Search results

  1. M

    Insulating first floor joists above garage

    Thank, appreciate your time. I'm in the reverse situation and attacking from beneath, just to confirm, was yours 300mm comoressed into the void then? Or did you have a 300mm void?
  2. M

    Insulating first floor joists above garage

    Yep, the stuff I've got is the ecosse but it still makes me itch when I use it. Was a B&Q 3 for 2 offer last time but probably quadrupled in price now.
  3. M

    Insulating first floor joists above garage

    Was hoping you'd show up Woody! So 100mm PIR tight to the floor above and then rockwool flush with the bottom of the joists in the garage? So shall I PIR what I can below (tight to the floor above?) And wool type the rest when I run out? I've got 195mm to play with. Any tips on getting the...
  4. M

    Insulating first floor joists above garage

    Interesting, our plans stated the wool type insulation between but we did our own plans and copied off another set. Not spoke to BCO about it but it may be worth a ring. So was that 300mm compressed into the void space? I'd have thought that the R value of pir would be well above the wool...
  5. M

    Insulating first floor joists above garage

    Yep sorted. Just need a confirmation that tight to the floor above is the way to go. Thanks.
  6. M

    Insulating first floor joists above garage

    Thanks for the reply. It's a new extension above the existing garage so new joists. One end of the joist is in a pocket in the wall and the other is on joist hangers between a steel (if that makes sense) would that make any difference? The ceiling will be double boarded following the...
  7. M

    Insulating first floor joists above garage

    Afternoon all, I'm at the stage of insulating between the floor joists above the garage to the bedroom above. I've got quite a lot of spare PIR board that I'd like to use for the area at the very front of the garage where it seems coldest. Does the celotex go tight up against the chipboard...
  8. M

    utility room stud wall detail.

    I'll give him a ring, better to do it now than have to take the wall apart afterwards. For the rear wall with the door and window I was thinking, screw battens to vertical dpc and then stud and insulate between with 75mm, and top with 25mm PIR to meet regs. Guessing I could make this into a...
  9. M

    utility room stud wall detail.

    Ok I'll leave the slip layer out. So my floating floor DMP will ride over the one course of bricks, back to original floor level and then continue up past the courses of blues. Thinking I can lay a piece of vertical dpc (400mm ish) around the outside wall perimeter and then the Dpm will lap...
  10. M

    utility room stud wall detail.

    Afternoon, from what I'm gathering the slip layer has to be 500 gauge polythene according to kingspans floating floor build up. With regards to the damp is there anything I can do about this? Or just lay the new bricks and ignore?
  11. M

    utility room stud wall detail.

    Afternoon, can anyone help me any further with this? Thanks.
  12. M

    utility room stud wall detail.

    Afternoon Woody, Just ordering the Dpm to make a start this week, Could do with your wisdom on the last post regarding the slip layer, tanking and boiler wall. Would the slip layer be the same material as the Dpm? Thanks
  13. M

    utility room stud wall detail.

    Yep will do, with mine being a floating floor I was thinking. thin layer of sand to level out floor Dpm 80mm PIR, taped T&G moisture resistant chipboard Hardie backer And tile finish. Would that make the dpc laid across the concrete in the illustration my slip layer? To go between the...
  14. M

    utility room stud wall detail.

    Ah, yeah I don't have access to that! The hard drive of knowledge! Just checked the timber, I've ordered CLS so it shouldn't be too big a gap behind anyway. Here's what I'm playing with, The damp is coming through below the dpc on the wall closest to the neighbors. My plan is to lay...
  15. M

    utility room stud wall detail.

    Morning Woody and thanks as always for the info. Is that from the nhbc website? I can never find the right illustrations. I've got a 115mm drop into the garage so have raised the floor one brick (not engineering though). Going to make a sort of bund for the floating floor to leave an air gap...
  16. M

    utility room stud wall detail.

    Morning, can anyone help with this. Keen to crack on. Thanks
  17. M

    utility room stud wall detail.

    Morning all, Have just started to prep for converting a 3m x 3m section of the garage into a utility room, So far I've laid a row of bricks to raise the floor level eventually and for the sole plate and Dpc to sit on for the stud wall. I can't find a clear illustration for the setup of the...
  18. M

    unsupported joists below extension

    Woody, any chance you could confirm if I should leave the rosemary in place? Just worried about it turning to dust one day. Thanks
  19. M

    unsupported joists below extension

    Thanks woody, Shall I just leave the rosemary tile in situe then and fill the rest of the void with semi dry mix? Just a little worried as this is considerably more load bearing than individual floor joists. Thanks
  20. M

    unsupported joists below extension

    Can anyone help with this? Thanks
Top