ianfish

Basically it was a conversation between the PO and our Architect or rather our Architect after two postponements suggested it as a way forward The PO was just not helpful and had about as much charisma as a five year old, lacking in clear communication ( we had I believe four communications ) with him over six months every time at the end of the period he had given, for me it lacked respect and any real meaningful consultation, we can give him all our ideas and he came back with pitiful negatives.....

YEP, as a condition from the local PO Nice of him to throw it into the mix dont you think?

Mate! don't worry over others interpretations! I have worryingly just been reading up very much googleastheexpert.... A screw pile should be around 8' to 10' from each other with most starting at corners and distributing them across the area that's needed. I am not an SE or anything else along those lines but like most here keen to understand and be involved in all aspects of my build! The last ten days have seen me reviewing virtually 80% of our costings after a seven month hiatus courtesy of our PO as is this interest of mine in screw piles. We are needing them too! for a 5.5m 7.5m Summer house at the extreme end of our garden. Every set of specs and quotes I have had so far ALL differ in some way or other, which for me has had a peripatetic feel to the project design and setting of brief As a side note from undertaking this review I have sought material savings of about 3.5k on a 35k materials budget. Ian

Odd isn't it? I submitted a few quotes before bed one night a few replied with quotes first thing ask for a revision and then silence....I just don't get it

That's another issue! terminology used between materials and manufacturers hardly any consistency! which for me as trying to do as much as I can myself with help...just sets me back. Without hijacking this thread, We are going to use ISOTEX for our walls. On Seeking out other input a local builder/architect/surveyor comes over disses what we had put together and then dismissed isotex as "new s*it" and on asking any questions of what materials he used he just got more base in well that's how I do it...oddly enough he did use forms of ICF but did not consider them as such. I found an EPS 200 which is about a 1/3 or more cheaper than EPS 300 which could see a saving and still supposedly do more than a job for me...

Go to be honest here. I am struggling with reading up on so many materials, some things people seem to do the minimum specification and other areas they over spec? All the support documents seem to imply very similar uses, with the practical examples being either residential, public buildings or industrial. As an example Jablite Floor Insulation and Design Loads The Jablite Flooring Range is available in Grade 70, 100, 150, 200 and 250 grades. For a quick rule of thumb, the following guidance about use and design loads applies: Jabfloor 70 is used for standard domestic loads Jabfloor 100 is used in offices and schools. Jabfloor 150 – 250 is used in heavy commercial, industrial where heavy loads from storage racking or fork-lift trucks are expected I'm thinking the brand in this instance is the eps rating...

Yep I get that thanks, but practically in a domestic setting is there a reason to use eps300 over eps 200 or eps70? or any other of the many ratings or values?

Does the EPS number make any or much difference? or is that strength? Looking for the last few days at all the various EPS materials they differ in cost, amount. Have not found a graphite eps 300 block yet they seem to be eps70

We had one quote for an eps raft 45m2 all in at 27,000GBP or 3.7K for the EPS alone Thinking a certain now not employed sales person was taking the *iss a tad

its in the mix not 100% sold on it yet..

https://www.rockwool.co.uk/product-overview/flat-roof-solutions/hardrock-multi-fix-dd-tapered-en-gb/?selectedCat=downloads

Will digest this later thanks

I meant how the board is manufactured over using as a foam!

https://www.xtratherm.com/ Not saying you cant! Anout firrings but im thinking if that can be added into a product its one thing less to do.

The creamy insulation board is a blown pumped foam in its liquid state. Not an official name but thats what I meant I have looked at a few products with the fall built into them rather than having to cut firrings and having another layer to secure and attach, the less I have to attach I feel can only be a better end job. There are a few insulation products with built in fall. I have come across a rockwool product and a sheet manufacturer in Chesterfield which I have not recorded the full website for!

We had some good news this week, our planning which was submitted late Summer 20 has finally been granted!! I have gone over many elements of the build time and time again. I have done many elements of a build over the years but this will be the most comprehensive. We are adding a kitchen - dinner - living area to the back of the house, our initial design had to revised for the planning officer. The main part of the extension has a flat with fall roof. My thoughts have been for a warm roof going inside out 3mm Plaster 12.5mm Plaster Board i Joist (sent for quotes waiting firm details) thoughts are 600mm centres Trying also to get a comparison between metal frame and wood I beams 18 mm OSB Vapour Barrier Insulation 18mm OSB EDPM My thoughts having read a few places about insulation is to go for as much as is practical with a combination of a rockwool layer and a foam the foam I hope would have the fall in it negating the need for firrings. hoping for a U value of .10. I am hoping the mix will also go toward the warmest best sound proof I can realistically achieve, without going totally passive. I would be interested to hear to be from people about which VB they have used and why? there seem to be the so many onet the mark but I am getting a bit bogged down in trying to make any reasonable comparison. I get its purpose but is there any merit in using any particular . Again OSB wise a lot of illustrations show OSB on both inner and outer layers as it were, Then I went to SIP panels which do not seem to have a VP? am I missing something? They also all seem to come with a thinner layer of PLY/OSB. I understand the strength is not too involved in a material thickness but I can see the merits of using 18mm as it can be screwed well and glued. My thoughts on securing stuff would also be a mix of foam and screw to the appropriate length to get into the joist lower deck. Looking to start late March so a roof would be May June plenty of time to worry and overthink stuff. Ian

007....

Thanks for your crucial input! Im the OP your input over the thread was and remains confused. please do leave it there.... thanks again

Acronym's eh how, who do you apply to....

applied via the BC...its been granted.

It was a very loose @iss take by a chancer... One survey can cost 350 ish. The advisor wasnt very good at advising. Oddly we never heard from him again. despite his he had a mate who could sort it for us asap....

a little bit of over egging a project it seems... the advisor who suggested 8 no longer works for the parent company ...make of that what you will

It was granted as in the drawing..

The wrapround elenent already exists and was completed by the previous owners...kink in wall included which mirrors the boundary of the property