Are my roof tiles defective?

[lns22]

Hi all.

Wondering if you have ever seen anything like this before? And if can give an indication of what might be happening to my roof tiles / whether they need to be replaced?

They look like they are curling up in various places and discolouring - when you get up close it seems that the surface of the tile is actually coming off. The change in colour is worst on the two slopes that get the most sunlight.

They were installed about 9 years ago by a Wandsworth Council contractor (Gillmartins), on behalf of the long leaseholders then in the property. We are in discussions with the Council to see whether they took out a guarantee when they procured the works as I (and particularly our downstairs neighbour who paid for 50% of the works at the time) would have hoped the materials would last a lot longer.

Many thanks in advance for any advice.

Kind regards,
Louise

Surface coming off

• lns22
• 4 Jul 2013
• 1

It is definitely the surface coming off - the white stuff is the material underneath the grey...

Rear roof - west facing

• lns22
• 4 Jul 2013
• 1

L shape victorian terrace

Front roof - south facing

• lns22
• 4 Jul 2013
• 1

Tiles curling

Untitled

• lns22
• 4 Jul 2013
• 1

When you pour water on...

• lns22
• 4 Jul 2013
• 1

Some tiles curling up

• lns22
• 4 Jul 2013
• 1

Untitled

• lns22
• 4 Jul 2013
• 1

Untitled

• lns22
• 4 Jul 2013
• 1

 

[ners]

They look like 600mm x 300mm fibre cement slates, maybe eternits. Colour looks bad andseem to be curling. Par for the course really with etetnits. We wont sell eternits anymore because of the colour issues

 

[catlad]

Whoever advised you to go for that tile must have had a few spare or had no experience in roofing they are rubbish, that said and asthetics aside you will probably not have anything to worry about for another 20yrs.

 

[Birminghamroofer]

they are an approved local city council slate in birmingham believe it or not i prefer jutlands

 

[ners]

Same here, cembrit jutlands a much better quality slate.