Pocster Posted July 2, 2019 Share Posted July 2, 2019 Right ! I’m starting to think about where my mvhr , header tank etc are going to go in my limited loft space . I was going to board with T&G directly onto the joists . So then I’ve got a platform for me and the stuff . Assume this is ok . Was also at this point planning where I should fit the loft ladder . Just thinking about access to mvhr for filter changes and header tank if there are any issues . Link to comment Share on other sites More sharing options...
Mr Punter Posted July 2, 2019 Share Posted July 2, 2019 Remember you will need a condense drain from the unit. Make sure you have enough room the get the unit through the hatch and into position. The roof space is not that access friendly so make sure it will all work. Must have been a mission doing the insulation! 1 Link to comment Share on other sites More sharing options...
Pocster Posted July 2, 2019 Author Share Posted July 2, 2019 5 minutes ago, Mr Punter said: Remember you will need a condense drain from the unit. Make sure you have enough room the get the unit through the hatch and into position. The roof space is not that access friendly so make sure it will all work. Must have been a mission doing the insulation! Lol insulation was a mission ! Not 1 truss the same distance apart . Which actually brings me to my next question how do I board with these trusses getting in the way ? - going to be a pig ? Link to comment Share on other sites More sharing options...
PeterW Posted July 2, 2019 Share Posted July 2, 2019 T&G won’t be strong enough for anything other than a small header tank - there are standard details for this. Tanks ideally need to be as high as possible - May be worth a separate platform for this. Link to comment Share on other sites More sharing options...
Pocster Posted July 2, 2019 Author Share Posted July 2, 2019 4 minutes ago, PeterW said: T&G won’t be strong enough for anything other than a small header tank - there are standard details for this. Tanks ideally need to be as high as possible - May be worth a separate platform for this. Ok , so a platform attached to the rafters , is that what you mean ? So no load on the chipboard t&g ??? Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 (edited) Although away I am still thinking about this .... So T&G chipboard is ok sat on those trusses ? . I’m allowing for just my weight and mvhr unit . Will deal with header tank later . As I will have to cut each board around each rafter ( ?! ) I assume I screw noggins into the trusses to support the chipboard where it’s joint isn’t supported by a truss . See it’s not all fun in the sun! Edited July 9, 2019 by pocster Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 Not sure if I need to add extra timber for strength . Say 4x2 going 90 degrees across the trusses ; necessary ??? Link to comment Share on other sites More sharing options...
Onoff Posted July 9, 2019 Share Posted July 9, 2019 What are the nominal truss centres? 600? Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 (edited) 9 minutes ago, Onoff said: What are the nominal truss centres? 600? Yes I was thinking ( not clear in that photo ) that the centre of the trusses all sit on a partition wall ; so that would be a good place to mount mvhr and water tank - but access will be a dog ! Edited July 9, 2019 by pocster Link to comment Share on other sites More sharing options...
PeterW Posted July 9, 2019 Share Posted July 9, 2019 Water tanks need a specific design for the platform. It’s in the standard details. 1 Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 8 minutes ago, PeterW said: Water tanks need a specific design for the platform. It’s in the standard details. What do you mean by ‘standard details ‘ ? . It’s not in the plans as it’s a header tank supplied with rainwater harvesting system ( once I purchase it ). Link to comment Share on other sites More sharing options...
Mr Punter Posted July 9, 2019 Share Posted July 9, 2019 Just now, pocster said: rainwater harvesting system Why have you got one of those? 1 Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 1 minute ago, Mr Punter said: Why have you got one of those? Because you either install it now or never ! I know there’s a big debate over the ROI with these . But I think it should be compulsory on new builds . Also you are ‘helping the environment ‘ a bit ... Link to comment Share on other sites More sharing options...
PeterW Posted July 9, 2019 Share Posted July 9, 2019 3 minutes ago, Mr Punter said: Why have you got one of those? Cos he hasn't got enough buckets to collect from where it drips from the roof.... 2 Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 15 minutes ago, PeterW said: Water tanks need a specific design for the platform. It’s in the standard details. Sorry when I say ‘water tank’ I of course mean header tank . Googling seems to suggest it doesn’t require any particularly special platform . Link to comment Share on other sites More sharing options...
PeterW Posted July 9, 2019 Share Posted July 9, 2019 5 minutes ago, pocster said: What do you mean by ‘standard details ‘ ? . It’s not in the plans as it’s a header tank supplied with rainwater harvesting system ( once I purchase it ). BS 5268 Part 3 requires the build of a platform on a truss roof in a particular way...?? https://www.minera-rooftrusses.com/pdf/tech_specs/cold_water_storage_tank.pdf 1 Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 Just now, PeterW said: Cos he hasn't got enough buckets to collect from where it drips from the roof.... Ouch ! ? Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 5 minutes ago, PeterW said: BS 5268 Part 3 requires the build of a platform on a truss roof in a particular way...?? https://www.minera-rooftrusses.com/pdf/tech_specs/cold_water_storage_tank.pdf Ah I see ! . Does this apply even if my truss though is supported at its centre point by a stud wall ? . Can understand if the total truss span is unsupported. When I get back will stick a photo up of the central section . Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 4 minutes ago, pocster said: Ah I see ! . Does this apply even if my truss though is supported at its centre point by a stud wall ? . Can understand if the total truss span is unsupported. When I get back will stick a photo up of the central section . But anyway that seems simple enough to do .... thanks ! ? Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 Access still seems a pig was hoping for one loft hatch to access header tank and mvhr ! . But don’t think that will be possible especially as I wanted neither above a bedroom which leaves just the bathroom and hallway . As I can see header tank must be central of trusses . Mvhr erm ..... Link to comment Share on other sites More sharing options...
Onoff Posted July 9, 2019 Share Posted July 9, 2019 Think you'll want 22mm rather that 18mm chipboard t&g with 600mm centres. 1 Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 Mvhr is the dog now . Assume you want the air in/out pipework as short as possible . But if tanks in the middle wherever I mount the mvhr will be a fair distance from a suitable external wall . Link to comment Share on other sites More sharing options...
PeterW Posted July 9, 2019 Share Posted July 9, 2019 8 minutes ago, pocster said: a fair distance from a suitable external wall . Go through the roof...? If you have Marley Modern tiles, I may have a couple of Timloc roof vents that would be usable to go straight through the roof for a reasonable price... Link to comment Share on other sites More sharing options...
Ferdinand Posted July 9, 2019 Share Posted July 9, 2019 (edited) On 02/07/2019 at 12:18, pocster said: Right ! I’m starting to think about where my mvhr , header tank etc are going to go in my limited loft space . I was going to board with T&G directly onto the joists . So then I’ve got a platform for me and the stuff . Assume this is ok . Was also at this point planning where I should fit the loft ladder . Just thinking about access to mvhr for filter changes and header tank if there are any issues . Aren’t you supposed to be on holiday in Lubricious, with your Truss left at home? Edited July 9, 2019 by Ferdinand 1 Link to comment Share on other sites More sharing options...
Pocster Posted July 9, 2019 Author Share Posted July 9, 2019 1 minute ago, PeterW said: Go through the roof...? If you have Marley Modern tiles, I may have a couple of Timloc roof vents that would be usable to go straight through the roof for a reasonable price... I read it was best to avoid the roof due to the associated cost and hassle ( I can’t do heights ) ! Is there a maximum length the air intake/out can be ? Or is it simply as short as possible??? Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now