Typical installations use a three layer system.
Flat roofing torch on felt.
Roofing felt is one of the more popular and traditional methods of creating a flat roof.
Follow the 10 steps below in order to felt a flat roof.
Made from bitumen which is widely known to have fantastic waterproofing properties torch on felt is typically layered to ensure properties are completely protected against the elements.
However it wasn t particularly long lasting or durable so torch on felt was created.
Roofing felt is one of the oldest available options and advances made in the past decade or so have begun to move more towards the torch on approach.
Modern torch on felt roof.
Despite it not being the stronger of the two felt roofing is still a reliable choice.
Start at 1 end of the roof and unroll the bitumen to the other end.
Torch on felt roofing simply describes the method in which the material is applied.
Torch on felt is generally used in combination with fibreglass underlay and plywood to create reliable durable and weathertight flat roofs.
Including fibreglass roof kits torch on felt and liquid rubber products everything you need for flat roofing is in one place.
Step by step guide for felting a flat roof.
Roll modified bitumen roofing sheets over the entire roof.
This guide will use the more durable 30 roofing felt although you can use 15 felt.
Felt roofing also known as tar paper is traditionally installed using hot bitumen to create a secure bond between the roof and the felt.
Repeat this with each roll until the roof is covered overlapping each sheet by about 3 8 in 0 95 cm.
This video walks you through the steps in installing and torching felt drips on a roof and making sure it sticks well to avoid water getting underneath.
Perforated underlay a 2mm underlay layer then 4 5mm felt.
Bitumen roofing rolls can be large and heavy so get help carrying them up to the roof if necessary.
It s reliable and robust.
There are many different types of flat roofing systems available each one with their own pros and cons.