Having no under felt unless there are missing slates will not cause rot.
Replace roof sarking.
Recommended for use in warmer climates.
If some are damaged replace them with new ones after putting the tiles back.
Holes in roofing felt are quite common here we repair a hole in some roofing felt that is underneath the tiled roof.
Dismantle all roof battens to enable you to install sarking beneath them.
Before using felt the slates were back pointed with sand lime cement and horse hair mix.
You may use a staple or nail gun to fasten them with the rafters.
Thermoseal reflective foil roof sarking is a non permeable vapour barrier to reduce the transmission of moisture into the home and contribute r value to the roof system.
Unfasten all clips that take hold of the roof tiles.
The only other thing the felt does is to keep out windblown snow and the only way to replace it is to strip and re tile slate the whole roof.
When i retrofitted foil sarking beneath charcoal tiles the temp difference in the roof cavity was easily 10 15 degrees from so bloody hot standing under the manhole it feels like standing in front of an open oven to i can work in the roof space for a few hours even in summer.
Remove the ridge capping to easily get rid of roof tiles and clips.
It does fall off over the years.
The average price range for a roof replacement can run from 260 to 700 per square foot depending on the roofing material used.
This would involve stripping the lower layers of tiles from the roof and adding a 500mm strip of eaves protection felt before reinstating the tiles.
Someone might be able to help you out for as low as 150 to 350 per.
Typical surveyor s comment though know s bugger all about roofs.
Obviously the roof is original ie never been re slated.
Sarking felt is to prevent dust and draughts blowing under the slates.
Reinstalled original roof tiles and new tile clips rebed all ridge capping repointed all ridge capping with flexible pointing water tested to ensure no further water leaks installing heavy duty roof sarking to the roof cavity is great for added protection from the elements and reducing moisture in the roof cavity.
Brought to you by http www ultimateha.
