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Hi All,
I am a new member, so if this has been asked before I apologise now.
I have extended an old garage (1930) and need to extend the slate roof but have run into a problem. The original slates are 20” x 10” but do not lap on to the upper batten but were pointed underneath with a sand and lime mortar which eventually dropped off and in order to preserve the roof it was sealed with foam some years ago.
I have managed to get enough matching slates (colour and size) and using 38 x 19 battens at the same spacing as the original, like the old roof, the slates are not supported by the upper batten and likely to flap in a strong wind. If I use a second batten it means that the new roof will be 3 slates thick while the old is 2 slates thick, which is a problem where the two meet.
My possible solution to this is using a thinner batten (15mm) below the fixing battens to support the top of the slate.
If all that makes sense is it a reasonable solution or are there better recognised methods? This problem must have occurred before and must have been solved before.
Regards Juan
I am a new member, so if this has been asked before I apologise now.
I have extended an old garage (1930) and need to extend the slate roof but have run into a problem. The original slates are 20” x 10” but do not lap on to the upper batten but were pointed underneath with a sand and lime mortar which eventually dropped off and in order to preserve the roof it was sealed with foam some years ago.
I have managed to get enough matching slates (colour and size) and using 38 x 19 battens at the same spacing as the original, like the old roof, the slates are not supported by the upper batten and likely to flap in a strong wind. If I use a second batten it means that the new roof will be 3 slates thick while the old is 2 slates thick, which is a problem where the two meet.
My possible solution to this is using a thinner batten (15mm) below the fixing battens to support the top of the slate.
If all that makes sense is it a reasonable solution or are there better recognised methods? This problem must have occurred before and must have been solved before.
Regards Juan
