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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

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    • CommentAuthorbardo
    • CommentTimeMar 4th 2019
     
    Hello all,

    Recommendations please for double/triple glazed windows and doors, inc sliding type. Don't have a big budget. Looking for either hardwood or alu clad. Have had quote from Rationel and would like to know of anyone's experience with their product.

    Thanks:bigsmile:
    • CommentAuthortony
    • CommentTimeMar 4th 2019
     
    I love Internorm and would never move down from there, I have seen Velfac used and other European suppliers are worth a look.
  1.  
    +1 on Internorm but they are pricy. Worth paying for quality fabric in the places where you don't want to be replacing anytime soon in my opinion, but I realise it's not always that easy.

    If you're on a budget look at Progression windows from Green Building Store. I've seen mixed reviews but generally positive.
    • CommentAuthorandyman99
    • CommentTimeMar 4th 2019
     
    We have just used Rawington for alu clad windows. Mixture of double/triple glazed tilt/turn windows and a sliding door. They were very pleasant to deal with. Installation was with expanding tape outside and foam inside as default and they did a good job in my opinion. We compared prices with other "equivalent" window companies and they were quite competitive. Obviously cant comment on longevity, but I would recommend to date.
    •  
      CommentAuthorfostertom
    • CommentTimeMar 4th 2019
     
    Russell Timbertech or Munster Joinery.
  2.  
    I was happy with GBS windows (I used the Eco Plus range), but I do not know how they fare on price.
    • CommentAuthornick1c
    • CommentTimeMar 4th 2019
     
    I have Russelltimbertech atm. My experience of their customer service has been appalling. Their product (2g) seems good, but the hardware isn't suitable for anywhere near the sea.
    We are building a new house & have gone for Gaulhofer, 3G with external blinds on the s facing windows. They were a 5 figure sum less than Internorm, without blinds. I have seen some on a site & they looked great, but I will only be in a position to have a real opinion about them when we have lived with them, which will be some time....
    •  
      CommentAuthorfostertom
    • CommentTimeMar 5th 2019
     
    Posted By: nick1chardware isn't suitable for anywhere near the sea
    Interesting - what exactly?

    Agreed Russell cust service (incl getting the spec finalised, and flaky delivery reliability) is a pain. But pretty gd quality (in my experience) and seriously unbeatable price £350/m2 for the 4-12-4-12-4 3G 1.1Uw (i.e. next step down from PH grade) range, if you persevere.
    • CommentAuthorbardo
    • CommentTimeMar 5th 2019
     
    Anyone here used Rationel?
    •  
      CommentAuthordjh
    • CommentTimeMar 5th 2019
     
    Might be worth looking at Greensteps
    • CommentAuthornick1c
    • CommentTimeMar 5th 2019
     
    I specifically mentioned we were near the coast when asking for a quote. The shoot bolts have corroded to the point that they don't work,apparently the hardware doesn't have the correct rating. I have been trying to get it resolved since last August.
    When I was trying to sort it out on a temporary basis I discovered that non-stainless screws had been used in the oak frames, unsurprisingly they are rusted in.
    • CommentAuthorgravelld
    • CommentTimeMar 5th 2019
     
    Is this for a new build? MJ and RT don't do refurbs.

    Rationel are generally on the value end of alu-clad.

    Also Nordan, Norrsken, Ideal Combi.
    • CommentAuthorgoodevans
    • CommentTimeMar 6th 2019
     
    I've just had Munster install my windows and doors

    Overall not too bad.

    I went for their Aluclad passivehouse certified.

    I went through 5 quotes with munster before survey to ensure all the details are correct give yourself plenty of time.

    56m2 of windows and doors (inc 2 sandblasted front doors, 2 back doors, 2 french doors and 1 bifold door) £366 per m2 triple glased, pasive house certified, 0.7 Uw.

    Good points:
    Price was good first time without haggling (actually it was going to be supply only but they were scared I didn't have the builders for the job and they threw in the mechanical fixing (not foaming) for the original price (about 10 man-days worth).

