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Case Studies

Case Studies

We hope you find useful information in the projects covered here

Swimming pool roof

Project Objective

Refurbish swimming pool roof with Sarnafil adhered single ply membrane. 

Prepare materials specification to be approved by Sarnafil. including self adhered Sarnavap 5000SA , 150mm Sarnatherm G, 50mm Sarnatherm G to parapet up stands, Sarnatherm G410 15ELF & G410 15EL to parapets. 

Obtain u value & condensation calculation to ensure correct insulation depth is used & that no interstitial condensation will be created. 

Installation Process

  • Remove & dispose of existing roof cover & roof deck 
  • Fix new 18mm ply roof deck using stainless steel fixings 
  • Board out internal face & parapet tops 
  • Prime roof deck with Sarna 600 primer 
  • Bond 150mm Sarnatherm G to roof deck 
  • Fix 50mm Sarnatherm G with stainless steel fixings to internal face of parapets 
  • Fix preformed scuppers 
  • Bond Sarnafil G410- 15ELF single ply membrane to Insulation 
  • Weld laps 
  • Restrain membrane perimeters with Sarnafil peel stop 
  • Bond Sarnafil G410-15EL to internal face of parapets 
  • Fix Sarnafil drip detail to external edge of parapets 
  • Create flashing to parapet tops with Sarnafil G410-15EL

On completion project inspected by a Sarnafil field Technician.

Submmit materials Guarantee application to Sarnafil. 

Project in pictures


  • adhesive_applyed_to_insulation_ready_to_receive_membrane.jpg
  • bonded_insulation_laid_in_staggered_pattern.jpg
  • finished_surface.jpg
  • membrane_glued_to_insulation.jpg
  • original_roof_cover.jpg
  • orignal_roof_cover.jpg
  • parapet_upstands_insulated.jpg
  • preformed_scupper_set_into_insulated_upstands.jpg
  • roof_deck_primer_sa_vapour_barrier_bonded_nsulation.jpg
  • roof_deck_striped.jpg
  • striping_roof_deck_off.jpg

Refurbishing the roof to a block of flats

Project Objective

Refurbish flat roof using PIR insulation & mechanically fixed Sarnafil S327-15EL. 

The size of the roof & height (9Metres) makes it expensive & impractical to strip of existing roof cover & replace the roof deck unless absolutely necessary. Therefore core test is undertaken to establish the roof build up. Pull out tests are also carried out in different areas of the roof to establish that the roof deck is sound enough to fix into. 

Prepare materials specification to be approved by Sarnafil including 150mm Sarnatherm S, G410 15EL to S32715EL to parapets. 

Installation Process

  • Remove debris from existing roof cover 
  • Board out internal face & parapet tops 
  • Fix 150mm Sarnatherm S to roof deck 
  • Fix preformed scuppers 
  • Fix Sarnafil pre formed metal perimeter trims 
  • Fix Sarnafil S327-15EL single ply membrane 
  • Restrain & Weld laps 
  • Restrain membrane perimeters with Sarnabar 
  • Bond Sarnafil G410-15EL to internal face of parapets 
  • Fix Sarnafil drip detail to external edge of parapets 
  • Create flashing to parapet tops with Sarnafil G410-15EL 

On completion project inspected by a Sarnafil field Technician 

Submit materials Guarantee application to Sarnafil. 

Project in pictures


  • Roof BeforeRenovation
  • Roof Before Ronovation
  • Roof Before Ronovation
  • Completed Roof
  • Completed Roof With Sarnatreads
  • Completed Roof With Gully
  • Completed Roof With Lift Shaft Flashings

Replacing shallow pitched tiled roof

Project Objective

Replace leaking shallow pitched tiled roof, with Ruvitex glued membrane, weld decal profile to replicate a seamed roof. 

Because of the shallow pitch, the existing tiled roof had frequent water ingress, Roof Technology were tasked with installing Ruvitex single ply membrane. 

Installation Process

  • Remove & dispose all roof tilesFix 18mm OSB sterling board roof deck 
  • Fix Ruvitex pre formed metal perimeter trims 
  • Bond Ruvitex V 1.5 single ply membrane 
  • Restrain & Weld laps 
  • Restrain membrane perimeters 
  • Create roof light flashings 
  • Create perimeter flashings 
  • Weld Ruvitex Standing seam profile (to replicate seamed roof) 

Project in pictures


  • Original Roof
  • Original Roof
  • Original Roof
  • Completed Roof
  • Completed Roof
  • Completed Roof
  • Completed Roof

Balcony Refurbishment

Project Objective

Refurbish balcony using PIR insulation, 18mm OSB sterling Board mechanically fixed Sarnafil S327-15EL, G455-13 protection sheet, Chrome & glass balustrade. 

Installation Process

  • Remove & dispose all roof tiles
  • Remove & dispose of existing roof cover & decking 
  • Lay PIR insulation within roof void (Sarnatherm S) 
  • Fix timber noggins between rafters to support balustrade supports 
  • Fix 18mm OSB sterling board roof deck 
  • Lay separation fleece 
  • Fix Sarnafil pre formed metal perimeter trims 
  • Fix Sarnafil S327-15EL single ply membrane 
  • Restrain & Weld laps • Restrain membrane up stand with Sarnabar 
  • Fix chrome balustrade supports 
  • Create Sarnafil flashings to balustrade supports 
  • Fix glass balustrade 
  • Lay G445-13 protection sheet 

Submit materials Guarantee application to Sarnafil. 

Project in pictures


  • Original Finished Surface
  • Original Balustade
  • Original Balustade
  • PIR Insulation Layed into Roof Void
  • New Timber Noggins Fixed to Support Balustrad
  • Balcony re-Decked
  • Sarnafl Membrane Lain and Balustrad Supports Fixed
  • Membrane and Balustrad Completed
  • New Balustrad
  • Complete Balcony
What Our Customers Say...
  • Great service from the start, very efficient and professional. The finished product was far better than we had imagined

    Mr & Mrs Peters

  • The installers were extremely polite, very tidy and efficient. Pleasure to do business with them

    Mr P Rostron

  • Good work and courtesy. Quality to be tested during next stormy and rainy season, as well as next autumn & winter

    Mr Erbolat

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