Light roofing material Lindab Topline

Metal roofing was until recently primarily a regional affair. In recent years, however, it has gained in popularity and is gradually moving from mountainous areas into cities and lowlands.

LindabTopline is a lightweight roofing system made from high-quality steel sheet with a colored surface finish. LindabTopline meets all aesthetic, technical, and functional requirements for roofing.
The roofing is profiled into the shape of classic tiles, giving the roof a perfect appearance. The modern material makes it suitable for use on new builds. At the same time, the LindabTopline roofing, due to its very low weight (5kg/m²), is suitable for the renovation of older buildings. It finds its application in urban buildings as well as in rural structures.
The steel sheet from which the LindabTopline roofing is made is coated with a colored surface finish that ensures a highly aesthetic appearance while simultaneously protecting the steel core against corrosion. The protective layers of Polyester or HB Polyester provide the roofing LindabTopline with durability and strength, allowing it to withstand demanding conditions faced in not just cold Scandinavia, but also in our climatic zones.
A characteristic feature of the LindabTopline roofing is its easy and quick installation, long service life, and minimal maintenance. Metal sheets are easy to handle, installation is straightforward and relatively quick. The roofing is manufactured to fit each roof without unnecessary waste and excess.
If necessary, it can be adjusted on-site by cutting, which is particularly advantageous for atypical roof structures. The roofing is maintenance-free and has a lifespan of at least 50 years. The profiled roofing Lindab Topline, resembling classic tiles, is used on roofs with a slope of 14˚ or more. Thanks to its low weight – 5 kg/m² – significant savings can be made on the reconstruction of frameworks for older roofs, and cost savings on foundations and framework sizing will be reflected in the case of new builds.


You will learn the detailed step-by-step installation procedure for Lindab Topline tiles from the following photo series. The final point relates to the detail of the roof ridge ventilation:

Handling the tile sheets

When handling the roofing, care must be taken to avoid deforming or twisting the sheets. Try to handle the tile sheets in a vertical position. If handling the roofing in a horizontal position, it should be done very carefully, as excessive longitudinal sagging may cause longitudinal deformation in the individual profiles. This risk is particularly present if working with sheets longer than 4 m. For easier handling, it is recommended to use shorter sheets, especially if there is not much space on site.

Laying the tile sheets

An original laying plan is prepared for each contract, which is included in the delivery or can be requested from Lindab's technical department. The laying plan significantly speeds up and simplifies the entire installation. It is important to lay the sheets perpendicular to the eaves edge and in lengths according to the laying plan. When laying, installation can proceed from either the left or the right side. When laying the roofing from the right side, the sheet is tucked under the already anchored roofing, preventing it from shifting downwards, which facilitates installation at greater inclines (fig. 2).
If the length of the eaves edge exceeds 10 m, it is recommended to offset the LPA sheets about 5–10 cm upwards from the eaves edge and use longer eaves flashing (fig. 3). For roofs longer than 10 m, an error when angling the first sheet, which may be in the order of millimeters, can manifest as a misalignment of several centimeters.

Fig. 2

Fig. 3

Anchoring the roofing

Fig. 4

For anchoring the roofing, screws with a sealing washer made of EPDM material should be used. Depending on the type of batten material, these screws are further divided into SWT screws (wooden battens) and SD3T screws (steel battens max. 3 mm). Screws are available in all colors according to Lindab's color range. When tightening the screws, the correct torque must be chosen so that the sealing washer is neither too deformed nor insufficiently tightened.

Fig. 5

At the eaves edge, at the gable, and where two sheets meet, the roofing is anchored in every wave, while in the field it is anchored every other wave. At the overlap point, the sheets are joined using SL2T screws, or alternatively using waterproof rivets. On average, we recommend 7 screws/m² and 3.5 rivets/m². Do not underestimate the anchoring of the roofing at the eaves and gable edges where the roofing is most affected by the suction force of the wind!

Cutting the roofing and necessary tools for installation

The tile sheets need to be cut down in certain areas of the roof, and for valleys and corners, a cross cut should be made. Professional cutting shears are used for these purposes. Never use an angle grinder or any other tools that use a cutting disc as they can excessively heat the surface around the cut and damage the polyester layer. All cuts must be painted with repair paint, and metallic shavings that may corrode in the future should be removed from the roofing surface. Furthermore, you can manage with standard sheet metal working tools.
Before you start cutting the roofing, it is advisable to mark the cutting direction with a felt-tip pen and a wooden batten (fig. 6). If conditions allow, we recommend cutting the roofing always from top to bottom (fig. 9), as it makes it easier to handle the cutting shears at the point where the sheet is bent. For a smooth cut, it is important to apply some oil to the cutting tip and always lead the cut perpendicularly to the sheet (fig. 7), meaning that at the bend point, we must appropriately rotate the cutting shears (fig. 8).

Ridge and valley ventilation

Fig. 10

Properly ventilated ridges are an essential component of ventilated roofs. Moisture is expelled from the inter-roof spaces precisely through the ventilated ridge. This phenomenon occurs under ideal conditions due to the differing pressure between the eaves edge and the ridge, creating natural ventilation (chimney effect).
In cases where the roof slope is less than 30˚, or the length from the ridge to the eaves exceeds 8 m, it is advisable to ventilate the roof using a LV200/160 ventilation tile. Ridge ventilation can be performed in several ways, but ventilation openings must always be protected against the intrusion of birds, small rodents, or dirt. Here we offer you three possible implementations of ventilated ridges. When using a round ridge cap NTP, a VPH ridge ventilation strip (it is necessary to use a ridge batten) can be used, or, as in this case, a VPH Roll ventilation strip.

Fig. 11

The VPH Roll ridge ventilation strip can be installed without the use of a ridge batten, making installation faster and easier. When using a flat ridge cap NP, the VPH Roll ventilation strip must be used.
For hipped roof types where two valleys and a ridge meet in one place, a dividing ridge cap is provided to facilitate the connection (fig. 10). The dividing ridge cap is available in two versions for differing roof slopes (15-30˚ and 30-45˚) to adapt as closely as possible to the shape of the roof. NTP ridge caps and dividing ridge caps are anchored to the upper wave of the roofing with SL2T screws.

If you have questions about the Topline roofing or any other Lindab product, or you haven't found what you are interested in, please write to us at infoprofil@lindab.com or www.lindab.cz.

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Lindab s.r.o. is a subsidiary of the Lindab AB Group from Sweden, which sells its products in 50 countries around the world. Since 1993, LINDAB has been present in the Czech Republic in the Profile division, which specializes in the manufacture and sale of thin-walled steel sheets, lightweight roofing systems, gutter systems in which it is a leader in the Czech market, and the production of systems for flat roof coverings. Currently, Lindab employs more than 300 people in the Czech Republic.

Lindab s.r.o.
Na hůrce 1081/6
161 00 Prague 6 Ruzyně

Tel: 233 107 200
Fax: 233 107 250

www.lindab.cz
info@lindab.cz