    They appear to be tough windows - the installers were able to thump the mullions with a bit of timber protector and it didn't affect the aluminium at all.

    Door cills are 20mm thick (except bifold) and can sit at screed level and still be part M compliant).

    From survey to install was 3 and a half weeks.

    3 draft proof layers in the opening windows for good airtightness.

    The window cills are integral with the frame (not clip on) and very solid.

    large side hung windows supported - Triple glazed 1200 high by 900 wide.

    Nothing will rot.

    Not so good points:

    The number of finishes available is limited.

    The frames are chunky - aluminium outside - UPVC & foam structural core, wood clad inside. 120mm thick front to back and quite wide. (suggest minimise mullions and go for minimum number of large openings) - best for price as well.

    Door sills come in one width only.

    They will only supply to 'builders' under contact law not consumers under consumer law. However other than the contract being in my builders name I was able to deal with them directly.
    • CommentAuthorbardo
    • CommentTimeMar 6th 2019
     
    Posted By: gravelldIs this for a new build? MJ and RT don't do refurbs.

    Rationel are generally on the value end of alu-clad.

    Also Nordan, Norrsken, Ideal Combi.


    Yes, new build
    •  
      CommentAuthorfostertom
    • CommentTimeMar 7th 2019
     
    V gd info on Munster incl impressive £/m2 for PH - thanks.
    • CommentAuthorbardo
    • CommentTimeMar 7th 2019
     
    Posted By: FJWHi bardo,
    I found details a bit earlier on for Unilux alu clad rep in UK, might be worth getting a price to compare to Rationel.

    robbie.fraser@unilux.de
    07808 235325

    JW


    Hav you used Unilux Robbie?
    • CommentAuthorbardo
    • CommentTimeMar 7th 2019
     
    Posted By: gravelldIs this for a new build? MJ and RT don't do refurbs.

    Rationel are generally on the value end of alu-clad.

    Also Nordan, Norrsken, Ideal Combi.


    New build yes!
    • CommentAuthorgoodevans
    • CommentTimeMar 7th 2019 edited
     
    Posted By: fostertomV gd info on Munster incl impressive £/m2 for PH - thanks.
    And the good thing was I didn't need to haggle - I had one supplier quote over double for DG.

    Another tip - a Full glass door triple glazed from Munster is better insulated than a panelled door (and is a similar price - add approx £60 for a plain sandblast finish. The only issue I have to overcome is door security - the frame is so thick that spyholes are difficult to source. So a electronic door view/entry system may be required for regs.

    The glass front door looks proper posh, and in triple glazed feels proper posh also.

    Further price breakdown - £300/m2 for windows, £480/m2 for doors, £400/m2 for Bifolds (Triple glazed but not passivehouse).
    •  
      CommentAuthorfostertom
    • CommentTimeMar 7th 2019 edited
     
    Posted By: goodevans£300/m2 for windows
    For PH grade, is incredible.
    • CommentAuthorbardo
    • CommentTimeMar 7th 2019
     
    Posted By: goodevans
    Posted By: fostertomV gd info on Munster incl impressive £/m2 for PH - thanks.
    And the good thing was I didn't need to haggle - I had one supplier quote over double for DG.

    Another tip - a Full glass door triple glazed from Munster is better insulated than a panelled door (and is a similar price - add approx £60 for a plain sandblast finish. The only issue I have to overcome is door security - the frame is so thick that spyholes are difficult to source. So a electronic door view/entry system may be required for regs.

    The glass front door looks proper posh, and in triple glazed feels proper posh also.

    Further price breakdown - £300/m2 for windows, £480/m2 for doors, £400/m2 for Bifolds (Triple glazed but not passivehouse).


