On 22/06/2019 20:43, Tim Lamb wrote:
In message , "dennis@home"
writes
On 22/06/2019 09:31, Tim Lamb wrote:
In message , Brian Reay writes
Jim GM4DHJ ... wrote:
why do the English not use sarking ? ....




They do.

Some older houses may not have it but more modern ones certainly do.
All
the houses we own/have owned have sarking felt.
Â*Huh! Now try and get your builder to use it!
They have latched on to porous membrane in the firm belief that roof
ventilation is no longer necessary. Also try and get them to use the
grade required for your area wind prediction and double sided tape
for laps:-(


Building regs require roof vents so they will fit them.

None fitted here. Building control were stressy about maintaining a 50mm
gap between the insulation and the membrane but ignored the lack of
soffit vents.

Not even ridge vents?





--
"When one man dies it's a tragedy. When thousands die it's statistics."

Josef Stalin