Felting a flat concrete roof?

[Aeropars]

Hi guys,

I'm new here so go easy on me

I have a small concrete roof at the back of my semi detached house. The concrete seems to be leaking so i'm on a mission to stop the dripping!

Next toors version of this adjoins mine and he has felted the roof however I cant find any articles on what I should do with a concrete roof.

Does anyone have any information on how to go about going this? Is it the same as felting a wooden joisted roof?
I've looked around for specific materials but I'm not sure what I should be going for. I'm likely to get the stuff from Wickes.

Any help apreciated.

Lee

 

[Regencyroofingipswich]

First of all forget about wickes !

For a concrete roof we would usually clean and scrape the surface of the roof until all old moss and dirt is gone, sweep it spotless then apply two coats of bitumen primer which will soak into the substrate and give you a good surface to start on.(let this dry completly)

Then finish the roof in two layers of heat applied torch on felt, first a 2mm sbs underlay, then a 4.5mm mineral sbs top sheet.

Anything you buy in wickes will not be up to the job, go to a roofing merchant and buy proper torch on felt and a blowtorch or get yourself a decent roofer, flat roofing is a specialist job and to do it prperly is not as easy as it looks !

 

[Aeropars]

Thanks for the reply.

How much is it likely to be for a promessional job? We're really only talking 5 square meters.

I dont want to throw a lot of money at ti as I'm likely to be moving within a year or so.

 

[Regencyroofingipswich]

I would estimate you would get this done for around £350- 400 all in and it would also be guaranteed and you dont have to get your mitts covered in black stuff!

 

[SASroofer]

What Regency said, I'd normally suggest asphalt for a concrete roof but if you have to seal to your neighboursfelt roof then felt would be the better option.

 

[Aeropars]

Wow, thats a lot for not a lot of space!

The origional roof was simply coated in something which made it waterproof. I don't really want to spend a massive amount of money so DIY seems to be the way to go.

I'm not fussed about a job to last as its really only to tie me over for a year or so.