What are the best build-up systems and finish options for steel frame houses and extensions?
Welcome to our guide on wall build-ups and external finishes for steel frame constructions. When designing a steel frame house or extension, selecting the appropriate wall build-up is crucial for optimising thermal performance, structural integrity, and compliance with building regulations.
We have a variety of exterior wall options, including brick, masonry, or external render, all of which will be installed by your chosen builder on-site, after Shanette have built the steel frame structure of your project. You and your Engineer can choose between several different insulation build-ups to suit your project’s needs. We offer two main choices, Hybrid Frame and Warm Frame.
While masonry-based wall build-ups remain the most popular choice, we also offer alternative options to achieve distinctive aesthetics and enhanced functionality. These include seamless cladding for a sleek, contemporary finish, external insulation systems with acrylic render for improved thermal performance and design flexibility, Fortex PVC foam board, and burnt larch for a unique, rustic charm. With this extensive range of finishes, your steel frame home can be tailored to your vision, delivering bespoke architectural appeal that truly stands out.
Key Differences between Hybrid and Warm Frame
The primary distinction between Hybrid Frame and Warm Frame systems lies in the location of the insulation :
1. Hybrid Frame
2. Warm Frame
For the Hybrid Frame, insulation is installed both within the 100 mm steel frame (to be fitted on-site by others) and on the external face of the frame, which is factory-fitted. Common external insulation materials include foil-backed PIR boards, Rockwool mineral wool, or metal-faced insulated sandwich panels – each offering unique advantages depending on project needs.
For the Warm Frame, insulation is installed on the exterior face of the Shanette steel frame, creating a continuous, uninterupted thermal layer. We can priovide guidance on U-values for both Warm Frame and Hybrid Frame wall types to help your building achieve the best possible energy rating.
Kilsaran External Walling Insulation Explainer Video
Explore Top Finishes for Steel Frame Homes
Cladding such as Burnt Larch and Composite Panels offer a versatile and efficient solution, combining insulation and exterior finish in a single layer. Ideal for fast-track construction.
Standing seam cladding combines modern aesthetics with exceptional durability. Ideal for both contemporary and traditional designs, it ensures long-lasting protection.
PIR insulation offers superior thermal performance, making it an excellent choice for energy-efficient buildings. It provides a seamless and effective barrier against heat loss.
Rendering provides a durable and attractive finish for steel frames, offering protection against the elements while enhancing visual appeal.