SAB Deep decks
SAB Shallow decks
Processing, Fleece & Film
Here, you’ll find an overview of all additional processing, such as perforating and drainage holes, that can be performed on the profile roof plates. There is also information on the use and application of anti-condensation fleece and protective film.
When additional acoustic requirements are set for a building, the profiled roof and facade sheets, and liner trays can be provided with a perforation pattern. Perforation can also be ordered for aesthetic reasons. If opting for perforation, bear in mind that the allowable load and deflection will change. SAB standardly delivers two perforation patterns: Perfo 3 and Perfo 4 (perforation rates of 23.4% and 11.7%, respectively).
With perforated material, it’s even more crucial that our products are transported and stored dry. If rain or condensation water remains in the perforations, corrosion will occur. Especially with thicker material, the zinc layer is not sufficient for adequate cathodic protection. The corrosion is often superficial, easy to clean, and the process will stop after assembly. However, this often raises questions from clients.
For large roof projects like distribution centers with a flat roof, which remain open for a long time before insulation and the top layer of bitumen or EPDM are applied, rainwater can accumulate in the corrugations of the warm roof plates. To prevent this, SAB offers warm roof profile sheets with drainage holes. Drilling holes on-site in the roof plates to allow excess rainwater to drain is then unnecessary. This prevents construction/water damage on the project if the roof is not yet wind and water-tight. For the most common SAB warm roof sheets (SAB 106R+/750, SAB 110R/1000, SAB 135R/930, SAB 153R/840, and SAB 158R/750), SAB can apply the drainage holes, also in combination with perfo. The holes are spaced every 1000 mm and staggered by 300 mm per valley.
Cold roof sheets (as well as facade and warm roof sheets) can be fitted with anti-condensation fleece on the inside to prevent condensation from dripping. Anti-condensation fleece is primarily intended for indoor use. It is not suitable in humid spaces or in spaces with a permanently high moisture content, where there is no ventilation and/or the absorption surface cannot dry. Anti-condensation fleece is suitable for canopies with limited moisture exposure.
The grey anti-condensation fleece consists of interlocking fibers that leave enough space to absorb condensation. When the temperature rises and ventilation occurs, the absorbed moisture is released as vapor into the environment. Besides its excellent moisture-absorbing properties (500 to 900 gr/m²), the fleece also provides additional sound absorption.
At the butt overlaps and ends above the gutter (over a width of 200 mm), it’s important that profile plates with anti-condensation fleece are processed on-site with a hot air gun. The heating deforms the fleece, thereby preventing the suction of water from the outside.
To prevent damage, SAB-profile can apply protective film to all coatings. SAB-profile advises ordering all smooth coatings, such as polyester, always with film. The film can be removed immediately before or after assembly.