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Listwa podkalenicowa

Under-ridge strip

Ventilation flashing, installed under the ridge. Recommended for standing seam panels and modular roof tiles. Available in polyester coatings and two standard lengths – 0.5 rm and 2.0 rm.

Product description

Under-ridge strip

VENTILATION FLASHINGS

VENTILATION FLASHINGS play an extremely important role in ensuring the long-term and trouble-free use of the roof. They are responsible for the correct ventilation of the roof slope, i.e., the free flow of air under the covering, thanks to which the covering naturally gets rid of moisture that accumulates on the inner side of the covering and, as a result of the condensation phenomenon, turns into water and moisture. In the long term, this moisture causes irreversible damage both to the roof framing and can also cause damage to the covering itself.

Under-ridge strip

The under-ridge strip is a special flashing dedicated to the installation of PD-510 standing seam panels and modular roof tiles. For these coverings, the installation of the ridge cap (also known as “gąsior”) is performed on a so-called intermediate flashing – specifically the under-ridge strip. This strip is also colloquially called the under-cap strip, following the customary name of this element.

We offer the under-ridge strip in two lengths:

  • 2000 mm – recommended for the installation of diagonal ridges with PD-510 standing seam panels, as well as for the installation of KARO panels and modular roof tiles.
  • 500 mm – perfectly suited for standing seam panels.
Choose a coating:
Protective coatings
PMG35®Polyester mat

Technical specification of the coating

coating thickness
35 µm
corrosion resistance
High ★★★☆
UV resistance
Good ★★☆☆
Possibility of processing
Good ★★☆☆
Aesthetic warranty
15 years
technical warranty
35 years

Available colours

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
PS25Polyester glossy

Technical specification of the coating

Available colours

RAL 9006<br><span style="font-size: 7pt;">SILVER</span>
RAL 9006
SILVER
RAL 9007<br><span style="font-size: 7pt;">SILVER METALLIC</span>
RAL 9007
SILVER METALLIC
RAL 9010
RAL 9010
Pruszyński Company guarantess realization of each order in one colour shade. Although due to technological process of covering paint to steel shets there is possibility for occuring difference in colour shade in different deliveries.

Regarding this please inform sales person if different delivery is continuation of previous orders.

Inspirations

Technical specification

General information

Length:
2 m
Thickness:
0,50
Coating
polyester gloss / polyester mat / polyurethane
Listwa podkalenicowa - przekroj

Download

Production profile 2025
[PDF]
Wersja pliku: 25.3

Do you have questions?

Is it possible to make copper machining at the steel roof?
When using copper, be careful because copper oxides are very aggressive and cause corrosion of other metals. Therefore, on buildings, it cannot be combined with other metal species (copper enters into contact and causes electrolytic corrosion of other metals).
Why is the metal roofing sheets recommended for the renovation of old roofs?
This is directly related to its low weight. In the case of old roofs, the trusses of the renovated houses are often somewhat damaged by time. Therefore, it is safer to use a metal roofing tile, which weight oscillates at 4.7 kg/m2, than almost ten times a heavier ceramic tile than it. However, it is always worth verifying the condition of the roof truss, with a specialist and make sure that it does not require renovation or replacement. In such cases, the safety of residents or building employees, as well as the assembly team, is always a priority. In most situations, however, the condition of the structure without major problems allows the use of roof tiles, while the use of ceramic tile would not be possible.
Can you use an angle grinder when cutting sheets?
Modern roofing exclude the use of angle grinders for cutting. The use of this method of cutting the material is associated with the loss of warranty.The angle grinder during operation and cutting produces very large amounts of heat, which in turn damages the edges of the sheet, as well as the coating covering it. In addition, the filings extracting during operation blend into the surface of the blades, additionally creating potential corrosion outbreaks.The right way of cutting sheet metal is to use automatic jumps (so -called Nilerler) or hand scissors. They use the mechanical force to cut the sheet, without exposing it to high temperature jumps. In addition, it is worth remembering that after cutting it is good to train cut places with dedicated protective varnish or special paint.
Does the roof require maintenance?
Yes, each roof requires periodic inspections to check if there have been any damage. Most of the products offered by Blachy Pruszyński have various types of specialized coatings available (covered by the warranty), increasing the life and durability of sheet metal. Maintenance consists mainly in removing the deposits and chimney dust, which left for a longer period of time can lead to sheet metal damage. Particular attention should be paid to places around chimneys that are sensitive due to more demanding operating conditions. If during the coverage inspection, local damage to the paint coating will be noticed, paint corrections should be made. In such a situation, the best solution is to use dedicated gloss paints tailored to a given coating. Such paints are in a stringent offer of Pruszyńska sheet and it is strongly recommended to use company products, recommended for a given coating.
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.euThe 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 you complain the product, where is the information?
Complaints should be submitted in a warehouse in which the purchase was made. In the event that the wholesaler has been closed (does not run a business), the filled print of the complaint application should be sent directly to Pruszyński Sp. z o.o. to: pruszynski@pruszynski.eu

Printing of the complaint application is available in files for download / prints or directly here: Complaints
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