Hi All
I am planning ahead in regards to my flat roof for the garage. It is completely isolated in the garden and there are no walls on either side to use the bolted wall plate. The builder is in process of laying the block work sometimes this week. I have watched EPDM videos on youtube and it looks like a reliable and easy way to go about.
Bricky has told to me that he may not have time to do the flat roof and it is something a competent DIYer can do. So, I am more than willing to take up the challenge if I don't find someone else willing to do it in reasonable time and cost.
Width of the garage is around 3m and therefore I am thinking to use 6" x 2" timber for roof rafters with 400mm spacing.
These are the questions I have.
Option 1 is to do a wall plate on the top course and then use furrings to create the slope? (seems to be a lot common) However this technique will need a wall straps if I am right and inside the garage, since I am not plastering, these wall straps will be clearly visible (not the end of the world). Second issue this option may cause is the overall height which may get over 2.5m. The door is roughly 2.1m + lintel + timber for wall plate + rafters (6 x 2) + OSB3 board.
Option 2 is to use joist hangers, not sure if this is even an option tbh. Can the Masonary joist hangers be attached on the top of the last block with masonry screws? This will avoid having wall straps but strength wise, is this okay or there will be too much load on top layer course of the blocks?
Option 3 Attach a timber (8 x 2) across the larger sides (using rawbolts) and use timber (bolted wall plate). Joist hangers will be attached to this of which the roof rafters will be running across.
If you can kindly suggest which method is better, please do. Thanks.
I am planning ahead in regards to my flat roof for the garage. It is completely isolated in the garden and there are no walls on either side to use the bolted wall plate. The builder is in process of laying the block work sometimes this week. I have watched EPDM videos on youtube and it looks like a reliable and easy way to go about.
Bricky has told to me that he may not have time to do the flat roof and it is something a competent DIYer can do. So, I am more than willing to take up the challenge if I don't find someone else willing to do it in reasonable time and cost.
Width of the garage is around 3m and therefore I am thinking to use 6" x 2" timber for roof rafters with 400mm spacing.
These are the questions I have.
Option 1 is to do a wall plate on the top course and then use furrings to create the slope? (seems to be a lot common) However this technique will need a wall straps if I am right and inside the garage, since I am not plastering, these wall straps will be clearly visible (not the end of the world). Second issue this option may cause is the overall height which may get over 2.5m. The door is roughly 2.1m + lintel + timber for wall plate + rafters (6 x 2) + OSB3 board.
Option 2 is to use joist hangers, not sure if this is even an option tbh. Can the Masonary joist hangers be attached on the top of the last block with masonry screws? This will avoid having wall straps but strength wise, is this okay or there will be too much load on top layer course of the blocks?
Option 3 Attach a timber (8 x 2) across the larger sides (using rawbolts) and use timber (bolted wall plate). Joist hangers will be attached to this of which the roof rafters will be running across.
If you can kindly suggest which method is better, please do. Thanks.
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