Garage repairs including asbestos roof

[morfmedia]

Hi,

I've recently bought a house with a nice double garage but it has a concrete / asbestos roof (confirmed during survey). The vast majority is fine but there is one section which has cracked and has a gap of around 20-30mm. Also the exterior has seen better days and some of the vertical pillars have their internal metal rods showing which doesn't look too promising!

I'm not sure whether to knock down the old garage, which means I'll just bodge the crack for now and save up to get it all rebuilt. If its not worth the hassle then I'll just patch up the concrete pillar on the outside and get it reroofed this / next year.

I am thinking to bodge the repair to use the tape that plasterers use to bridge plasterboard, gaffer tape over that and then use roof mastic roof repair to waterproof it all. Would that work ok through a british winter?

Here are some pics, could you give me some advice on what you'd do?

Garage

Untitled

• morfmedia
• 12 Sep 2010
• 1

Cracking to pillar

Untitled

• morfmedia
• 12 Sep 2010
• 1

Crack in roof

Untitled

• morfmedia
• 12 Sep 2010
• 1

Crack in roof2

Untitled

• morfmedia
• 12 Sep 2010
• 1

Many thanks

PS garage is 22ft deep by 16ft wide so pretty big / expensive to rebuild!