If you have a dormer already and you re thinking of cutting a hole and installing it yourself figure 1000 to 1200 for materials.
Roof dormer cost estimate uk.
There are several options for dormers including shed flat gable and hip.
Adding a dormer bathroom significantly increases your total cost to 160 170 per sq ft.
Labour costs may then cost around 150 to 250 per day per worker.
The family handyman magazine estimates it takes about 1 800 in materials for a do it yourselfer to build a dormer about 6 feet wide and 9 feet high with one window.
Generally we would expect a flat roof replacement for a typical garage to cost from 1 000 upwards.
35 600 for dormer 20 wide x 18 deep.
15 16 costs 30 000 34 000 without a bathroom and 38 400 41 000 if you add a bathroom.
Average cost and size.
Gabled flared gable dormer.
Thus a typical size dormer of 240 sq ft.
But side dormers and even l shaped dormers where an extension is added to the rear of the dormer are possible too.
Larger remodels like adding a bathroom dormer run about 24 000.
It typically costs between 2 500 to 20 000 for professional dormer installation or about 115 per square foot.
A large dormer will often be the main element of an attic conversion or remodeling.
Dormer the most common type of loft extension in the uk today the dormer is a small flat roofed extension with a window.
It s common to have two of these on the one roof for the sake of symmetry.
If that s the case dormer window cost is estimated at between 2 500 and 3 500.
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.
72 115 per square foot or 25 900 to 41 500.
How much does a dormer addition cost.
On average putting in a shed dormer costs 125 140 per square foot.
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.
Overall we estimate that the average cost for a roof replacement in the uk will come in at around 5 000 to 6 000.
Smaller projects like adding a window dormer cost about 4 000.
In addition to basic carpentry tools the project requires a circular saw a reciprocating saw a framing square and 2 and 4 foot levels.
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.
It will be in the high end of 3 000 and above if a contractor adds it on.