Hi all - just after a bit of advice before my builders return after the weekend.
The builders finished our extension walls up to wall plate on Friday (just before a huge downpour of rain - so I have only been out now to check on it)
They have used 4x2 wood as per normal, but I believe they have finished it too low - They have finished the height based on the rafter sitting on top of the wall plate (without any allowance for the birds mouth cut depth in the rafter) - So when rafters with the birds mouth cut are fitted, the rafters would be about 50mm lower than they should be
If this is indeed the case, could a second 4x2 timber be added on top of the existing wall plate to get the height back to correct - or will they need to remove current wall plate and cut blocks below and rebuild to make up to the correct level with single wall plate?
(or could a 4x4 be used?)
Many thanks in advance - If further explanation is required, please do let me know -
The builders finished our extension walls up to wall plate on Friday (just before a huge downpour of rain - so I have only been out now to check on it)
They have used 4x2 wood as per normal, but I believe they have finished it too low - They have finished the height based on the rafter sitting on top of the wall plate (without any allowance for the birds mouth cut depth in the rafter) - So when rafters with the birds mouth cut are fitted, the rafters would be about 50mm lower than they should be
If this is indeed the case, could a second 4x2 timber be added on top of the existing wall plate to get the height back to correct - or will they need to remove current wall plate and cut blocks below and rebuild to make up to the correct level with single wall plate?
(or could a 4x4 be used?)
Many thanks in advance - If further explanation is required, please do let me know -