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Reducing corrosion at the cut edges of verge flashings

Barge flashings protect the end of the roof covering and give the gable a straight line. However, their edges and fixing points are just as important as the wide, visible surface. That is where to look for the effects of incorrect cutting or installation damage. A well-chosen sheet metal is the beginning of a durable solution. It still needs the right shaping, correct installation and subsequent inspection. Barge flashings are made from sheet metal with a specific metallic coating, and often an organic coating as well. These layers are intended to protect the steel from environmental influences. Their type and condition must be taken into account when selecting the material. The term thick sheet metal alone does not describe the surface resistance.

By |2026-11-15T03:03:21+01:002025-05-14|Building guide|Comments Off on Reducing corrosion at the cut edges of verge flashings
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Mansard roofs: advantages and drawbacks for a house

A mansard roof is worth considering when you want more comfortable attic space and a distinctive house form, but you must accept a more complex structure, flashings and insulation. Before deciding, check the cross-sections after all layers are installed, the position of supports and how water drains across the change in pitch. Also compare complete solutions covering the roof covering, insulation and attic finish, not just the material price. Leave the final shape and angles to the designer.

By |2026-11-14T22:54:06+01:002025-05-07|Building guide|Comments Off on Mansard roofs: advantages and drawbacks for a house
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Where is it worth using insulated wall panels with a mineral wool core?

Insulated wall panels with a mineral wool core are worth considering where fire requirements and rapid building enclosure are of major importance. They are used in industrial halls, warehouses and selected technical rooms. However, the building name alone does not determine the choice of core. What matters is the wall design, its fire resistance, thermal insulation and method of support. A mineral wool panel is not a ready-made solution to every fire protection problem. Mineral wool panels are a natural candidate for enclosing buildings where limiting the contribution of combustible materials is important. They can serve as external and internal walls. This applies to many production and warehouse halls.

By |2026-11-14T09:54:26+01:002025-05-04|Building guide|Comments Off on Where is it worth using insulated wall panels with a mineral wool core?
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Planning window positions to bring daylight into a steel building

A bright steel hall is more convenient to use, but the number of windows does not describe the quality of the lighting. What matters is where the light reaches and how it changes during the day. A rack can obscure a well-placed glazing, and sun falling directly on a workstation can make work difficult. Daylighting must therefore be planned together with the interior. Detail inspection needs different light from forklift traffic, and storage needs yet another. The layout of workstations should be included in the design brief. A steel hall intended for people to work in requires an assessment of suitable lighting conditions. A bright façade alone or a large area of transparent covering does not provide such a guarantee.

By |2026-11-15T03:02:42+01:002025-04-28|Building guide|Comments Off on Planning window positions to bring daylight into a steel building
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PIR, EPS, XPS or mineral wool? When thin insulation delivers the greatest benefit

PIR has a clear advantage where high thermal resistance is needed at low thickness. This does not mean it is superior in every application. EPS can be cost-effective, XPS under specific moisture and pressure conditions, and mineral wool where fire or acoustic requirements apply. A good choice follows from the installation location and the properties of the specific product. Lambda alone does not describe the whole insulation. A low terrace threshold, a short eaves overhang or a small room can limit insulation thickness. In such places PIR achieves greater resistance than many materials of the same thickness. For example, a 100 mm layer at a lambda of 0.022 W/(m·K) has a resistance of approximately 4.55 m²K/W.

By |2026-11-14T12:15:48+01:002025-04-20|Building guide|Comments Off on PIR, EPS, XPS or mineral wool? When thin insulation delivers the greatest benefit
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What does a laminate facing do in a sandwich panel for agricultural buildings?

Glass-fibre-reinforced laminate can replace the internal steel sheet in selected roof panels for agriculture. It primarily changes the surface exposed to moisture and the building environment. It is not an additional type of wool nor a replacement for the PIR core. When selecting, the resistance of the specific facing, the documents for the entire panel and the cleaning rules must be checked. The name laminate alone does not confirm suitability for every cowshed or piggery. In such a solution, the external roof facing may be profiled steel, the middle is the insulating core, and laminate is present on the inside. The composite contains glass fibres embedded in plastic. This is a different construction from a typical steel–core–steel panel.

By |2026-11-14T09:56:19+01:002025-04-13|Building guide|Comments Off on What does a laminate facing do in a sandwich panel for agricultural buildings?
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What determines the support spacing for insulated wall panels?

The support spacing for an insulated wall panel follows from the loads and the parameters of the specific product. The core, the thickness of both facings, the support arrangement, the colour and the permissible deflection all matter. The fixings and fire requirements must also be checked. There is no single safe distance suitable for all 100 mm panels. Reading a table only makes sense when its assumptions match the actual project. The wall works under wind pressure and suction. The values depend on the building, its location and the façade zone. Corners and edges may require different verification than the central field. Self-weight and the effect of temperature are additional factors. Loads should not be chosen on the feeling that the structure stands in a calm area.

By |2026-11-14T12:17:39+01:002025-04-12|Building guide|Comments Off on What determines the support spacing for insulated wall panels?
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How to size and choose gutters for a metal roof

Gutters for a metal roof should be selected primarily by the amount of water drained, the roof geometry and the arrangement of outlets, not by the building's total area alone. It is worth establishing the water path right down to the point where it is received at ground level. Prepare a roof plan with eaves dimensions, roof pitch angles and the positions of valleys, and mark the possible routes for downpipes. Check that the chosen system includes all necessary components, including unusual corners and transitions. Remember that a single gutter run may collect water from different parts of the roof, so the total area is not enough to determine the size of each section.

By |2026-11-14T16:09:23+01:002025-04-05|Building guide|Comments Off on How to size and choose gutters for a metal roof
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How do you flash a chimney on a trapezoidal steel roof?

A watertight chimney flashing must direct water onto the roof covering and close off its path behind the sheet metal. The arrangement of the aprons, the connection to the chimney and the underlay layer are what matter. Sealant alone does not replace these elements. The detail is selected according to the chimney's position on the roof slope, the height of the trapezoidal profile and the chimney's construction. Particular care must be taken with prefabricated system chimneys, which must not be cut arbitrarily. Measure the width and length of the chimney and the distance from the ridge. Check the roof pitch, the sheet profile and the condition of the substrate. A chimney located close to the ridge requires different water management than a wide chimney in the middle of a long roof slope. Behind its upper wall, a larger stream of rainwater and sliding snow may accumulate.

By |2026-11-14T09:50:41+01:002025-04-03|Building guide|Comments Off on How do you flash a chimney on a trapezoidal steel roof?
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How to assess the environmental impact of a metal roof

A metal roof can be a sensible environmental choice, but only if you assess it across the whole life cycle rather than the material alone. Instead of relying on a general claim about steel recycling, check which stages the available environmental declaration covers, whether the data are comparable and whether they relate to equivalent roof solutions. Also consider waste reduction when ordering, the choice of coating and maintenance, as these decisions affect the actual impact. Compare products that serve the same function and intended service life.

By |2026-11-14T19:19:31+01:002025-04-01|Building guide|Comments Off on How to assess the environmental impact of a metal roof
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