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The Natural Philosopher The Natural Philosopher is offline
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Default slate roof - felt or not?

Tanner-'op wrote:
George (dicegeorge) wrote:
There are lots of slipped slates on my roof, with rusty nails,
the local builder recommends reslating the whole roof
rather than patching it again and again.


A good decision.

At the moment there is no felt, he advises felt,
is there any reason not to use felt?


There is every reason to *USE* felt. The main one is that if a slate slips
or breaks then the felt (if properly fitted) will prevent water from
entering the roof space until the slate can be replaced.


The purpoe is to avoid low pressure over the slates due to wind ripping
them off: the felt later is not for waterproofing, it is for windproofing.

By and large there are too many holes in it where nail;s get driven
through to rely on it for waterproofing. I know then when my roof was
felted up before tiling, there were loads of leaks when it rained,
****ing all over the timbers.

or is there an even better option?


A close boarded roof with felt and slate (Welsh slate being the best) but
the cost will frighten you! :-)

I will use a professional for this
as I almost broke my back in a fall a few years ago,
and ladders scare me!


That's a good idea anyway.

Tanner-'op