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LISTWA TYPU J_lead

J-bar

Standard sheet metal flashings, sidewall flashings. List J (so named for its J-shaped profile) is used in the assembly of eave soffits and fascias for NIAGARA gutters (both square and round).

J-bar

schemat domu, dachy, obrobki blacharskie

Sidewall flashing

Sidewall flashings, also known as wall-to-roof flashings, are a technical solution used where the roof meets vertical building elements, such as walls, chimneys, or parapets. Their purpose is to seal these joints and prevent water from entering the structure, as well as to facilitate the assembly of other components. Wall-to-roof flashings are usually divided into two types: lower flashings (installed on the roof surface, where it meets the wall) and upper flashings (attached to the wall or chimney, often covered with a pressure strip). The entire assembly is sealed with silicone or special roofing tape, which ensures complete watertightness. They are most often made of galvanized sheet metal coated with protective coatings that can even double their corrosion resistance.

J-bar

The J-bar is an extremely popular and useful installation trim from the group of sidewall flashings. Its name comes from the characteristic shape of its cross-section, which resembles the letter “J.” It has several applications. It is most commonly used in the assembly of soffits made from roofing metal sheets. It allows for easy insertion of the soffit panel. This contributes to an aesthetically pleasing finish of the eaves, and thanks to the materials from which it is made, it is exceptionally durable.

The J-bar is also widely used in NIAGARA gutter systems, where it is used to assemble the bottom fascia, in both the Round and Square systems. Roofers also frequently use it when assembling trapezoidal sheet metal roof coverings.

Color Scheme

The colors shown below may differ from the actual product.

PMG35® / ULTRAMAT®

PMG R011
PMG R011
PMG R028
PMG R028
PMG R032
PMG R032
PMG R033
PMG R033
PMG R750
PMG R750
PMG RAL 7016
PMG RAL 7016
PMG RAL 8017
PMG RAL 8017

TOPMAT®

TOPMAT RR 033
TOPMAT R033
TOPMAT R750
TOPMAT R750
TOPMAT RAL 7016
TOPMAT RAL 7016
TOPMAT RAL 7042
TOPMAT RAL 7042
TOPMAT RAL 8017
TOPMAT RAL 8017

wood-like

Dąb Złoty
Dąb Złoty
Orzech Jasny
Orzech Jasny
Dąb Szlachetny
Dąb Szlachetny

The Pruszyński Company guarantees that each individual order will be produced in the same color (shade). However, due to the complexity of the coating processes, slight variations in shade may occur between individual shipments.

Therefore, our responsibility for color is limited to a single shipment.

Therefore, when reordering sheets from a specific batch, please indicate on the order form or inform your sales representative that this is a continuation of a previous order and provide a color sample.

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Technical specification

Technical Specifications and Cross-Section

Mounting bracket for soffits and eave components. Also used with NIAGARA gutter systems—both the Square model with a fascia and the Round model with a fascia. It allows for easy insertion of the soffit panel. This contributes to an aesthetically pleasing eave finish. Thanks to the materials from which it is made, it is exceptionally durable.

Material
Galvanized sheet metal, 0.5 mm thick, with a polyurethane protective coating
Coating
PURLAK (polyurethane), glossy, 50 μm thick
Length
2 meters
NIAGARA Kwadratowa- Listwa

Table of Finishes: Availability and Applications

Use the J-bar for:

Soffit
Soffit
Assembly of soffit under the eaves
It creates convenient and attractive "shelves" into which you can easily slide the soffit
NIAGARA Round
NIAGARA Round
Assembly of the bottom fascia
Once mounted to the end panel, it forms a shelf into which you can slide the fascia
NIAGARA Square
NIAGARA Square
Assembly of the bottom fascia
Once mounted to the end board, it forms a shelf into which you can slide the fascia

Downloads

Production profile 2026
[PDF]
File version: 26.8

Do you have any questions?

How does an over-gutter flashing with 3 ventilation rows differ from the version with 2 ventilation rows?
The version of the over-gutter flashing with 3 rows of holes is designed for assembly with frontal supporting hooks. The version with 2 rows is designed for assembly with long supporting hooks. The version with 3 rows provides a larger ventilation area, which improves air circulation under the roofing.
What is the difference between over-gutter flashing with a hem and one without a hem?
The over-gutter flashing with hem features a special bend (hem) along the edge, which allows for quick and secure assembly of panels on standing seam roofs and single-module metal roof tiles (by sliding or hooking the edge of the sheet into place).

