DIY Doctor

Uneven roof

Postby amateurroofer » Mon Nov 16, 2009 11:43 am

Hi all, please help if you can!

I'm replacing all of the slates and felt on my roof whilst adding an extension to the back that follows the existing roofline. In essence the roof is eactly the same but a bit longer. It's a pitch roof, quite simple with nothing awkward sticking in or out anywhere. So far I have stripped back the old slates and battens (about 80 years old!) and put down a breather membrane and re-battened to the specified gauge. However, when I ran a string line from front to back yesterday, I noticed that the old part of the roof dips down around an inch or so in the middle. It must have done before (wouldn't have gone like it overnight!), so will I notice it when I install the new slates? Or, should I build up the batten where required with another batten on top or half a batten on top? I'm using natural spanish slate.

Any help or ideas greatly appreciated, thanks.
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Mon Nov 16, 2009 11:36 am


DIY asbestos test kits

Postby acsimpson » Tue Nov 17, 2009 9:24 am

I'm no expert so I don't know the correct way to fix this but assuming that the roof is sound do you notice the dip as it currently is when standing on the ground? if not chances are you wont notice it when completed.
Rank: Foreman
Progress to next rank:
Posts: 213
Joined: Sun Jan 18, 2009 11:33 pm

Postby amateurroofer » Tue Nov 17, 2009 10:09 am

Not too much but the new part of the roof (the extension) is perfect and the new roof is costing so much, I just want to make sure that it matches and is spot on. I'd rather spend a little more time on the preparation to ensure all goes well when the new slates are finally laid.

I have since read that you can pack the battens up/out with laths, and I think this is what I'll end up doing. Anyone else done this before?
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Mon Nov 16, 2009 11:36 am

Postby TheDoctor4 » Fri Jul 09, 2010 8:26 pm

For up to 5 FREE quotes from trusted, vetted and insured tradesmen in your area visit the DIY Doctor Find a Tradesman page:
Rank: Project Manager
Posts: 16777215
Joined: Tue Jul 24, 2007 9:12 am
Location: Somerset in the UK in Shepton mallet

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics