junglejim

Thank you for all of the advice so far. i don’t know if this complicates it at all but also worth noting that our sewage and grey water will go to a small pumping chamber sink in the drive which in turn pumps to the main sewer. @Iceverge @ProDave @tuftythesquirrel @Conor

Thanks Conor, that’s interesting. I mentioned that to a plumber who said bc would need external vented svp… do you know where I can find more info about this?

Hi, I’m looking for the best route/method to install the svp. My understanding is that it needs to be 3m from a window opening so will need to go between rafters and exit the roof near the ridge. The roof construction is osb, rafters with rigid insulation between rafters then osb beneath rafters And another layer of insulation. Cutting through this to install an svp feels counter intuitive and could introduce cold bridging… does anyone have any advice in the best way to install, products etc to maintain thermal efficiency. Thanks

Sorry no pics …. Can take some at the weekend. The main roof is on and timber for hip and overhangs is being fitted soon so trying to work out the best way of tiling this section.

I’m doing my own roof and ok so far with all the straight edges but the detail on this end is a bit more technical so I’m looking for advice on how to do this. The roof will be osb solid deck with membrane, counter battens and battens. I’m wondering how best to create the hip and match it in to the roof and also any tips on joining the front porch overhang to timber frame? Thank you in advance for any advice.

Hoping someone can give me some suggestions on this? Thanks

I’m doing my own roof and ok so far with all the straight edges but the detail on this end is a bit more technical so I’m looking for advice on how to do this. The roof will be osb solid deck with membrane, counter battens and battens. I’m wondering how best to create the hip and match it in to the roof and also any tips on joining the front porch overhang to timber frame? Thank you in advance for any advice.

@nod thanks for help. Also any tips on putting the vcl flashing up underneath my breather membrane above the window which is beneath the counter battens? Presumably need to cut back the counter battens to accommodate? Thanks. Appreciate all the tips before I get stuck in.

I’m in the process of roofing our cassette roof (osb sandwich) on new timber frame build…. Felted, counter battens and tile battens are in. I haven’t started tiling yet but will be soon (sandtoft rivius). I’m hoping to start fitting velux tomorrow but have a question… The window openings have been pre made in the factory. Windows are in several different positions so setting out tiles to windows is unlikely to work for all and I’ve already set out horizontal battens based on optimum gauge for my roof (310mm) As the window position is fixed I’m wondering if there’s anything I can take into account to ensure sufficient overlap between flashing and tiles at the bottom and top of the window and ensuring sufficient width of tiles either side. Or… as I suspect will be the case… when I tile, what should I take into consideration? All advice and learning gratefully received.

Thank you for all the tips 👍

Thanks @Dave Jonesand @joe90 That was my initial thought but worried about splitting the batten end by needing to nail it so close to the end. Joining in a counter batten only gives the ends 25mm to nail into. my maximum spacing between counter battens is 400mm and a number of gaps are more like 300 (and a few even less) so wondering if it’s better to have ends between the counter battens so that the ends are overhanging. I wonder if a 150mm overhang is better than nailing close to the end. I figure there must be regulations on maximum allowable unsupported overhang but I can’t find anything.

Curious what the best way to join roof batten ends? They are laid over 50mm wide counter battens. Note sure whether to share a counter batten each overlapping 25mm or whether I need to double up the counter batten?

Soups = Should 😜

I’ve lapped breather membrane over the ridge and will be fitting dry fix vented ridge tiles. I’m hearing mixed opinions about whether I soups cut the felt at the ridge or not. The roof is osb Cassette with 50mm vent gap between insulation and osb… any suggestions? Layers above osb are: membrane, counter batten, tile battens, tiles Advice greatly appreciated 👍

Thanks. Because the roof is a cassette system sheathed in OSB I need to ensure airflow between rafters (soffit vent) and also above the osb and membrane (between counter battens) hence the over fascia vent being above the drip tray. Or at least that’s my understanding.