FLAT ROOFING
Flat roofing is usually designed for use on small buildings such as, garage roofs, bay windows, outbuildings and extensions.
The type of flat roof mainly depends on the type of building, costs and purpose of the building.
There are three main types of flat roofing:
- Felt
- Rubber
- Fibreglass
FELT ROOFING
The old felt flat roof is showing signs of needing replacing - as well as the dirt, debris and moss growth it is also leaking
Laid the underlay
We removed the old mineral felt flat roofing material
Laying down the mineral felt flat roof material
Removal of the old felt roofing and laying down new roofing boards
The Finished Product - New Felt Roof
RUBBER FLAT ROOFING
EPDM (ethylene-propylene-diene monomer) is a man made rubber that’s been around a long time. A good example is the rubber that’s used around car doors or windscreens, out in all weather and exposed to the sun for years.
EPDM is a rubber material consisting of the main compounds ethylene and propylene. A flexible rubber matrix is formed when a small amount of diene is added to the mix.
EPDM is available as a reinforced mix, both of which are commonly used and available in either a cured or uncured state.
Insulating a flat roof
Insulating a flat roof using the warm roof construction method means you place the roof insulation over the timber decking.
Warm roof construction is considered to be much more efficient and is a better build. Cutting pieces of roof insulation between the joist is a skillful job and takes time, unfortunately if the roof insulation is not cut correctly and air can get between then cold bridging can begin
WHY DOES MY FLAT ROOF LEAK?
The top reasons why a flat roof leaks are:
Not having an adequate fall on the roof or adequate outlets for water to drain from the roof.
The roof covering not being installed to the manufacturer’s specifications.
The roof holds water because the timbers supporting it have sagged and now allow water to pond on the roof.
Solar-reflective stones or paint haven’t been applied regularly.
People walking and working on the roof without taking care.
Flashings not dressed to the surrounding walls correctly or incorrect use of flashing materials.
TORCH ON FELT FLAT ROOFING
Torch on felt has predominantly taken over the market because of the ease of installation.
The new, high tensile, torch on felts that have taken over from the traditional mineral felt roofing systems are now so good that some manufacturers are guaranteeing their products for 20 years.
WHAT IS MINERAL FELT ROOFING ALSO I
Torch on flat roofing
Torch on felt
Hot bitumen flat roof
Pour and Roll application
Hot mop
Three layer felt
Built up three layer felt roof
CAN MY FLAT ROOF BE INSULATED?
Most old flat roofs can be insulated, however, sometimes the cost becomes restrictive, take an example of a flat roof that has a bedroom under it and above a balcony opens up onto the flat roof, the step of the door out onto the roof is only 50mm above the existing roof.
