Installation

• Flat roof installationA flat roof only performs as a system: structural deck, vapour control…
• Profiled steel deck installationThe deck is the foundation of a flat roof. Its deflection and fixing d…
• PVC roofing membraneA single-ply PVC membrane is hot-air welded, so the roof is sealed wit…
• PIR roof insulationPIR boards reach the required thermal resistance with a thinner layer…
• Sandwich panel installationRoof, wall, partition and ceiling sandwich panels with flashings and t…

Maintenance and repair

• Flat roof drainageA flat roof is never truly flat. Falls lead water to outlets, and an e…
• Flat roof maintenanceA flat roof lasts only if its condition is checked regularly. Defects…
• Flat roof repairIf a roof leaks, the first job is to find where water actually gets in…

PVC membranes

• Protan PVC roofing membranesPVC membranes by the Norwegian manufacturer Protan for flat and…
• Protan SEPolyester-reinforced PVC membrane for exposed, mechanically fast…
• Protan EXProtan membrane with 180 g/m² polyester felt on the underside. L…
• Protan G / G-FRGlass-felt reinforced PVC membrane for ballasted, inverted, duo…
• Protan TExposed, mechanically fastened Protan membrane for terraces.

Insulation and accessories

• termPIR AL — foil-faced PIR insulation boardsRigid polyisocyanurate (PIR) insulation boards faced on both sid…
• Roof outlets, vents and cable entriesMembrane systems are supplied with accessories for details: roof…
• Materials and systemsEvery material answers four questions: where it goes in the roof, why…

Documents and details

• Technical document libraryEvery file with revision, date, language and status. Current documents…
• Detail explorerClick a detail on the roof model — explanation, system variants, secti…
• Roofing glossaryTerms in English, Lithuanian and Russian — used consistently across th…

Visualisations

• Roof anatomyRotate, zoom, explode the layers and cut the section. Click a layer —…
• Flat Roof Knowledge CentreShort answer first, technical detail below.
• ProjectsEach project with its real substrate, membrane, location and year.