Roof questions

Sofia328 · 27 Feb 2020

Our builder finished our new pitched roof with concrete tiles for the extension.

Can I ask some questions about it?

1. The underboard of the roof over hang is plastic board (the same as the UPVC fascia board) with cement filled between this plastic board and tiles. Does cement bond to plastic? How urgent do we need to rectify it?

2. The last row of roof tiles were cut short (nearly half is cut), which I believe is not right. Will this cause leaking or just not looking good? Does the batten gauge have to be rectified? I have been told the batten gauge should be divided sort of evenly.

Thanks for your advice!

plastic_peanut · 27 Feb 2020

Pictures speak a thousand words. Take the time to add detailed photographs and you will save time and get a better response

Sofia328 · 28 Feb 2020

Here are pictures.

datarebal · 28 Feb 2020

plastic under cloak to the verges is wrong, cement fibre or slate should be used to a wet verge.
mortar work is very poor and i wold not accept it.
the batten gauge should indeed be equal up the rafter length .
to correct this it would all need to come off.
The first course that has been cut need not been cut at all more head lap could have made this a little better
The valley detail is wrong, lead is too short they have bodged that with a piece of gash lead
general standard very very poor

Sofia328 · 28 Feb 2020

Thanks for your reply.

unfortunately, our builder has gone without finishing our project. His workmanship is really very poor. Anyway, we need to move on.

Because we have limited funds left now, I am wondering how urgent it is to redo this kind of roof. Can this poor roof stay for a few months or a few years without leaking (if I ignore the bad looking of it)?

datarebal · 28 Feb 2020

the valley may cause an issue sooner rather than later.
There are a few unseens such as tile head lap , lead detailing to the up stand thing with copings on.
How long is a piece of string really..

No good having a 30 grand kitchen when your roofs no good

Alastairreid · 28 Feb 2020

The wet verge can possibly be changed over to dry.
The felt draped into gutter should be replaced with lead.
It's a terrible job...the weak points are the detailing around the chimney and any other protrusion.
Cant tell from a couple of pics how long it will last.

Sofia328 · 28 Feb 2020

I took more photos of the wet verge.

The lead flashing along one side of the parapet wall is totally rubbish. I will get it sorted first as an urgent repair. But the parapet wall itself is very ugly as well...

Alastairreid · 28 Feb 2020

Looks like they have used dpc for the soakers.
The brick work is worse than the leadwork.

Sofia328 · 28 Feb 2020

Alastairreid said:
Looks like they have used dpc for the soakers.
The brick work is worse than the leadwork.

Which part is called soakers? Is it the valley on the other side of the parapet wall? I have more photos to show it.

Sofia328 · 28 Feb 2020

Alastairreid said:
Looks like they have used dpc for the soakers.
The brick work is worse than the leadwork.

Sorry, just understood it. The soaker must be what call as lead flashing.
We are trying to lower the parapet wall if possible. This was built by the builder after months of leaking on the left side of the valley (as seen in the photo of my last reply).

catlad · 28 Feb 2020

I'm struggling to work out what that new brickwork is doing coming out of your roof? I very much dough't that will be water tight for long.

bobasd · 28 Feb 2020

the only bit of a soaker we can see (on the RH side) looks like lead - thats if it is a soaker.
soakers are typically hidden under the tiles.
it looks like flashband has been used as flashing on the RH side?

the roof coverings are a mess - cocked up tiles and out of bond.
the parapet's irrelevant - drop it, & roof over.
the valley is a nonsense. replace it with a modern trough.

you dont show the verges from above but they will probably need re-doing?
whats been hidden we obviously cant see so dont know?

use a roofer to sort the above at a min. - or bite the bullet and re-roof with a pro roofer.

^woody^ · 28 Feb 2020

Be jeezus that's awful. I'd hate to think what the rest of the build is like, or even the things you can't see.

Remember that once the builder has been paid and is off site, it's very very difficult to get things rectified. And that roof should be damp and problem free for decades - and it looks like it will only be months.

Sofia328 · 28 Feb 2020

bobasd said:
the only bit of a soaker we can see (on the RH side) looks like lead - thats if it is a soaker.
soakers are typically hidden under the tiles.
it looks like flashband has been used as flashing on the RH side?

the roof coverings are a mess - cocked up tiles and out of bond.
the parapet's irrelevant - drop it, & roof over.
the valley is a nonsense. replace it with a modern trough.

you dont show the verges from above but they will probably need re-doing?
whats been hidden we obviously cant see so dont know?

use a roofer to sort the above at a min. - or bite the bullet and re-roof with a pro roofer.

We have got roofers to have a look. Most of them do not even want to fix it. They said everything needs to be ripped off and re-done, which is fair, but quite expensive for us after paid the build a fortune. And the pricing are also varied very much from different roofers.

I was hoping the roof could stay a few years. And we do the necessary repair to keep it functional (no leaking at minimum). Looks very difficult to find a roofer/builder who would like to work on such poor work.

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