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About Moonshine

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  1. Yes, particularly in timber frame, which basically doesn't have the same mass per unit area as masonry that is effective at insulating against low frequency. It is also really dependent on the detailing of the design, and workmanship. Sound insulation of timber framing can be a complex matter that i won't go into in a MVHR thread. @PeterW a solid sealed core door won't so much 'transmit' the sound, but impinge its transmission more than a hollow core door. FD30 fire doors, which are solid core with seals at the jambs but not the threshold (small gap, though if a true fire door / smoke requirement couldn't have the gap) will probably achieve Rw 25 dB, and if a threshold seal around Rw 30 dB. Lorient have a very good database of how there acoustic seals perform based on different door / blank manufacturers. Building regs for entry doors in Rw 29 dB, so i can't really see what would have the need for internal door sets of >=Rw 25 dB, @Sjk what is your sound insulation needed for, kids play room, music room, adult dungeon?
  2. A sealed solid core door, with a threshold seal will provide good sound insulation, but the same without the threshold seal wont be that much of a degregation acoustically, but probably will give enough of a gap for air ventilation.
  3. Sealed doors in internal room? What's the issue?
  4. Looks nice, and massive floor area. No real comment, but i would scrub your boys name (and maybe boy's bathroom) from the drawings, just call Bed 1 and Bed 2 for data protection as these drawings and names will be on public display (like now).
  5. Moonshine

    Heat and sound insulation

    When you come to select plasterboard the surface mass of a selection of types are in the post below
  6. Moonshine

    Heat and sound insulation

    If you are doing a external wall with two 100mm block, and 100mm cavity noise intrusion won't be an issue, however other facade elements such as glazing and vents are the potential issue. Oh they do, and they do sell. So many use timber framing, e.g. Persimmon do loads of timber frame, so much so they brought a timber frame company, Space 4.
  7. Moonshine

    Heat and sound insulation

    Are you looking at internal walls and floors rather than external facade elements? If you are looking at internal spaces, building regs require a minimum sound insulation of Rw 40 dB. This can easily be achieved with standard plasterboard on timber studs with a bit of mineral in the cavity. Or if you are going masonry a 100mm block will do it. If you want to increase over the minimum Rw requirements with timber then look to use additional layers of denser plasterboard (or even resilient bars), or with masonry use denser block.
  8. Moonshine

    Heat and sound insulation

    I wouldn't quite say timber is hopeless, relative to masonry, correctly designed and built it can perform as well as masonry overall (Rw), however where masonry comes into its own is low frequency resistance as it's got significantly more mass to it. If you compare the low frequency range sound insulation measure (Ctr) masonry is so much better.
  9. Moonshine

    New Build mid Devon

    Nice location and good plot size. I can see what you mean about the old windows (i was being nosy as i am in the Devon area, and came across the old plot sale particulars), glad you were able to get those windows changed, especially for the views in that area!
  10. Moonshine

    Plasterboard or Aquaboard?

    yep, 12mm cement board, have a look at the info for another cement board product
  11. Moonshine

    Plasterboard or Aquaboard?

    Why not use some thing like Aquadry Backer Board instead of plasterboard, to save having to tank?
  12. Moonshine

    Do I lag all my pipes?

    My common sense would be to only lag pipes (hot and cold) in unheated spaces.
  13. Moonshine

    Resonating plasterboard wall - buzzing plumbing

    Yes it is, and can cause noise issues, I was involved with a project where noise from high pressure pumps were causing issues due to pump pressure pulsations propagating along long runs of hydraulic pipe work that ran through noise sensitive areas. Water is a pretty incompressible fluid and energy transfer though this medium is efficient. What the circulating pump is doing, is every time there is a fluid compression from the pump it gets sent down the fluid in the pipe. Say the pump has a operation speed of 1200 RPM (20 Hz) and 6 pumping element (lobes / vanes), it will create a 120 Hz pressure pulsation down the pipe and make the pipe and anything that its fixed to vibrate and create noise. In your ASHP, it seems that the circulating pump and system is creating large pressure pulses. So how to stop it? Try another circulating pump that creates a reduced magnitude of pressure pulses, as @ProDave seems to have found. Fit a hydraulic noise suppressor / pulsation dampener (though I doubt there there are any specific for ASHP's, as one looked at were in the 3000psi range) Make sure that the pipe work is not touching building elements, especially if they are lightweight (e.g. plasterboard). Use resilient pipe mounts. if sound is still propagating from the pipe, lag with a product such as Soundlag 4525C.
  14. I am looking to put a en-suite in an existing bedroom in a pitched roof. The en-suite is based on a 1200 x 900 shower tray with cut corner to minimise the intrusion into the bedroom, with the door opening inwards to the shower. Below is a sketch of the space as i see it working, with the ceiling heights marked on in the key areas, i think that the heights are o.k (they may come down by 50mm for more insulation in roof void). I am not too sure about the clearance above the toilet, any thoughts or guidance on minimum heights, and laying out a en-suite in a eave?