|
Installed onto Wooden Strapping Rather Than Directly to the Roof DeckLondon Eco Roof panels are mechanically fastened on to a horizontal spruce strapping system (rather than directly to your roof deck itself), meaning the fasteners do not create hundreds of perforations in the vapour barrier itself. The vapour barrier installed beneath your new metal roofing is designed to prevent moisture condensation from infiltrating your roof deck and prevent rotting.
(Note: condensation naturally forms beneath all metal roofs whenever humidity and temperature changes.) Weight Bearing Load of New Roof Supported by Rafters- not the Existing Sheathing DeckSmaller metal shingles are applied directly to the roof deck using concealed fasteners. Not only does this create thousands of perforations in the newly applied vapor barrier system, its also means that the weight bearing load of snow in winter is supported by the sheathing deck.
If your roof has had one or more previous shingle replacements, the sheathing deck (due to ageing) may be starting to sag between rafters. This negatively effects both the aesthetics and life expectancy of your roof in the long term. A London Eco Roof is strapped to your roofs existing rafters, meaning it can also be easily shimmed to ensure it is 100% level. There is nothing worse than a sagging new metal roof, a commonly seen flaw with metal shingles |
Benefits of Exposed Mechanical FastenersOur ‘permaseal’ exposed fastener system uses a corrosion resistant 1.5” fastener designed to match the longevity of your roof panels. Each fastener includes a completely encapsulated neoprene washer sealed within a cupped metal washer that is torqued to 30 lbs. PSI to protect the neoprene against UV exposure and degradation. Our corrosion resistant screws are coated with the same paint as your metal roof to ensure no color variation between your roof and screws.
Exposed fasteners allow the roof panels to be individually removed or replaced should access to the roof ever be required – or in the event that individual panels are damaged by falling debris like trees. Less Torque Exerted by Metal Expansion and Contraction with Our Metal RoofsMetal roofing expands and contracts with temperature change. Traditional ribbed metal roofing can expand by 1/2 - 3/4 inch on an 18 foot run. Over time the forces of expansion and contraction can work fasteners loose.
To prevent this, London Eco Roof Architectural Panels (Bingo ,Bravo & EcoTile) are engineered with a unique tension release feature built in to the relief edges of every architectural panel. This feature eliminates traditional stress loads exerted on exposed mechanical fasteners when your metal panels expand and contract. |
|
|
Self Ventilating Cool Metal Roofing
|
|
|
