Concrete Roof Tiles

[ik1]

Hi,

I am intending to use interlocking concrete tiles on my new roof probably the marley modern ones but my builder/roofer seems to think he doesn't need to nail/screw them as they interlock.

Can someone please give some advice so I can ensure that I get a good job done and not have to worry about tiles flying off in a storm or something. Do we need to screw every tile? every 2nd or 3rd tile? and what about the end/verge tiles?

I don't mind paying a little extra to him as long as he does a good job.

Regards

 

[noseall]

My moms house is tiled using old staffy blue tiles and there are no nail holes in the tiles so all are just hung off the nibs. Not one is mechanically fixed.

There are no missing tiles and the roof was re-batten/felted in 2001.

The roof is steeper than 45 degree pitch.

I have seen many roofs with non nailed tiles but i have yet to see them blow off.

We always fix at eaves and verges and at the ridge. Steep roofs do require alternate fixing.

 

[SurreyRoofingEstimator]

To be absolutely sure you could get a fixing spec from Marley which (unless you have a pitch of 45 degrees or over) will likely say nail at all perimeters or if more generally local areas nailed (through the RH nailhole), local area are defined as 15% of the roof measured from all perimeters, something like 6 courses from horizontal and 5 courses from vertical perimeters.

TBH when we do re-furbs, unless the pitch is too great we nails every alternate course, never had one fail yet in over 30 years

 

[Roofer]

TBH when we do re-furbs, unless the pitch is too great we nails every alternate course, never had one fail yet in over 30 years

Ah 'the good old days'

So much better than 'tiles to be nailed and clipped in an alternate diagonal pattern'

 

[shane12345]

Nail every 3rd course, and the end 2 rows at each verge (both rows all the way up)

 

[yorkie1969]

So is he a builder or a roofer? I remember the time I let my dentist do my my wifes brain transplant... Do you see where I am going with this?
Listen to the advice from the actual "roofers" here please? Oh, and do not screw them, because when some poor soul comes to repair them he will have one hell of a job getting the broken ones off.