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How to prepare a metal roof for painting

Painting a metal roof makes sense only when the covering is technically sound, not when it is meant to replace a repair. Before choosing a renovation system, assess the continuity of the sheeting and the stability of its fixing, identify corrosion and check the adhesion of the old coating. Flashings, fasteners and the layers beneath the sheeting also need assessment, because a leaking detail will remain the cause of the leak. Establish which areas need cleaning, preparation or replacement, and compare this with the purchase documentation for the material. Where the old finish is unknown, an adhesion test on a small area settles more than general assumptions.

By |2026-11-14T20:13:58+01:002025-09-12|Knowledge base|Comments Off on How to prepare a metal roof for painting
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How a roof valley drains the junction between two slopes

A roof valley needs stable support, a continuous underlay and a sufficiently wide drainage path so that water from both slopes can flow freely to the eaves. The most common problems arise from screws placed in the water course, cut pieces that are too narrow, and leaves blocking the valley. Before covering, it is worth checking the geometry where the slopes meet, the evenness of the cut line and the placement of fixings outside the main flow. Also make sure the lower end of the valley discharges water correctly into the gutter and that the membrane beneath the covering has no gaps.

By |2026-11-14T23:57:17+01:002025-08-26|Knowledge base|Comments Off on How a roof valley drains the junction between two slopes
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Second-grade 100 mm wall panels for a new hall

A 100 mm wall panel from a cheaper batch may be used in a new hall if its condition and parameters match the project. The term second grade alone does not explain the reason for the price reduction. The assessment should be based on the specific pieces, the visibility of the walls and the cutting plan. This makes it possible to separate an acceptable cosmetic mark from a defect that matters for the performance of the building envelope. The 100 mm dimension specifies the nominal thickness according to the product designation. On its own it says nothing about the U-value, load-bearing capacity or fire resistance. Data for the specific panel are needed: core, facings, fixing and conditions of use. Panels from different systems do not become interchangeable merely because they have a similar thickness.

By |2026-11-14T16:49:17+01:002025-08-20|Knowledge base|Comments Off on Second-grade 100 mm wall panels for a new hall
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Omega sections in cladding refurbishment: what can a lightweight subframe achieve?

Refurbishing the building envelope often requires a new mounting plane. The old substrate does not always match the dimensions and layout of the new elements. Omega profiles can help create an orderly subframe. Their hat-shaped cross-section separates the fixing plane from the cladding support. This is a practical feature, but it must be used in the right detail. Cold-formed profiles should complement the identified structure, not conceal its unknown condition. A grid of omegas can define repeatable support lines for the new layer. This makes it easier to position fasteners and coordinate cladding joints. A well-chosen height provides the necessary offset. The solution can be useful for organising the details of a refurbished building envelope. It is worth showing it on a drawing with dimensions from the outset.

By |2026-11-15T18:56:27+01:002025-08-11|Knowledge base|Comments Off on Omega sections in cladding refurbishment: what can a lightweight subframe achieve?
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Planning the supports for a mineral wool sandwich panel wall

An insulated panel with a mineral wool core is a building envelope element that requires designed supports. Their arrangement is determined by loads, installation direction, openings and the properties of the specific panel. In a new hall, it is worth resolving these issues before ordering the frame. Adding rails later may conflict with windows, services and the façade line. Columns and rails transfer actions to further building elements. The insulated panel acts between supports within the range specified for the product; it should not automatically be treated as bracing for the entire hall. If the structural engineer wishes to utilise a specific interaction between the envelope and the frame, this must be justified in the design.

By |2026-11-14T10:37:37+01:002025-08-09|Knowledge base|Comments Off on Planning the supports for a mineral wool sandwich panel wall
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Metal fence pickets for a house: choosing the infill and layout

Metal pickets will work when you want a durable fence with a repeatable colour and no frequent painting, but the choice should follow the function of the property. Before buying, set priorities for each side of the plot: privacy, screening from the street or marking the boundary. Check whether openwork bays give enough visual exposure and whether a dense layout increases the area exposed to wind. View a sample from the side to assess the section and coating, and count the complete set with posts, rails and gate.

By |2026-11-14T23:58:02+01:002025-08-04|Knowledge base|Comments Off on Metal fence pickets for a house: choosing the infill and layout
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Is a sheet metal fence right for your property?

A sheet-metal fence will work on a property only once the solution is matched to the specific location and the desired effect. Before buying, it is worth checking whether a full trapezoidal sheet or profiled pickets better meet the needs, because this term covers various solutions. The gaps should be assessed from different angles, along with the finish on both sides of the fence. The gate structure and automation are worth settling before choosing decorative details, leaving design decisions to the designer.

By |2026-11-14T20:15:05+01:002025-08-01|Knowledge base|Comments Off on Is a sheet metal fence right for your property?
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Choosing the thickness of roof panels and detailing the junctions

Roof panel thickness affects insulation performance, the dimensions of details and how the panel behaves between supports. It should not be determined separately from the structure. In new construction, the best moment to choose is before the wall heights are closed and service penetrations are planned. Then complete, feasible roof variants can be compared. Start with the temperature maintained in the building, the heating method and the nature of use. A cold canopy, a warehouse and a workshop with a controlled microclimate have different needs. Humid processes additionally require assessment of surface temperatures and joint tightness. The roof area alone does not determine the correct thickness.

By |2026-11-14T16:49:15+01:002025-07-24|Knowledge base|Comments Off on Choosing the thickness of roof panels and detailing the junctions
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Why parts availability matters when choosing a photovoltaic roof

A roof is chosen with long-term use in mind, and some devices and components may need to be replaced over time. That is why, before buying, you should ask about how parts are identified, the service procedure and possible replacements. In an integrated system, compatibility concerns both the electrics and the roof covering. Merely ensuring that a product is popular does not explain how a specific section of the roof will be repaired in a few years' time. The active element must fit the geometry and joints of the adjacent covering. At the same time, it should work with the existing electrical system. Similar dimensions and colour are not enough. A change in voltage, profile or method of fixing may require different measures than a simple replacement of one unit.

By |2026-11-15T19:00:26+01:002025-07-17|Knowledge base|Comments Off on Why parts availability matters when choosing a photovoltaic roof
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What determines the weight of T18 and T35 trapezoidal sheets?

The weight of T18 and T35 trapezoidal sheets depends primarily on the steel thickness and on which surface area the stated mass refers to. There is no single fixed value for these profiles, because the same shape can be available in different material variants. When planning transport and performing structural calculations, check whether the data relate to the total area, the coverage area or a single sheet. It is also worth establishing whether protective coatings are included. Only the technical data sheet for the specific product provides a reliable mass.

By |2026-11-14T20:14:06+01:002025-07-17|Knowledge base|Comments Off on What determines the weight of T18 and T35 trapezoidal sheets?
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