roof

  1. wilco88

    Is this a leak or condensation

    Hi, This is a small flat roof that joins to the house and main pitched roof. Some background info: It has never had any insulation between rafters and doesn't have insulation on top. Timber roof joists/rafters with timber furring. Then plywood and then torch on felt. We discovered the...
  2. L

    Insulating loft

    Hi everyone, our three bed Edwardian is very cold. The upstairs heats with heating but then gets cold quickly once turned off, whilst the downstairs gets warmer (only to about 16 / 17 degrees Celsius currently) and then dips. looking to insulate. We have cavity walls but will not insulate here...
  3. P

    Advice needed on loft insulation and boarding please!

    Post closed
  4. SS-ProjectBuild

    Correct nails for Timbers

    Hi, I will be framing my flat roof using 9 x 3 timbers.... what size/type of nails do i use to brin git all together (noggings/overlaps/framing etc) ? Thanks.
  5. J

    Re Slate - Issues

    Hi - this is my first post here and I was hoping someone could advise. I have recently moved into a 3 bed semi detached dating from the 1930's, the house is slated in good quality Welsh slates but had no 'breathable' membrane. We have just had the slates removed, a membrane fitted...
  6. Buenaventura Durruti

    Want to insulate under rafters with Multifoil - no membrane under tiles...

    Hi all, I have recently bought a house (1920s/30s) and want to insulate my loft. Currently there is about 100mm of fiberglass between the joists and floored with chipboard. I really need the loft for storage so rather than add extra glass wool I want to use multifoil under the rafters - it looks...
  7. S

    Is our roof safe

    We have been living in our house 16 odd years and of late have noticed that we have small walls in the loft that hold up wooden beams that act as some sort of roof support. I think they're called purlins from reading online. Our house is semi detached and there is a single purlin on the left...
  8. A

    Slate roof gutter between neighbours

    Got a quote for my roof to be refelted with breathable felt, new battens and the original slates reattached with recon slates where needed. Needed as no ventilation to the roof space and numerous slates have slipped. My slates are a completly different size to the neighbours and the tie in is...
  9. U

    EPDM Flat roof slope(s)

    Hi. Please be patient with me as this is my first big build! I'm an Engineer by trade though so reasonably confident once I understand the basics. I'm planning a large garden workshop and would like to flat roof it with Classicbond EPDM. The actual structure will be 6x4m in Thermalite blocks...
  10. O

    Roof height for rear extension on sloping ground

    Hi All, I'm planning a single storey rear extension on my 1930s terraced house - 4.5m deep, full width of the house - 6m. The house is on naturally sloping land, higher at the front. At the back of the house, there is a 0.7m drop to the patio and then a 0.4m drop to the original ground level...
  11. SS-ProjectBuild

    Flat Roof - Joist Sizes help [Diagram]

    Hi Guys, Looking at the attached plan... with the joists running left to right.... which joist size would be suitable: 1) 8x2 2) 8x3 3) 9x3 The internal walls are solid block and load bearing
  12. SS-ProjectBuild

    Flat Roof / Joist layout

    Hi guys, Would anyone be able to suggest the best way to frame this flat roof (cold roof because of height restrictions)? Will be using C24 9” x 3" and all the internal walls are solid block load bearing. I was thinking about creating a 2 way fall to each side with firring strips. OSB and then...
  13. S

    Retrofitting membrane and insulation into old roof

    Hi All, Apologies if this is roof construction 101. I recently bought an old house and the garage has zero roof insulation. The roof consists of the timber frames, battens, nails & tiles. I would like to add a membrane and insulation without dismantling or redoing any of the existing roof...
  14. M

    Neighbours Dormer question and my roof on Victorian Semi

    Hello My neighbour has almost finished their L Shaped Dormer and the Builders/Roofers have damaged my roof etc and have now after a lot of chasing they are working to make repairs (they were standing on my roof to complete the Dormer - i consented to this under the understanding that they repair...
  15. J

    Dry hips

    Just had some dry hips installed, but there’s no membrane underneath. The unions are screwed directly into the batten underneath. Quite large gaps under the hip tiles. Should I be worried?
  16. R

    Repair or replace concrete garage roof beams

    Looking at renovating my garage in the near future, however I've no idea how serious the cracking in some of the concrete roof beams are. It's an old concrete sectional garage (no idea how old), and some of the beams have crumbled to the point which the rods are exposed and rusting. I've not...
  17. J

    Neighbour gutter overhangs over our property

    We are planning to build a conservatory extension adjacent to the neighbour's wall. We have some concerns about the way in which the waste pipe from the neighbours' first floor bathroom connects with ours into a shared pipe on our property, as well as how their extension has a rainwater pipe...
  18. M

    Cracked roof felt

    Another one from the "I'm an idiot" files: I bought a tiny shed/garden store with a little felt roof. The instructions said to fold the roof felt over the edges of the roof panel and nail down on the underside, with no specific instructions on how to do the corners. So I tried to use my sewing...
  19. M

    Gap Between Garage Roof & Wall

    Hello, Hopefully a straightforward question (and hopefully I'm posting this in the right place), I have little to no DIY skills, but I'm working on it! We have an old Garage/Outbuilding that has been in a state of disrepair since long before we bought the house. We finally have a bit of time...
  20. G

    Please help bad GRP which has cost £7000!!

    Hi, I’m looking for advice. We have had a terrible GRP roof done on a kitchen extension. There are holes, rips, parts which have no coating. You can see all the matting. The company have admitted the faults. They claim they will fix them but I don’t want them to just patch it up! Has anyone...
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