Structural lightweight concrete window subframe The window opening, structural at last.
ANIGMA® is the one-piece subframe that becomes part of the wall: stable, fire-resistant, insulating. On installation day and for years to come.
For contractors, specifiers and window installers who refuse to compromise.
Beyond the subframe. Part of the structure.
- One-piece structural subframe in lightweight concrete
- Designed to last
- Built to change the way window openings are made
The problem
The window opening is one of the most critical points in any building.
Conventional systems focus on low weight, speed and initial insulation. On installation day, they work. The trouble starts later: movement, settlement and installation tolerances.
Over time, you may see:
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Distortion
The subframe follows the building’s movement and goes out of square.
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Settlement
Settlement loads end up on the most vulnerable point.
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Water ingress
Small gaps turn into paths for water.
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Installation problems
Tolerances and corrections as the work goes on.
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Unplanned maintenance
Call-backs nobody planned for after handover.
In construction, every surprise means cost, delay and liability.
The solution
Not a better subframe. A different approach.
ANIGMA doesn’t just fill a window opening: it turns it into a stable, safe and durable structural element.
Lightweight concrete forms a solid, compact element that works together with the masonry, not as a separate component. Once installed, ANIGMA is an integral part of the building, with maintenance comparable to that of an ordinary concrete wall.
- No joints.
- No weak points.
- No structural compromise.
What makes ANIGMA different
Four promises that last.
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Built to last
Maintains structural stability and performance over the long term. Designed to last 10, 20 years and beyond.
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Stands up to fire
Lightweight concrete is inherently fire-resistant and gives the building and its occupants greater passive protection.
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A stable part of the building
One body with the masonry: it doesn’t move, it doesn’t distort.
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Insulates – and keeps on insulating
Reduces thermal bridging and improves energy efficiency and indoor comfort.
The comparison
Day-one performance, or performance that lasts?
| Aspect | Conventional systems | ANIGMA |
|---|---|---|
| Material | Lightweight, often combustible | Lightweight concrete: solid and fire-resistant |
| Aim | Low weight, speed, initial insulation | Long-term structural stability and performance |
| Relationship with the masonry | A separate component | One body with the masonry |
| Over time | Distortion, settlement, water ingress | Doesn’t move, doesn’t distort, protects against water ingress |
| Maintenance | Unplanned call-backs | Same as an ordinary concrete wall |
| Dimensions for windows and sills | Site visits and on-site surveys | Supplied by ANIGMA |
While others talk about day-one performance, ANIGMA talks about performance that lasts. Because a system’s real value shows years later.
On site
We give you the dimensions. No more site surveys.
With ANIGMA you receive the dimensions for the window, roller shutter, insect screen and sills. Window fabricators and sill suppliers can go into production without visiting site to measure up – so speed of delivery becomes a guarantee.
Dimensions supplied by ANIGMA
- Window
- Roller shutter
- Insect screen
- Window sills
Why contractors choose ANIGMA
- Fewer errors and surprises during installation
- Faster work, with more control
- Fewer corrections, less rework and lower indirect costs
- Maximum holding strength for mechanical and chemical fixings
- High resistance to the knocks and loads of site work
- Trades that are easier to coordinate
- A more reliable building handed over to the client
Technical data
The numbers that matter.
- Thermal conductivity (λ)
- 0.074 W/mK
- Thermal transmittance (U)
- 0.24 W/m²K
Values declared by the manufacturer.
On site
ANIGMA on site.
From the opening in the wall to the finishing: the ANIGMA subframe as it looks once installed.
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01 Set into the opening The subframe fitted into an existing façade, before the window and finishes. -
02 Roller shutter box Subframe installed in a clay block wall, with the roller shutter box open. -
03 External insulation External wall insulation (ETICS) and corner beads applied around the opening with the subframe.
Who it’s for
For people who build – and want to build it once.
FAQ
Frequently asked questions
What is ANIGMA and how is it different from a conventional one-piece subframe?
ANIGMA is a structural one-piece window subframe in lightweight concrete. Conventional systems focus on low weight, speed and initial insulation; ANIGMA works together with the masonry and becomes part of the building, so it keeps its stability and performance over the long term.
Do the window fabricator and sill supplier need to visit site?
No. ANIGMA comes with the dimensions for the window, roller shutter, insect screen and sills, so suppliers can go into production without measuring up on site.
What is the thermal performance?
Thermal conductivity λ = 0.074 W/mK and thermal transmittance U = 0.24 W/m²K.
Is ANIGMA fire-resistant?
Yes: lightweight concrete is inherently fire-resistant and offers more passive protection than the lightweight, combustible materials common on the market.
It’s concrete – how heavy is it? How is it handled?
ANIGMA is made from a mix with maximum weight reduction, designed to stay easy to handle on site. For large openings there is ANIGMA in KIT, supplied as modular components that are easy to transport.
Request a quote
Project about to start on site? Let’s talk.
Tell us about the project and we’ll reply within 2 working days with a tailored proposal.