Conservatory roof leak

[GusGF]

Yes the water dripping down the glass is on the outside. It's raining persistently here but can't see a drop of water coming through today, typical! Or even a sign of water marks on the inside of the section I'm pulling down. Originally years ago when all this started the water was dripping from halfway down the glazing bar/rafter which is the corner one in the photo. This stopped but the leak from the cloaking continued (from what I call the jointing strip) and then it moved long to the. right to where the cloaking meets the window,

 

[GusGF]

Those illustrations are really helpful thank you. When the conservatory folk came out they tried to blame the leak on the house roof letting water in i.e. above the house soffit. I was't convinced simply beause of the original leak which was coming from half way along the corner rafter. This stopped when they hammered down on the suspect rafter. But just maybe the leak continued on down to the box gutter soffit, what do I know.

I'm going to wait for the next leak for some clues. Normally it takes a day or two of rain after a dry period for the leak to reappear. I just wish I could more easily take down both soffits to get a better view. Right now they are not budging and I don't want to damage the PVC. I'm going to try and hunt down an Ultraframe installation guide. Thanks again for all your help

 

[crank39]

The leaks from the rafter is a seperate leak altogether, if it was dripping out halfway down where the jack rafter joins the hip rafter usually requires the glass to be lifted out and some silicone applied around the nut and bolt that joins them together, water running down hidden inside is normal but when theres a joint halfway down they'll be a nut and bolt which can act as a bit of a dam and water can't escape and overflows and comes through the joint, probably one of the easiest leaks to fix. If the water was freely running past this joint then it just drips into the gutter, if you get some stepladders and slide up one of the rafter end caps you'll see the cross section of the rafter, its like an upside down T and the water runs down each side of the vertical upright part so even if water gets in at the top assuming the rafter has no joints the water will just run down and drain into the main gutter.

 

[crank39]

Have a look here at this, the pictures are helpful to visualize what i just said above about water running down inside the rafters and blts where the joints are

Google Image Result for x-raw-image:///6951bb3456781595bc6ba849a5a2373f685afc584e51ed7a66fc8ae96ff2ca3a

 

[GusGF]

Pictures are excellent esp the one on page 6 really helps. Now I'm praying for a leak to take place But after a days rain, not a drop!

 

[GusGF]

In the second photo you can see the box gutter going from left to right and the lower arrow pointing to where the water is leaking through. On the outside of the window you will see some rainwater leaking from somehere but on this occasion no leak on the inside but this mirrors where the leak would be if it had leaked on the inside. I've ripped away the box gutters insulation to try and get a better idea what's happening. The water seeps through either from the sponge which is above the foil or just under the foil insulation. The foam insulation on the LHS of the arrow is dry so it's coming from the RHS of the arrow. It probably needs dismantling of the gutter to see what's happening. What doesn't help is we could have heay rain for a day and nothing comes through and then another day light rain and we have a leak! Unpredictable!

I've also noticed the rafter joins have lost their silicone filler and I expect this is from magpies picking at it. What's the best way of fixing this? I weight 91kg would the rafters support me?