Removing the old flat roof costs more but creates options for extra space higher ceilings etc.
Flat roof into pitched roof.
Changing the garage to a pitched roof takes work but brings greater protection as well as more room in the garage.
A very important detail is where the flat roof is connecting the pitch roof.
While that s the easiest route it s certainly not your only option.
How much does it cost to convert a flat roof to a pitched roof.
The process for converting a flat roof into a pitched roof depends on your individual structure and your individual needs there is no one size fits all option.
Flat roofs also don t last as long.
It is a significant renovation if you are converting from flat to pitched.
Depending on the climate your flat roof will only last between 15 and 30 years if well maintained.
However flat roofs require much more aggressive and consistent maintenance than a pitched roof.
One of the first things you need to consider before converting your flat roof into a pitched roof is the reasoning behind the transformation.
Pitched roofs can be designed and built using traditional rafter framing or engineered wood trusses.
Some will choose to keep their pre existing flat roof on their structure underneath the new pitched roof to save removal costs but others might not be able to consider that option.
It s not an easy job and requires at least two people but the results are worthwhile and you don t need extensive knowledge of carpentry to do it.
The average cost of converting a flat roof to a pitched roof is around 3 000 to 4 500 although this is dependent on the type of materials used during construction whether or not scaffolding will be used and the size of the roof the most common materials used include concrete tiles which typically cost around 0 75 to 3.
According to improve net s online roofing calculator a flat roof is significantly cheaper than a pitched roof.
A 900 square foot flat roof in the san francisco area made of concrete tiles costs.
The starter strip and first row of shingles must be applied 25 cm from the bottom of the slope roof or main roof above the slope transition.
Armourfix and armourvalley membranes must be installed and extended 60 90 cm up the main roof underneath the shingles in order to assure a waterproof connection.
Most roof leaks on both flat and pitched roofs are due to failed flashing pieces of metal or other material covering joints between a roof plane and intervening elements such as walls vent pipes chimneys dormer windows etc it s also common that a flat roof of sound design and structural condition leaks simply because the roofing.
Most homeowners choose to convert a flat roof to a pitched one using a simple trussed roof with two angled planes.
A flat garage roof isn t the best thing to have on a structure as it s subject to pooling water and snow.
Finally the decision to convert has to gain approval from a certified building professional or engineer.
