Hi xlnc1981 If the opening is narrow e.g. a loo window they may get away without an internal lintel. If it's a wide opening hopefully they will have used an inverted T lintel but you may not be able to see it. Regards S
The builders have told me they haven’t fitted an internal lintel - which means the inside block work is unsupported and they were prepared to leave it as that. The stone lintel outside in brick work matches the rest of the house.
Now building regs are saying an R9 lintel needs to go on inner leaf and the builders are saying an r15.
Obv, when I instructed them I expected them to work to building regs.
For a new window opening (upvc window is 1585mm wide) should they are done any damp proofing work before they installed the window?
Hi xlnc1981, An R9 lintel would be appropriate for that opening and if you want BR approval that is what must be fitted. Some form of cavity tray should have been installed with the new lintel. A problem with water ingress above the new window may only occur if rain is driven against the area above the window but you may be lucky that this does not happen. Regards S
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