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Do you have any experience with open webbed or any joists being spaced at 600mm. I've only done them at 400 in the past which have been fine. Changing a full house from 600 to 400 centres would add a lot onto the cost so I'd prefer to avoiding unless it's strongly advisable. Is the oxygen...

Certainly wouldn't be notching posi or ibeams that's an instant fail. I do prefer copper pipes over plastic though, there's people for and against but I know copper pipe & fittings stand the test of time, it's the rubber o rings in plastic fittings I'm not 100% about. I might have to bite the...

Good to know that, just have to ensure they are correctly sealed for MVHR purposes. Posi & I joists looks awkward for fitting copper pipe without multiple couplers.

I built them in last time but heard a while ago that they had stopped letting you build them into the inner leaf and you now have to support them via joist hangers. I'll get a price for 9 x 3's and see how they compare, The £3600 Posi joist quote says it's for 600mm centres but they vary...

Looking at an estimate I received for Posi joists, they came in at £3600 inc VAT. The MVHR ducting shouldn't need passed through any joists because they all drop vertically down from the loft space and others run parallel to the joists. I'm not sure I can have standard joists as some of my spans...

I'll be doing a lot of the installation work myself or with friends in trades, it's nice to have whatever is easiest but as installation is a one time event, I'd rather choose the strongest or the best for sound and acoustics. At a glance, if both are the same strength, the metal webbing webbing...

Are any of these joists preferred over the other for different situations in a new build. Posi - Metal webbing, I joist the solid chipboard type. Looking to build a 2 storey detached home with MVHR using semi rigid or galvanised ducting (Not spec'd yet) along with the usual services. What's...

Thanks for your reply. No there have been a handful of plots sold and some built, bat surveys have been completed and outline permission granted. It was suggested to me when purchasing land of this type to consider things like knotweed and when checking an online uk map of reported and confirmed...

Last uploads. I've just found some early September vs January videos i took of the land. Here are some screenshots and pictures The summer is a lot thicker but looks like its been cleared with the space difference. Does any of this look like it?

Out of interest are any of these k otweed or just bracken etc. Everything looks similar in winter. These were out on a walk today

Thanks Theres already some houses around it Its a medium sized dwelling carefully positioned within the trees which are to be left as they are.

I'm looking to buy some land in a woodland that needs cleared before building and wanted to check that there is no knotweed. There is a lot of Rhododendron and some bracken to clear but im not sure what knotweed would look like at this time of year? The land has been left for 30 years unattended...

Handy link that thanks. I will require full air from outside as im looking to fit mvhr which will need air tightness.

I looked into doing this a few months ago but there doesnt seem to be an easy or cheap way to do it if at all without a fireplace. With it being a free standing corner stove to exit the flue right out of the wall it meant using the twin wall on the exterior which i hate the look of over 9m so...

I never knew there was an optimum temperature for the stove pipe. They must all differ pending the stoves KW output does it? I this stage i don't know what the building inspector will allow but I was told that adding a stove can sometimes help with the SAP calculations. I't wouldn't be used as...

That's terrible warranty cover, most websites selling the stoves won't mention that it's 1 year due to them being a non authorised dealer. What's the cost breakdown to get you to 4k+? I was looking at stoves around £1500/1600 and then quoted twin wall flue at £60 per m, so I'd be needing 9m for...

I think i'd be opting to bringing it in through the wall rather than the floor, just not sure if it was best to build it into the wall while the house goes up or drill a hole once completed so i's exactly where it needs to be. 4k is quite a lot. That sounds very poor, surely anyone who sells...

I'm looking to add a stove to a self build but never had one before so have a couple of questions. the room is 6 x 4m so looking at a 5Kw for room heating only and will be vented via twin wall flue up through the first floor and via the loft roof. Outside air intake will also be added. It's not...

I've only had the environmental search results back from conveyancing which it picked up on surface water. I was aware anyway as I viewed the land. I've not paid for anything extra though. The site is in woodland which needs cleared to build, there are other houses that have been built with...

I'm looking for some information on methods of routing streams through land that's going to be built on. When I say stream, it's more of a trough of water 50m long but doesn't flow much in a woodland. I'm looking to build on a plot of land that has a beck/stream running down one side of the...