Double lap tiles on eaves

benjiman · 22 Oct 2017

Hi all,

Looking for a bit of clarification for a porch lean to roof using redland plain tiles.

Does the first row of tiles have to start with 2 tiles over lapping each other.so pretty much on top of each other?

I have seen roofs where you can see teo tiles stacked ontop of each other if looking from front ways and then the normal overlap..

Then other roofs also with plain tiles that dont seem to have that.

What is the correct method?
Thanks

catlad · 22 Oct 2017

There is an eave's coarse / under... they are shorter, you will also need some for the top coarse.

datarebal · 22 Oct 2017

straight forward

Blagard · 24 Oct 2017

You will also need some tile and a half. Those are the wider tiles that as their name means they are a full tile and half a tile wide in total. Because you may also need one for the eaves course the normal way is to cut off the bottom bit of a tile and half to make it as short as the other eaves tiles. While you could use half tiles at the ends of courses where needed (They are cut from a full tile), that is the absolute minimum size. far better is to cut down a tile and a half.

So there you have the basics. The short eaves tiles to put down first, and another course of them at the very top together with Tile and halfs at the ends of courses where necessary and finally the ordinary plain tile itself. With those three types of tiles you can do most plain tiled roofs.

benjiman · 24 Oct 2017

Thanks for the help guys..good pdf and blagard thanks for those helpful tips. I have picked up the tile and halfs.

Made a start today and run into a problem with the eaves course and next courses..

Ive setout battens to check that im doing it ok...put eaves tile first then a full tile ontop..then set another batten..but wheb placing a tile onto this one it doesnt seems to hook properly onto the batten..see pics..it just doesnt quite seem right.

Any suggestion?

datarebal · 24 Oct 2017

you need something to support the eave at the correct height . This can be a fascia or even an arris rail. Your pictures seem to indicate they are unsupported.
Having said that the gauge (spacing)

looks fine

noseall · 24 Oct 2017

As per Data, you need to 'kick' the first course of tiles. What pitch is the roof?

benjiman · 24 Oct 2017

Pitch is around 40 degrees.

I will put the fascia to support once ive got the setting out correct.

I have actually screwed down the eaves and 1st course of tiles temporarlily just to help with settting out..

So eaves and first course is full tight to battens. Is this the correct height? Or is this where the adjustment needs to happen?

catlad · 24 Oct 2017

Looks like the fascia is too low.
The pitch looks low.

datarebal · 24 Oct 2017

40 degrees a nice pitch for plain tiles. camera angle makes it look more like 20.
it is normal practice to set the roof out between fascia and abutment/ridge.
doing it without just makes life awkward as you have just found out.

benjiman · 25 Oct 2017

Ok so it appears its not 40 degrees..its a alot shallower as per datas observation and hence the problem im facing.

Short of rebuilding roof is there any way to still use the plain tiles as ive taken delivery already!

noseall · 25 Oct 2017

benjiman said:
Ok so it appears its not 40 degrees..its a alot shallower as per datas observation.

Well, of all the cheek!

benjiman said:
Short of rebuilding roof is there any way to still use the plain tiles as ive taken delivery already!

Is your pitch less than 35 degrees?

catlad · 25 Oct 2017

I have just measured it at 25 degree's

benjiman · 25 Oct 2017

I will check with angle finder tomorrow. But catlad you are probably spot on!

What are my options?

catlad · 27 Oct 2017

Well it depends what you are trying to achieve.
Is it an internal or external porch.

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Double lap tiles on eaves

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