Trocal roof or tile effect tin?

DrPhilG

I have an ongoing issue with the roof of an extension. The roof was put on a few years before we bought but the problem is that it is not a steep enough pitch for the tiles which means that during wet windy weather (hello, it's Donegal) the rain blows back up under the tiles and we end up with damp and leaks.

I've been told that tiles are not an option due to the angle of the roof, so it has to be tile effect tin, or Trocal.

There's a pretty big price difference, €1350 vs €2170.

Is it worth the extra cost? In terms of lifespan, insulation, noise (during hailstones etc).

BryanF

Trocal (or any reputable 'single ply roofing membrane') would be my preference over tile 'effect' roofing any day. I'd look at fibreglass option if cost is a concern.

How low is the pitch? Is this is in a built up area? We'd need to know the visual impact before commenting on the best solution for a specific site.

Can you post a picture or two?

mykillokneel

If you have velux windows or similar you'll have to get them raised as if it was a flat roof if you use trocal or fibreglass. Also ply out the roof etc so more details in those type of roofs in case that cost isn't built in. Don't like the tile effect myself but if that's what you need to get its better to be dry first and foremost.

DrPhilG

mykillokneel wrote: »

If you have velux windows or similar you'll have to get them raised as if it was a flat roof if you use trocal or fibreglass. Also ply out the roof etc so more details in those type of roofs in case that cost isn't built in. Don't like the tile effect myself but if that's what you need to get its better to be dry first and foremost.

No windows, and the cost quoted is including the ply underneath the trocal.

The builder said that the main difference is sound reduction. Hailstones on a trocal roof will be a damn sight less noisy than on a tin one.

DrPhilG

BryanF

DrPhilG wrote: »

No windows, and the cost quoted is including the ply underneath the trocal.

The builder said that the main difference is sound reduction. Hailstones on a trocal roof will be a damn sight less noisy than on a tin one.

Be very careful that the builder is insulating this adequately and ventilating the roof space as required (depending on whether its a cold or warm roof buildup)

DrPhilG

BryanF wrote: »

Be very careful that the builder is insulating this adequately and ventilating the roof space as required (depending on whether its a cold or warm roof buildup)

Thanks. I'll quiz him on that before proceeding.

Any thoughts on which type to get? Is the Trocal worth the extra in your opinion?

Obviously the quick fix is to go easy on the pocket, but long term maybe not. I know if I was buying a house a tin roof would put me off.