Hello,
I need some help and would be grateful if you could respond.
I plan to use 20w/12v furniture spotlights that are 2cm deep and only need 5cm air gap.
I'm thinking of having 6 in a room that is 11 sqm.
I will use 45x70 battens with gypsum board at 1.3cm; I know it only gives 5.8cm - 2cm = too small an air gap, but I have done tests and it doesn't get as hot as you might think after 1cm above the fixture.
1. Anyway, should I perhaps turn the batten so it becomes 70mm lower, is that okay???
That would then result in a 7+1.3cm lower ceiling, to be on the safe side when possibly switching to stronger spotlights in the future.
I don't want to double-cross the battens so it becomes 45 times 2.
2. Should the battens be placed right up against the walls or should it be like laying a floor and leave a bit of space???
3. I plan to use brown plugs at 40mm and drill with an 8mm bit, does that sound correct??
http://www.clasohlson.se/Product/Product.aspx?id=53810198
What screws should I use to go through the batten and then into the plug if I am going to use a 4.5cm or 7cm high batten???
Thank you very much
I need some help and would be grateful if you could respond.
I plan to use 20w/12v furniture spotlights that are 2cm deep and only need 5cm air gap.
I'm thinking of having 6 in a room that is 11 sqm.
I will use 45x70 battens with gypsum board at 1.3cm; I know it only gives 5.8cm - 2cm = too small an air gap, but I have done tests and it doesn't get as hot as you might think after 1cm above the fixture.
1. Anyway, should I perhaps turn the batten so it becomes 70mm lower, is that okay???
That would then result in a 7+1.3cm lower ceiling, to be on the safe side when possibly switching to stronger spotlights in the future.
I don't want to double-cross the battens so it becomes 45 times 2.
2. Should the battens be placed right up against the walls or should it be like laying a floor and leave a bit of space???
3. I plan to use brown plugs at 40mm and drill with an 8mm bit, does that sound correct??
http://www.clasohlson.se/Product/Product.aspx?id=53810198
What screws should I use to go through the batten and then into the plug if I am going to use a 4.5cm or 7cm high batten???
Thank you very much
90 and 120 mm screws respectively. Drill out the timber so it pulls into the plug.
As I see it, you have two choices. Either lower the ceiling by 70 + 13 mm, i.e., reverse the beams, or find spotlights that don't require as much clearance. There are 12V 20W ones that require as little as 20 mm.
Yes, that's what I mean, I will have 20w 12v from hide a lite, which doesn't require much but maybe one should make it 70+13mm and be able to switch to stronger spots in the future if needed. Otherwise, I'd want 45+13mm.
Servicesnickarn, thanks for the info, but if I'm going to have a 45mm batten + 40mm plug, won't that mean a maximum of 8.5cm screws??? Otherwise, they will stick out from the batten. And what do you mean by "Drill through the batten so it pulls in the plug"???
Do you mean I should drill straight through the batten with an 8mm drill???
Thanks for the quick replies I got from you.
Servicesnickarn, thanks for the info, but if I'm going to have a 45mm batten + 40mm plug, won't that mean a maximum of 8.5cm screws??? Otherwise, they will stick out from the batten. And what do you mean by "Drill through the batten so it pulls in the plug"???
Do you mean I should drill straight through the batten with an 8mm drill???
Thanks for the quick replies I got from you.
It's not as dangerous if the spotlights are close together on a concrete ceiling. It would only affect the lifespan of the lamp itself, as it might get too hot. If screws and plugs are to be used, drill a bit deeper than the length of the plug and choose a slightly longer screw so that the top of the screw goes through the top of the plug. That is, 45 batten + 40 plug + (at least 5 or more) means that the screw should be at least 90mm long. I assume the screw will be around 5-6mm wide, and that's the size hole you drill in the batten since the screw is meant to fasten into the ceiling, not the batten. If you drill 8mm, a larger washer is needed for the screw head to grip the wood.