Installing the roofing felt does take care but can go very quickly.
How to apply torch on roofing felt.
Apply the bitumen by melting it over fiberglass.
Hi i will try to offer the best advice i can based on your description.
Torch down roofing consists of modified bitumen which is similar to asphalt.
The correct process for a built up torch on felt system should comprise of 3 layers one base layer manually fixed to the roof usually nailed followed by one torch on underlay with the top finished with a torch on mineral cap layer.
As long as it is installed correctly bitumen prevents moisture build up without needing constant maintenance.
Cover all nail heads with roofing mastic for long term roofing.
Pull the trigger of the gun and move the nozzle around the circumference of each nail.
Some roofing felts are actually glued down.
The dangers of applying these layers with the use of a hot flame makes torch on felt roofing a job best left to the professionals.
These thick layers of roofing felt are installed by heating the back of the felt with a butane torch and then carefully applying it to the roof.
Hold the gun at a 45 degree angle with the nozzle pointed downwards.
If this felt is more than a temporary waterproofing measure apply roofing mastic using a caulking gun.
Applying a iko 2mm torch on underlay followed by a iko 4mm mineral felt cap sheet www topgraderoofing ie.
Watch this video if you want to learn how to use a propane torch on a flat roof.