Agreed. The bank won’t care about an old roofing system that didn’t use underlay because they are still protected from the elements. What the lending banks don’t like is the foam insulation that some old roofs had sprayed on them. They may ask for the spray foam to be removed before lending. You will need to look at dry ice blasting to remove from the rafters, battons and underside of the slate; rather than replacing roof. Once removed you will have the original slate attached to the battons with no underlay. These roofs are still good even though some may be very old.
No felt
Jun 01, 2006
Last reply: 4 years ago
23 Replies
You can now use a process called dry ice blasting to remove the foam without having to re-roof. The dry ice particles disintegrate in the air. The process is effective to remove all foam from underside of tiles without breaking them. Most banks won’t lend now where foam has been used for insulation as it also a fire hazard as it is extremely toxic
Spray foam was also sold as a chaep way of "saving" a failing slate roof that had nail rot. The foam sticks everything together.
These terraced houses have nothing behind the tiles at all, you can see out between them in fact. I'm told its quite common in just pre war builds, and to be honest there have been no issues other than certain insects settingup home and tone wrong type of snow incident.
Brian
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required