when fitting roof windows do you bolt together the rafters doubled up or just use long screws?
-
Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.
Double up joist
- Thread starter trevorbayliss
- Start date
- Joined
- 26 Aug 2016
- Messages
- 6,830
- Reaction score
- 1,009
- Country
They just screwed ours, don't know if that's right but it hasn't collapsed!
- Joined
- 7 Feb 2017
- Messages
- 319
- Reaction score
- 58
- Country
depends on size of velux 550 do not need even with 400cc
remember they are roughly the same weight in tiles only normally need doubles if carrying more than one rafter
remember they are roughly the same weight in tiles only normally need doubles if carrying more than one rafter
These are the fixed roof lights about 1000 x 1000. Approx 60kg. Will be doubling up. Just thought i might bolt rather than screw as have a few bolts left over. The extra time is not an issue for me.
- Joined
- 7 Feb 2017
- Messages
- 319
- Reaction score
- 58
- Country
bolts or structural screws are fine
Strictly, as with any structural timber beam they should be bolted as have a timber spur connector between the joists, and this provides true load sharing performance .
But for a Velux, large 6mm screws, or better still coach screws would be OK every 400mm or so.
But for a Velux, large 6mm screws, or better still coach screws would be OK every 400mm or so.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