    Cheers, I will check out Munster.
    • CommentAuthorbardo
    • CommentTimeMar 7th 2019
     
    Thanks all, plenty for me to compare here. Cheers!
    • CommentAuthorTriassic
    • CommentTimeMar 8th 2019
     
    My window quotes are just in and i was wondering, When working out the price /m2, is this based on the overall window size or just the glass size?
    •  
      CommentAuthorfostertom
    • CommentTimeMar 8th 2019
     
    Overall window size is how a QS wd think of it
  3.  
    Posted By: fostertom
    Posted By: goodevans£300/m2 for windows
    For PH grade, is incredible.


    The people that consider price alone….
    With the exception of airtightness testing, ‘PH grade’ is determined solely by the inputs and outputs of an Excel spreadsheet and in saying that achieving an airtightness classification of Class 4 (EN 12207) for a small window is not that demanding.
    Equally so, achieving a (EN 12208) Class 9A (600 Pa) watertightness result should be straightforward for any modern casement window. Alas the MJ Passiv casement can only manage 450 pa and that for a surprisingly small opening sash of 900 wide by 1200 high. An educated guess would be that optimising the design to reach a target u-value has resulted in sub-optimal physical performance. Two seals on a storm sash profile may well provide pretty pictures in THERM but that outermost seal has a nasty habit of letting water in under pressure and not allowing it to drain out hence the pisspoor watertightness result.
    The BBA Agrement cert also notes that the system is only certified for mullions or transoms up to 1200mm long - and casements with a maximum width of 900mm. Why so small ? The sections in the Agrement cert indicate a lack of internal reinforcement in the PVC frame that is the core of this construction. Reinforcement has been replaced by PU foam because it performs better in a spreadsheet ?

    The EJMA profile also means that the window can’t be reversed making cleaning from within the building awkward at best for side-hung and not practical for top-hung windows.

    Beauty is in the eye of the beholder but it is difficult to describe this particular window as anything but fugly.
    It is essentially a PVC window with cosmetic aluminium and timber cladding. It has it’s place but I’m not sure that place is in a ‘green’ building.
    • CommentAuthorgoodevans
    • CommentTimeMar 11th 2019
     
    Monty, you may be correct, only time will tell - unfortunately I have had to work to a value for money system. I know and understand that I may have problems down the line - and I will report them here if/when they happen.

    The MJ windows have two small weep holes in the frame between the inner and outer seals at the bottom of the frame where there are opening sashes - so provided these are kept clear of muck, seepage through the outer seal should be able to drain - of course it would be better for the outer seals to stay watertight under all conditions. (and some manufactures solve this by having no outer seal and free movement of air and water to the inner seal)

    I also have my suspicions that the hinges on these MJ sashes may be at their design limit for the 3G windows so may need replacing more often than I would like.

    I would not call these windows elegant - fortunately I overruled my architect who wanted to standardise on 600mm spacing for mullions otherwise I would have had all mullion and no window.

    I didn't wish or need to exceed the limits of the frame/sashes as a 1200 high by 900 wide side hung window is large enough for my needs many of my windows are 1800 wide half opening half fixed - and, although not very easy to clean from the inside it is doable.

    I had put some trust in the fact that the windows I had selected are PH certified but I think you are saying that in your opinion PH certification is not rigorous enough for airtightess/watertightness (or MJ windows are not PH certified).

    Could you share some recommendations for window systems / manufacturers you do rate and why - too late for me unfortunately but others will find the information useful.

    I could have made other choices, spent more on the windows, less on the finish or less living space, but in the end it's all a compromise. I'm not building to PH standard - but I suspect I'll be towards the upper end of of greenness for new built houses of today. Providing these windows don't fall apart - or leak air / water I think they still deserve a place for green buildings.
    •  
      CommentAuthorfostertom
    • CommentTimeMar 11th 2019
     
    More v gd info on Munster - thanks again. Leaves only Russell standing, for me!
    • CommentAuthorgoodevans
    • CommentTimeMar 11th 2019
     
    If memory serves me right I think Russell had restrictions in the sizes of opening widows and that did restrict what I wanted - but I have no records about the conversation - I could be doing them a disservice.
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