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Fair point. I just did some calcs and a downlights with a 60degree spread wold light up about 2.6m diameter of floor but then if u bring that to say worktop height or head height that is obviously less.

Lots of negative opinions on downlights. Can I ask why? What's a decent alternative to giving decent light that looks decent? Thanks

I'm finding my end rafter is being straightened by my noggins!! Can't find a straight bit of wood anywhere!!

No - 100m of celotex between rafters, 50mm of celotex below rafters and then plasterboard. I'm thinking that adding a 75mm void between celotex and plasterboard is required. 50mm would be preferred but can't even find downlights to go into this space. Phillips do one which only needs a 60m void...

So do I just cut a small groove in the insulation to put wires between plasterboard and celotex? With regards to the lights, do you have any examples? Don't really want surface mount unless they are very slim. The slimmest built in ones I have found still need a 75mm depth behind the plasterboard?

What is standard proactive for fitting wires in the insulation of a vaulted ceiling or flat roof for that matter. So when you have 100+ of celotex between rafters and then 50mm below then plasterboard. Where do you stick your lighting wires and then if you have some fire rated downlights do you...

Done cheers :) Gable ladder by an203888 posted 25 May 2020 at 7:04 AM

Anyone able to offer advice?! Bump!

I'm going to use pvc 150mm Barge board. Can I use 4x2 timber for the ladders and end rafter? The overhang will be 150mm so don't see an issue with strength. Thanks

Well they make a seperate collar as above but the standard flashing is designed to be used on 15 degree roofs. This is a reply I got from them regarding the collar - "Felt Colar is a membrane that creates the seal around the window to ensure the window is water tight. However this is not an...

15 degrees. Or should be!

Rafters up. Thanks for help. IMG_20200518_163205 by an203888 posted 18 May 2020 at 5:09 PMIMG_20200518_163354 by an203888 posted 18 May 2020 at 5:09 PM

I think they do them - https://www.keyliteroofwindows.com/product-category/accessories/felt-collars/ So I should be getting these with the flashing and windows?

I haven't seen that available for the keylight range. Anything else with the basic installation I should be weary of?

You me a the flashing kit? Or do you mean the extra foam kit that you can buy for velux to stop cold bridging etc? I think keylight windows have this built in with an expanding foam piece.

Hi all. I will be fitting 4x Keylight 780 x 1400 using their double flashing kits (so I will have 2x lots of double windows with no tiles inbetween) onto a 15 degree new build roof, the tiles will be Marley Mendip tiles. I know that 15 degrees is on the limit for roof windows and have heard some...

I was thinking.... Many people seem to secure the top of their rafters on a lean to roof to the header plate with 4 nails (two each side). This fixing method must have the same effect as my cut that I'm talking about as the nails do not pick up the bottom of the wood. I will be using hangers...