rafters

  1. R

    Advice - add PIR insulation between rafters inside kitchen and plywood over the top

    Hi All, We have a kitchen which is absolutely freezing in the winter, because there is no insulation in the roof. Please see attached picture, we have rafters which are 42mm deep, with plywood, a membrane and the on slate on top of those rafters (no insulation). I would like to buy 40mm PIR...
  2. O

    Rafters on ridge beam

    Hi all, I saw this image online and I’m just curious to see if this is structurally a good method to join rafters on top of a ridge beam. In the photo you can see the rafters are beside each other and nailed rather than flush cut and butted up against each other and nailed. To me it has to...
  3. paulharmer

    Moving collar/rafter ties

    Hi all, I'm looking for some advice on moving some beam in my loft to make the space a little more useable. It lends itself to a loft conversion but is cost prohibitive at present. It's a 1930s roof which we are having replaced due to leaks and dust. The loft has beams across every rafter 4.5m...
  4. Matthew Bester

    Metal Stud Wall & Parallel Rafters

    I wish to build a metal stud wall to partition my loft, there is a loadbearing brick wall I can build upon BUT if built there the ceiling runner ends up centered parallel with the rafters and have nothing to attach to. The best I have come up with is adding some noggins (in red) 600mm apart...
  5. S

    wet roof membrane

    Hello, I'm putting some new rafters into an edwardian butterfly roof, on the advice of a structural engineer, and when it rains there appears to be large water marks forming on the membrane. No water is getting through, but in the darkest spots, around the valley, it's starting to feel slightly...
  6. R

    Wet Rafters

    Hi all, I'm looking for some opinions on the cause of some wet rafters in the attic. The rafters to the rear (north facing) elevation are all wet on top and down the sides. The rafters on the front (south facing) elevation look to be okay. I'm trying to work out if the likely cause is a roof...
  7. Acejames87

    Water penetration - Chimney Cracked Render - Rafter too close (ed.)

    I have a small amount of water coming through what looks like a crack in the render on the corner of my chimney inside my loft. My thoughts are to chisel away existing render in area and rerender. The problem the roof rafter that goes up is right against the chimney stack. Any suggestions how...
  8. D

    Roof rafters for dormer conversion.

    Hi all, just looking for help with my dormer conversation. I’m installing new roof rafters 150x50 and sitting these on the load bearing eaves to which the original rafters from this to the wall plate are to remain but I have a couple of problems. -replacing the whole rafter will make the roof...
  9. O

    Rafters in Ridge Steel beam help

    Hi, I'm having a vaulted ceiling and a Ridge Steel has been fitted. Internally, I want a triangular ceiling. I was wondering how the rafters should be fitted on the steel. I've attached an image with two options. 1. where the rafter fits into web of steel with noggins 2. add a bolted timber...
  10. O

    Rafters meeting flat roof section, how to fix.

    Hi, I'm constructing a roof for a single storey extension. The roof is composed of two parts, one gable (vaulted ceiling) and one flat roof. I've attached image. I'm under the understanding that usually rafters from an inclined section are connected by a birdsmouth, but internally this will...
  11. N

    Flat roof insulation advice

    Hi :) I have just bought a house in need of much renovation! One room is flat roof and I am unsure if I need to add any insulation between the rafters or if there is a layer of inuslation above the boards and the space between the rafters is for air flow. Any advice welcome :) Thanks
  12. D

    How far can 5x2 span?

    Hi there. First time post - nice to meet you! I'm planning a self build timber frame garden room with a flat roof that has an internal span of 3.3m. From the span tables I've seen, 6x2 on 400mm centres would be best - based on minimal loads as doing a cold roof and wont be up there often and...
  13. S

    advice on replacing roof rafters following historical woodworm

    Hi I purchased a 1600's house a few months back which has historical woodworm (obviously) but following 2 independent assessments, no sign of new infestation. However - having had a *really* good look around the loft, probably 10% of the rafters have been well chewed through and I suspect need...
  14. R

    Loft: Random plasterboard between rafters - why?

    I have come across some random plasterboard in-between a few of our loft rafters. The previous owners had a two-storey extension built 10 years ago with some new roofing that joined onto the existing roof. There is some overlap between new roof felt (beathable) and the old existing felt (the...
  15. O

    Positioning flat roof rafters

    Hi, I'm installing a flat roof on a single storey extension. I'm installing the first rafter and unsure how far it should be from the adjacent wall that runs parallel. Is there a set distance or does butt up to the internal wall ? I will be adding insulation in between the rafters so not sure if...
  16. D

    Polystyrene tiles between rafters

    I probably already know the answer to this question but I will ask it anyway. We had all the roof tiles replaced about five years ago and afterwards I renewed the loft insulation and boarded the loft. I also fitted 2" thick polystyrene between the rafters, the polystyrene being cut into tiles...
  17. DIYNoobDude

    Can I screw into lower end of rafters?

    Hey everyone, I'm new to this stuff so thanks for all your help guys! :) Sorry for the long post! Summary: Trying to fit curtains onto a bay window but there is no wall to screw into above, only rafters. Detail: There is no wall or lintel above my bay window. Basically, it's a normal pitched...
  18. L

    Insulating a sloped roof on 1st floor - sanity checking

    Hey everybody, ~1950's two storey hip roofed house, with part of the roof extending down through the 1st [UK] floor: The original rafters are suprisingly small (45 x 70mm), despite some of them going nearly 8m to the apex. The main hip section of the house has been insulated for a while, but...
  19. M

    Securing eaves plate to brick wall

    I’m in the process of building a lean-to on the back of the house and wondering if anyone has any alternative methods of securing the Eaves plate two two separate brick walls? I would normally use wall straps, but I’d sooner not see the metal work, as I’ll be keeping the walls brick. Each...
  20. SS-ProjectBuild

    PIR Insulation between rafters - Cold Roof

    Hi Guys, I am about to put in my insulation between the rafters after my electrics first fix, The question being do I put the insulation in so they are flush to the bottom of the rafters or can I put them above my wiring as long as I leave my 50mm air ventilation gap? There will be 50mm pir...
Back
Top