New Flat roof

[DAKI]

Hi,

My felt roof which covers a garage and kitchen is leaking terribly (pouring in when its raining). It is 15 years old so I know it needs repairing. It is L shaped and dimensions are approx 25ft long by 20ft and 10 ft in width.
I have had a qoute saying "axter felt and lead cut into walls and remove all ridge & coping stones" The qoute was for £2,400 and a 10 yr gaurantee. This seems a bit steep but I have no idea if this is a fair price.
I have heard about having EDPM installed instead of felt ? would this be cheaper ? some wooden joists would need replacing as well which is included in the above qoute.

 

[SurreyRoofingEstimator]

Looks a reasonable price to me, Single-ply membrane works out to around about £50-75 per square metre dependng on size and torch-on or 3 layer a bit cheaper. The Single-ply membranes wil generally come with a guarantee (insurance backed) of 15-20 years but should last over 30, that said other felt roof systems such as Marley Goldseal or Icopal felts are also available with longer guarantees than 10 years.

 

[Xenon]

Axter is reasonable quality. Used to be Gerland years ago, and had a product called 'Sterile 2000' Guaranteed hernia lifting it, but good felt. Nice finish if you get the tweed brown as well.

 

[mikric]

Worth giving a thought to insulation over the kitchen area

 

[^woody^]

Worth giving a thought to insulation over the kitchen area

By all accounts, the current b/regs (L1a) requires that you give it more than a thought - you have to upgrade the insulation to the whole roof where possible.

See the bits on renovating thermal elements in part L1a

 

[mikric]

Yes Woody, didnt forget about the 25% rule but assumed the flat roof to the kitchen would be under that % given that there is a garage sized in the dimensions given, which didnt include any size for main house roof .

 

[chappers]

Its not 25% of the total roof area for the whole house it's 25% of the roof element you are removing.