renovations, new constructions, and projects demanding robust thermal insulation.
Selection Tip: Evaluate the area of application and required thickness to ensure the chosen Hybris panel meets your thermal needs.
HControl Hybrid Reflective Membranes
The HControl Hybrid membrane is a dual-function insulation solution, combining thermal insulation and airtightness in one product. Its innovative design is perfect for enhancing energy efficiency and reducing air leakage in homes.
Key Features:
- Dual-Functionality: Provides excellent thermal insulation while ensuring airtightness.
- Ease of Installation: Lightweight and easy to handle for seamless application.
- Wide Applicability: Suitable for roofs, walls, and ceilings.
Specifications:
- Roll Dimensions: 45mm x 1.6m x 6.25m (covering 10m²).
- Ideal for: Projects where thermal insulation and air control are critical.
Selection Tip: Use this membrane in areas where air leakage prevention and thermal management are equally important.
Eolis HC Multi-Layered Insulation Rolls
The Eolis HC insulation rolls provide robust thermal performance through a multi-layered configuration. These rolls are designed to adapt to varied climatic conditions, making them ideal for residential and commercial applications.
Key Features:
- Multi-Layer Structure: Offers enhanced thermal stability and consistent insulation.
- Flexible Application: Suitable for walls, roofs, and other spaces requiring efficient thermal control.
- High Thermal Performance: Maintains indoor comfort regardless of external conditions.
Specifications:
- Dimensions: 135mm x 1.5m x 8m (covering 12m²).
- Ideal for: Projects requiring adaptable and high-performing insulation materials
Selection Tip: Choose Eolis HC for areas with fluctuating temperatures or where enhanced thermal stability is required.
Frequently asked questions
What is Actis insulation used for?
Actis insulation is used in specified roof and wall assemblies to reduce heat loss and improve building comfort. The range includes Hybris panels, HControl Hybrid insulating vapour control layers and Eolis HC rolls. Choose the product according to the required layer, available depth and approved installation detail, rather than choosing solely by the reflective finish.
Is Actis Hybris suitable for a pitched roof?
Hybris can be specified in pitched-roof constructions covered by Actis guidance. Check rafter depth, underlay type, required air spaces and the overall condensation strategy before fitting. A designer should assess the complete roof thermal performance, including timber bridging. Do not block any ventilation route that the roof construction requires.
What is the difference between Hybris and HControl Hybrid?
Hybris is a structured reflective insulation panel intended to fill suitable framed spaces. HControl Hybrid is a thinner insulating vapour control layer intended for the appropriate warm-side position. They can be combined in an approved system, but they are not substitutes for one another. Check the manufacturer’s detail for the required cavities and joints.
What is the difference between Eolis HC and Hybris?
Eolis HC is an integrated thicker reflective insulation roll with an airtight function, while Hybris is supplied as panels for suitable framed cavities. The choice depends on the assembly, available depth and the location of the airtight or vapour control layer. Compare the declared core properties and current fitting guides before specifying either product.
Does reflective insulation need an air gap?
Reflective surfaces need a suitable adjacent air space to deliver the additional thermal resistance attributed to that space. A manufacturer may also declare a core resistance that does not rely on the same cavity arrangement. Use the exact tested configuration and do not apply a two-cavity figure to an installation where the cavities are missing.
Can Actis insulation be used with mineral wool or PIR?
An Actis layer may form part of a combined system with other insulation, subject to the design. The assembly still needs a proper thermal calculation and moisture assessment. Check compatibility, fixing, membrane positions and any required cavities. Simply adding separate product resistance figures does not establish the performance of a real framed wall or roof.
Is HControl Hybrid a vapour barrier?
HControl Hybrid is designed as an insulating vapour control layer and airtightness component. Its joints, edges and service penetrations must be detailed to maintain continuity. The appropriate location is determined by the wall or roof design. Consult the current Actis application guide before using it as part of a refurbishment or unusual construction.
Can I install Actis insulation myself?
Some Actis products can be handled by experienced DIY installers, but performance depends on the correct assembly and careful detailing. Measure the cavity, follow the product-specific fixing instructions, seal the designated joints and preserve required ventilation. For regulated work or a complex roof, obtain professional design and installation advice before covering the insulation.
How do I calculate how many rolls I need?
Measure the area to be covered and divide it by the usable coverage per roll after allowing for overlaps and cutting. The HControl Hybrid listing gives a nominal roll area of 10 m², while Eolis HC is listed at 12 m². Confirm the current product dimensions and installation lap requirements before ordering.
Does Actis insulation stop condensation?
Insulation can help keep internal surfaces warmer, but no insulation product alone guarantees freedom from condensation. The position and continuity of vapour control layers, external membrane permeability, ventilation and thermal bridging all matter. Use an appropriate moisture assessment and the manufacturer’s specified wall or roof build-up rather than relying on a general anti-condensation claim.
Is Actis insulation fire resistant?
Fire performance must be checked for the exact product and complete construction. Reaction-to-fire classification is not the same as a wall or roof fire-resistance rating. Ask for the current declaration of performance and tested assembly evidence. Do not assume that a reflective foil finish makes a product non-combustible or fire-rated.
