• Euromac 2 - The Roof
  
  

  There are no other roof systems like Euromac 2 on the market, it was especially designed for warm roof applications and is unrivalled in its speed of installation, air tightness and low U-values.

  
  How does it work?
  The Euromac 2 “elements” are essentially insulated rafters which interlock by means of a tongue and groove to form a water tight seal. The tongue and grooves have two built in condensation channels which divert any moisture out of the roof.
  
  The roof elements consist of two Z-shape steel re-enforcements running through the dense EPS. The reinforcements give the elements greater strength and provide anchor points for mechanically fixing to the roof superstructure. The reinforcements also provide fixing points for internal and external battening. The roof elements can be produced in any length and are manufactured to order minimising waste and excess materials on site. They are easily cut with a reciprocating saw if hips or valleys are a feature of the roof.

  The superstructure to support the Euromac 2 elements is very basic but varies depending on the roof design. The principle behind there installation is the same regardless of the roof design.

  The Euromac 2 elements completely replace the roofs primary rafters as they are essentially insulated rafters in themselves. The Euromac 2 elements must bare upon and be fixed to purlins running horizontally across the roof. Typically one purlin is required with the Euromac 2 elements being fixed also at the wall plate and ridge beam. A single ridge beam may be used or two purlins depending on the design requirements. The purlins can be timber or steel depending on engineer’s specifications, if steel is used a timber wall plate must be fixed to the top edge allowing the Euromac 2 elements to be securely anchored down.
  The purlins are typically supported at the gable ends although on greater spans a truss or intermediate load bearing walls may be required. For roofs with hips or valleys the purlins are supported by means of steel or block work columns and hip/valley rafters are fitted to pick up the cut ends of the Euromac 2 elements.

  We supply al the fixings required to install the roof elements and a fixing kit to aid installation.

  The Euromac 2 elements boast considerable advantages over conventional warm roofs:
  
  Suitable for domestic and commercial buildings, new or old
  U Values from 0.22 to 0.16 W/sq.mK
  Is lightweight, weighing only 5.5 kg per linear metre
  Total suppression of cold bridges
  Roof space can be warmed up quickly, resulting in even lower heating costs
  Opens up roof allowing maximum use of roof space
  Sound Insulation
  Improved air tightness
  Flexibility in design
  Proven technology long lasting and low maintenance
  Weather tight prior to felt or roof covering being installed
  Can be erected in all weathers
  EPS is water repellent and rot-proof

  
  
  Energy efficiency & Air tightness
  Euromac 2 roof elements are available from 170mm to 230mm thickness
  which is equivalent to 450mm of glass fibre insulation. Other insulating products
  such as Celotex can achieve the same U values with thinner insulation but cannot
  guarantee the level of air tightness as Euromac 2.
  
  

  Openings and features Roof windows: Flush fitting roof windows such as Veluxs’s are easily incorporated into the roof. Timber trimmers are installed during the roof construction and the Euromac 2 elements are cut around. The joints between the timber trimmers and the Euromac 2 elements are sealed with foam and taped to minimise air leakage.

  
  Dormer windows:
  The same construction method to that for flush roof windows is used and a timber frame is mounted on the exterior of the roof then insulated and clad in the conventional manner.

  Chimneys:
  Exactly the same construction method as for flush roof windows is used. The trimmers are fitted and the chimney passes through the roof structure, the gap between the timber trimmers and block work chimney are foamed to seal any leaks.
  
  External finishes

  Roof covering:
  Euromac 2 can support any roof covering desired from concrete tiles to natural slate.

  Underlay:
  In Europe typically felts or underlay are not required over Euromac 2 roofs however we have found that most building control departments require them anyway. For the small cost it is often worth doing.

  Fascias & soffits:
  Timber, UPVC or composite are all suitable for use with Euromac 2, a lightweight timber frames is installed to take the fascias and soffits boards.
  
  Internal finishing

   

  Plaster boarding:
  Typically battens are mechanically fixed to the underside of the Euromac 2 elements using self tapping screws. The battens run horizontally at 400 or 600 centres to take a layer of plasterboard. The joints can be taped and filled or the boards skimmed. It is also practical to mechanically fix plasterboard directly to the Euromac 2 with self tapping screws.

This document gives more technical information on the Euromac 2 Roof system