Independent studies have shown that even a 15% reduction in leakage can reduce fan power requirements by 40% or more – and save you thousands of pounds. Points of leakage up to 20mm across may be sealed, meaning system leakage can quickly and easily be reduced. Removable blocks are placed into the ductwork system and access panels may also need to be installed to facilitate this. Other building services such as walls, ceilings and other characteristics can restrict access to the ductwork system making manual sealing difficult. It can be very difficult to pinpoint areas of leakage, usually there are many points of small leakage which contribute to a large leakage total.

Duct sealing systems - Filoform

We can arrange anchor testing for load capacity and quality of fastening for anchors in concrete and masonry, by trained engineers in accordance with the recommendations of BS8539. Large sections of ductwork may be sealed at one time, 100m – 150m of ductwork is possible dependent on design. The high quality, one component, flexible sealant “MD+” is based on a silicon compound that cures with air (Humidity).The picture opposite shows unsealed electrical ducting and void openings located at a waste water treatment (WTW) plant – the open cable ducts undermine the purpose of the nearby fire door and should be sealed using fire rated cable duct seals. The Filoform duct sealing system FiloSeal+HD uses our MD+ sealant which is easily applied from a standard skeleton gun. Energy saving calculations may be carried out after Aeroseal works, but it has been possible to reduce fan speeds or even reduce fan size after Aeroseal, while still achieving required air volumes. air master” 32-17 is a high quality, water based acrylic emulsion adhesive sealant specially developed for HVAC ductwork sealing. Leakage points up to 20mm across may be sealed in one application, meaning system leakage can rapidly and easily be reduced.

LD410 Duct Sealant | illbruck UK

As a result, achieving leakage rates outlined in BESA DW144 and an air tightness class C or D for an already installed air duct system was usually not possible. Tested under severe condition, suitable for wide ranging industries and for use in the harshest environments. Air duct manufacturers can prove that they meet the tightness requirements of DIN EN 1507 or DIN EN 12237 through their operational quality assurance and through the use of high-quality manufacturing products in production, no longer have to deal with defects caused by the installation process. Ductwork leakage rates are outlined in BESA DW144 and systems should be manufactured and installed to comply with this specification. Air master 32-17 provides excellent strength, Flexibility and resistance to heat and cold, forming a seal against air leakage.

Air leakage occurs on all ductwork systems but becomes a problem when it exceeds the allowable leakage limit for the ductwork classification.