The over-gutter flashing without a hem has a flat installation edge and is designed for classic metal roof tiles (tailored) and trapezoidal sheets, where the sheets are laid with an overlap and fastened with screws directly to the substrate.
What are the estimated costs of purchasing and installing facade sheets?
The price of elevation panels, depending on the type of protective coating, is available on our website in the "Price Lists" section, on the "Downloads" subpage. Regarding assembly costs, we recommend contacting a contractor. As a manufacturing company, we do not directly carry out projects using our products. However, for any project involving assembly and construction, we recommend using the services of experienced and professional contractors. The total price is certainly significantly influenced by factors such as the complexity of the project, the scope of work, and the number of custom elements and additional components required by the project, all of which can increase the final cost.
What are the methods for installing elevation panels made of sheet metal?
Many contractors are highly skilled at assembling PS panels. The Pruszyński Company conducts annual training sessions where participants can also deepen and refine their assembly techniques. On our website, www.pruszynski.com.pl, you’ll find assembly instructions that will help you install the facade professionally. An increasing number of different types of assembly components are appearing on the market, making it easier to properly install PS elevation panels.
What are the differences between painted sheet metal elevation panels and color-coated ones?
The coating process takes place at the steel mill itself, under very strictly controlled conditions and following a specific procedure that is essentially impossible to replicate even in a professional paint shop. As a result, sheets coated in a given color are exceptionally durable in terms of both UV resistance and weather resistance. An equally important advantage of using mill-coated sheet metal is a significant reduction in the production process, which means that the customer can receive their order much faster. However, this also means there are certain limitations regarding the availability of non-standard colors—which are restricted by current inventory levels. For large orders, it is possible to order sheet metal in any color and coating, but this significantly extends the lead time. In such cases, we very often use powder coating services. When it comes to powder coating, it is very important to provide recommendations in advance regarding the conditions of the structure on which the panels will be installed. In this way, even with powder coating, we can meet requirements for both corrosion resistance and UV resistance.
Can exterior metal panels be used on a single-family home?
Elevation panels can be used in most building structures as facades. The elevation panels are also used as a finishing element for the facade—or even as a section of it—to highlight certain architectural features or as part of an architect’s design. They are ideal both as the main elements of a facade and as a complement to other facade materials. Therefore, there is no reason why they cannot be used on single-family homes, provided their assembly is carried out in accordance with best roofing practices.
What designs and finishes are available for sheet metal elevation panels?
The Blachy Pruszyński Company offers one model of elevation panel— the PS Panel—which is available in two widths: 315 mm and 215 mm. The length of the panel is tailored to the facade’s geometry and manufactured according to the customer’s order. By pre-bending the panel during assembly, we not only achieve a visual effect but also prevent the panels from “waving” due to factors such as heat.
Additionally, depending on the selected coating, our panels offer a very wide range of colors, and for custom orders, we are able to supply panels in any color. An interesting solution is the use of sheet metal with a wood-grain coating to achieve the look of a wooden facade without the need for maintenance, as is the case with natural materials. However, this requires consultation with the technical and sales departments to confirm the conditions, production capabilities, and material availability.
How should the metal roof tile be stored until assembly?
If assembly is to take place within approximately 3–4 weeks of production, simply cut open the packaging and place the package at a slight angle so that any rainwater can drain off.
If this period is to be longer, it is absolutely necessary to cut open the packaging and insert spacer strips between the sheets to allow for free airflow. The package must not rest directly on the ground. The sheets should be stored in a dry and well-ventilated place.
Detailed storage instructions are always provided on the product label attached to the package.
Is it possible to install copper flashings on a steel roof?
Caution must be exercised when using copper, as copper oxides are highly corrosive and cause corrosion of other metals. For this reason, it must not be combined with other types of metals on buildings (copper reacts upon contact and causes electrolytic corrosion of other metals).
Why are metal roof tiles recommended for renovating old roofs?
This is directly related to its light weight. In the case of old roofs, the roof trusses of renovated houses are often already somewhat worn down by time. Therefore, it is safer to use metal roof tiles, which weigh around 4.7 kg/m², rather than ceramic roof tiles, which are nearly ten times heavier. However, it’s always a good idea to have a specialist inspect the condition of the roof truss and confirm whether it requires renovation or replacement after all. In such cases, the safety of the building’s residents or employees, as well as the installation crew, is always the top priority. In most situations, however, the condition of the structure allows for the use of metal roof tiles without major issues, whereas the use of ceramic roof tiles would no longer be possible.
Can I use an angle grinder to cut sheets?
Modern roof coverings preclude the use of angle grinders for cutting. Using this method to cut the material will void the Warranty.
An angle grinder generates a great deal of heat during operation and cutting, which in turn damages the edges of the sheet metal as well as its protective coating. Additionally, the metal shavings produced during operation become embedded in the sheet metal’s surface, creating potential corrosion sites.
The proper way to cut sheet metal is to use automatic nibblers or hand shears. These tools use mechanical force to cut the sheet metal without exposing it to extreme temperature fluctuations. Additionally, it’s worth remembering that after cutting, it’s a good idea to protect the cut edges with a dedicated protective varnish or special paint.
W jaki sposób zabezpieczyć drobne uszkodzenia powłoki blachodachówki, które powstały przy montażu?
Most of the roof coverings in the Blachy Pruszyński Company’s product line offer a selection of specialized coatings using protective finishes. These are technologically advanced and modern materials that are applied to our products under special conditions. They are available in several variants, ensuring not only exceptional durability (covered by a Warranty) but also unique and interesting aesthetic effects for roof coverings. They are subject to very strict requirements and are under constant supervision through laboratory testing.

However, minor damage to the coating may sometimes occur during installation work. If the damage is not significant or is not located in a critical area of the roof, touch-up paints can be used to repair it. They provide a relatively easy way to protect the damaged area from external factors. This solution is often very cost-effective, as it does not require replacing the entire element—which would involve removing the old section and performing assembly with a new one. If you have any doubts about whether this solution is suitable for a specific case, we encourage you to contact our specialists or one of our partners who offer our products.
How to register and how does the warranty work?
In order to register the warranty, download the warranty registration available in files for download / printing or directly:
Warranty registration and send it completed to the following address: guarantee@pruszynski.eu

The warranty begins to apply on the day of purchase of the goods. Registration of warranty is necessary to quickly identify the purchased batch of goods.
How can I advertise a product? Where can I find more information?
Complaints should be filed at the wholesale store where the purchase was made. If the wholesale store in question has closed (is no longer in business), the completed complaint form should be sent directly to Pruszyński Company at the following address: pruszynski@pruszynski.com.pl

A complaint form is available in the "Downloads / Forms" section or directly here: COMPLAINT FORM
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