Generally we would expect a flat roof replacement for a typical garage to cost from 1 000 upwards.
Roof dormer cost estimate uk.
Dormer the most common type of loft extension in the uk today the dormer is a small flat roofed extension with a window.
15 16 costs 30 000 34 000 without a bathroom and 38 400 41 000 if you add a bathroom.
If you have a dormer already and you re thinking of cutting a hole and installing it yourself figure 1000 to 1200 for materials.
Adding a dormer bathroom significantly increases your total cost to 160 170 per sq ft.
Smaller projects like adding a window dormer cost about 4 000.
If that s the case dormer window cost is estimated at between 2 500 and 3 500.
Average cost and size.
72 115 per square foot or 25 900 to 41 500.
It typically costs between 2 500 to 20 000 for professional dormer installation or about 115 per square foot.
Basic felt solutions cost around 50 per square metre for the material itself and more high end materials such as modern grp a form of fibreglass going up to 90 per square metre.
However at the very cheapest end of the spectrum replacing the felt roof on a garage should only cost around 1 000 whereas replacing all the slate tiles on a large family home may cost as much as 12 000.
But side dormers and even l shaped dormers where an extension is added to the rear of the dormer are possible too.
Wall roof dormer cost.
It will be in the high end of 3 000 and above if a contractor adds it on.
A large dormer will often be the main element of an attic conversion or remodeling.
In addition to basic carpentry tools the project requires a circular saw a reciprocating saw a framing square and 2 and 4 foot levels.
A simple flat roof dormer at the rear the house can transform an unused attic into a new bedroom or office and can be constructed from around 5 000 on top of the cost of a standard loft conversion cost of adding a dormer window on a basic budget from 5 000 what can you achieve with a mid range budget.
Thus a typical size dormer of 240 sq ft.
Labour costs may then cost around 150 to 250 per day per worker.
There are several options for dormers including shed flat gable and hip.
Larger remodels like adding a bathroom dormer run about 24 000.
35 600 for dormer 20 wide x 18 deep.
Gabled flared gable dormer.
On average putting in a shed dormer costs 125 140 per square foot.
Small dormer 4 x 5 metres with 1 dormer and 1 roof light 31 000 medium dormer 6 x 5 metres with 1 dormer and 1 roof light 40 000 large dormer 12 x 8 metres with 1 dormer and 1 roof light 58 000.
These dormers use more siding because they integrate with the exterior wall but construction and roofing costs are lower than for other types per square foot.
Overall we estimate that the average cost for a roof replacement in the uk will come in at around 5 000 to 6 000.
