A mechanically fastened roof is generally quick and economical to install and because of its lightness in weight, will often enable savings to be made on the supporting structure. Additionally, as the membrane is exposed, any alterations are easily executed, as access is easy. Similarly, any damage is easy to spot and repair. The wide range of fasteners now available means that it is possible to mechanically fix an exposed Sika-Trocal membrane to virtually any type of deck.
 

The exposed, mechanically fastened membrane roof is the most widely specified option.
 

Sika-Trocal Type S membrane is suitable for mechanically fastened roofs in both new build and refurbishment applications, and generally provide the most rapid and economic system to install, utilising a Sika-Trocal Laminated Metal Disc and thermally broken fastener to secure both the membrane and the insulation rather than the separate fastening system used by many other single ply systems.
 

The Sika-Trocal Disc systems will often enable savings to be made on the supporting structure. Damage by 3rd parties is easy to spot and future alterations are easily accommodated.
 

The wide range of fasteners now available means that it is possible to mechanically fix an exposed Sika-Trocal membrane to virtually any type of deck, with the number of fasteners required to secure the membrane and insulation in place determined by calculation of the size and location of the various zones of influence of wind loading upon each individual roof.
 

To generate these calculations Sika-Trocal provides its Licensed Contractors with access to Internet based calculation software, enabling them to work out the optimum number of fasteners required to secure the roof against wind loads on a project by project basis; avoiding ‘rules of thumb’ or guess work.
 

This type of roof is not suitable or intended to be heavily trafficked or subjected to public or leisure usage, nor is it a suitable surface for an ‘over-roof’ fire escape route unless a suitable walkway system is installed.

 

Product Details

Sika-Trocal® Type S (1.5mm)

A homogenous sheet, that is without any polyester fabric carriers, intended to be used solely as an exposed roof waterproofing membrane restrained against wind uplift forces by mechanical fasteners. Containing ultra violet stabilisers and fire retardants, Type S is highly resistant to ageing and industrial pollutants and will require no further surface treatments or coverings or any other maintenance throughout its service life. The absence of any carrier within the membrane means that the natural flexibility and extensibility of the product is left unrestricted so it has the ability to be fully utilised in absorbing all the movements that occur on any roof without failure.

 

Also, the elasticity of the membrane means that when dynamic wind loads are applied to the membrane the full dynamic force of that load is not directly transmitted to the fasteners, reducing the stress they would otherwise receive. The homogenous nature of the membrane also allows the use of ‘plastic memory’, stretching the membrane during manufacture so that when installed a limited amount of self tensioning will take place, removing the creases that are impossible to avoid during installation.

 

 

DOWNLOADS

Sika-Trocal® Type S 1.5mm

Membrane Product Data Sheet

 

Vapour Control Layers

Product Data Sheet: S-Vap 500E

Product Data Sheet: S-Vap 5000E SA

Sika-Trocal® Type SG (1.5mm)

Sika-Trocal SG is a multi-layer, synthetic roof waterproofing sheet based on premium-quality polyvinyl chloride (PVC) with inlay of glass non-woven.

 

An identical sheet to Type S with the addition of a layer of random glass fibres in the middle of its thickness which is designed to virtually eliminate shrinkage. This feature makes Type SG the material of choice on concave roof surfaces where the radius of the curve is 20 metres or less, the fibre glass layer preventing the Type SG sheet from tensioning itself and pulling away from the curved surface between the fasteners and creating facets on the roofscape.

 

DOWNLOADS

Product Data Sheet

 

Vapour Control Layers

Product Data Sheet: S-Vap 500E

Product Data Sheet: S-Vap 5000E SA

BIM Details

Sika-Trocal® S Mechanically Fastened Roof System - S-Vap 5000E SA

12, 15, 20 & 25 year mechanically fastened roof system:

  • Sika-Trocal® S waterproof covering.
  • Polyisocyanurate foam board insulation.
  • S-Vap 5000E SA vapour control layer.

 

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Sika-Trocal® S Mechanically Fastened Roof System - S-Vap 500E

10, 12, 15 & 20 year mechanically fastened roof system:

  • Sika-Trocal® S waterproof covering.
  • Polyisocyanurate foam board insulation.
  • S-Vap 500E vapour control layer.

 

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Sika-Trocal® SGmA Mechanically Fastened Timber Decking Surface Protection

12, 15 & 20 year mechanically fastened timber deck roof system:

  • Timber decking surface protection.
  • S-Felt T 300 or Sika-Trocal® SBV lower protection layer.
  • Sika-Trocal® SGmA waterproof covering.
  • Polyisocyanurate foam board insulation.
  • S-Vap 500E vapour control layer.

 

Visit National BIM Library

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To speak to an expert about Sika-Trocal's Mechanically Fastened Roofing Systems, please fill in the short form below.

 

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