Roof tile question

realjian · May 16, 2021 12:16 am

I’m building in Canberra . I noticed that the corner rooftiles are very rough and the points have a rough finish (see below). The tiles between the valley are also not neatly cut. Are they normal or Should I be concerned? Grateful for your advice! Cheers, Jian Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅

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aussieta · May 16, 2021 7:59 am

unfortunately that is completely normal

SejaeD · May 16, 2021 9:52 am

realjian

I’m building in Canberra . I noticed that the corner rooftiles are very rough and the points have a rough finish (see below). The tiles between the valley are also not neatly cut. Are they normal or Should I be concerned? Grateful for your advice! Cheers, Jian Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅

Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅

that work is a bit sloppy. Nothing of great concern in the photos but if you have a lower roof are you able to post some photos of the flashings?

you can trim that sarking back yourself in line with the roof tiles so you dont have to see it.

A good site supervisor would have made them fix that

realjian · May 16, 2021 12:53 pm

Thanks guys for the response. I’m a bit relieved that it is not too out of general practice. But I will raise my concerns with the builder to see what he can improve.

Berek · May 16, 2021 8:41 pm

Aussieta was being sarcastic I believe i.e. sloppy work.
Why is the valley flashing not the same colour as the tiles?

aussieta · May 17, 2021 3:26 pm

sorry, not sarcastic
quality does not appear to be available in the building industry anymore
i would be upset if that was my house, but nothing will come from complaining

Berek · May 17, 2021 8:41 pm

That’s what I meant to say. Bad quality is the new normal.

newdev · Jun 28, 2022 5:52 pm

Hi all, my new double story build will have cement tiled roof and pitch is over 20 degrees and house is in metro melbourne (not in bush fire zone). So roof sarking was a upgrade and had to pay approx $3k more.
With roof sarking any thing needs to be done. I read on forums that whirlybird is must and sarking must be installed with anti-ponding boards but builder didn't mention anything about these. Any advice or thoughts? Worried if not installed properly then sarking may cause problems than any benefits.

Hi @ashington Homes Simoen, tagging you here as you might have some suggestions.

thanks all.

Ashington Homes · Jun 29, 2022 10:16 am

newdev

Hi all, my new double story build will have cement tiled roof and pitch is over 20 degrees and house is in metro melbourne (not in bush fire zone). So roof sarking was a upgrade and had to pay approx $3k more.
With roof sarking any thing needs to be done. I read on forums that whirlybird is must and sarking must be installed with anti-ponding boards but builder didn't mention anything about these. Any advice or thoughts? Worried if not installed properly then sarking may cause problems than any benefits.

Hi @ashington Homes Simoen, tagging you here as you might have some suggestions.

thanks all.

First of all, I have been under the impression that roof sarking is mandatory under the BCA. Is it a victorian thing to make it an optional extra?

I need to go and check the BCA now.

Will be back

Simeon

Edit: okay checked, it is only mandatory for roofs with rafters longer than 6m. However I would question the quality of your builder if they aren't doing it as standard.

We do all roofs and walls and it costs around $2,000, Super cheap for the benefits you get. I keep forgetting how some builders cut corners. Not sure why I do that.

SJT76 · Jun 29, 2022 11:34 am

My understanding is that ventilators are more important with sarking. We're putting two ventilators in (house is quite large).

newdev · Jun 29, 2022 3:51 pm

Thanks Simeon. Builders proposal includes sisalation and sarking based on the energy report or bush fire requirements. I am not in bush fire and energy report has achieved over 6 with no mention of sarking. So when clarified, builder said it can be added with the cost. I got no idea on rafters length as can't interpret structural engineering properly. I read in forums other people paying for roof sarking so I also upgraded.

Any comment on whirlybird and anti-ponding boards please?

Will whirlybird installation damage the sarking and in cold days of melbourne, rather retaining the warm air, it will keep the roof cool, so is it good or bad? Any problems/issue if no whirlybird with sakring in tiled roof? any thought on installing whirlybird after hand over?

Also thinking to have solar installed in future, will that also damage the sarking?

Thanks.

Ashington Homes · Jun 29, 2022 9:03 pm

newdev

Thanks Simeon. Builders proposal includes sisalation and sarking based on the energy report or bush fire requirements. I am not in bush fire and energy report has achieved over 6 with no mention of sarking. So when clarified, builder said it can be added with the cost. I got no idea on rafters length as can't interpret structural engineering properly. I read in forums other people paying for roof sarking so I also upgraded.

Any comment on whirlybird and anti-ponding boards please?

Will whirlybird installation damage the sarking and in cold days of melbourne, rather retaining the warm air, it will keep the roof cool, so is it good or bad? Any problems/issue if no whirlybird with sakring in tiled roof? any thought on installing whirlybird after hand over?

Also thinking to have solar installed in future, will that also damage the sarking?

Thanks.

So antiponding boards are used to stop the sarking sagging under the tiles.

The sarking can be cut to fit your whirlybirds and then taped back up. Not an issue at all

newdev · Jun 29, 2022 10:54 pm

Ashington Homes

newdev

Thanks Simeon. Builders proposal includes sisalation and sarking based on the energy report or bush fire requirements. I am not in bush fire and energy report has achieved over 6 with no mention of sarking. So when clarified, builder said it can be added with the cost. I got no idea on rafters length as can't interpret structural engineering properly. I read in forums other people paying for roof sarking so I also upgraded.

Any comment on whirlybird and anti-ponding boards please?

Will whirlybird installation damage the sarking and in cold days of melbourne, rather retaining the warm air, it will keep the roof cool, so is it good or bad? Any problems/issue if no whirlybird with sakring in tiled roof? any thought on installing whirlybird after hand over?

Also thinking to have solar installed in future, will that also damage the sarking?

Thanks.

So antiponding boards are used to stop the sarking sagging under the tiles.

The sarking can be cut to fit your whirlybirds and then taped back up. Not an issue at all

Thanks Simeon

SaveH2O · Jun 30, 2022 7:35 am

Sarking is also mandatory if there is a downpipe discharging water through a spreader from a higher roof area onto a lower tiled roof area, The lower section must be sarked a minimum of 1800mm either side of the point of discharge (which is the spreader) and extend down to the eaves gutter in accordance with AS 2050.

This isn't always done.