Re: Re: Hot knife for HA conduit ...

[Chris Hunter <cjhunter@xxxxxxxxxxxx>]

aye ... thanks ... a big difficulty has been that people seem not to
understand what matters & have no feel for it ... still, we'll get
there ... it won't be perfect, but it'll be a whole lot better than
it might have been (if we ever finish, that is) ...

Chris


On 20 Sep 2007, at 09:18, Mike Griffiths wrote:

> All I can say Chris is Good Luck
> The last Outside Broadcast truck I was involved in building was
> built at
> the same time the BBC were building one of their trucks
> They were trying to get good Acoustics - our truck was finished well
> before theirs so I never heard the end result but I KNOW the
> Ceiling of
> the Beeb truck cost more than our total build cost for the same size
> unit!
> And most acoustically isolating floated-floors I've heard Squeak!
> Mike
>
> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> Of Chris Hunter
> Sent: Wed 19 September 2007 23:22
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Re: Hot knife for HA conduit ...
>
> 'good question !   Indeed, we might use Fermacell, it's what we
> intended, also for the ceilings (double layer, with foam between) but
> if we do it would have to be bonded to the polystyrene (the
> recommended way, as it happens, but necessary, in any case, for good
> acoustics) ... not sure how we would fix timber or metal framing,
> without short-circuiting our acoustically isolating floated-floors,
> but using it in any case would give us skinned hollow voids which,
> even with heavy & fibrous Fermacell, would tend to drum, which we
are
> more than keen to avoid ... the house where we are now has routine
> dot & dab plasterboard, and the acoustics are terrible (ie: every
> small noise comes right back at you, is exaggerated, and puts us on
> edge, plus playing the hi-fi at anything like optimum volumes results
> in awfully - for want of a better word - flabby sound) ...
>
> getting the acoustics right has been a big thing for us ... ie: 'has
> involved a lot of trouble, not only in terms of structure, but also
> in terms of drains & ventilation pipes, plumbing, conduits, etc
...
> trouble is, small details have big effects on the final result ...
> small holes & gaps can let sound through very disproportionally,
and
> panels can cause bad reverberations ... we're aiming for both a
> neutral acoustic & good isolation between rooms ... so things
don't
> have to be loud, and even if they are they don't have to be louder or
> annoying people in the next room / outside ...
>
> that's how it is for us, anyway ... and it's part of the reason our
> HA installation is behind schedule (we're working on it now, and it's
> a lot of work, needs a lot of care & attention detail, and makes
> selecting technologies & suppliers for things like heating systems
&
> floors, as well as walls, very far from simple ... !!
>
> Chris
>
>
> On 19 Sep 2007, at 22:47, Ian Lowe wrote:
>
>> As a general question, why cut the conduit into the ICF at all?
>>
>> would it not be better to use a metal or timber framing inside the
>> ICF,
>> then skin it with Fermacell?
>>
>> so you get the best of both worlds - super insulation from your
ICF,
>> incredibly tough, smooth walls from the fermacell, and accessible
>> voids
>> for cabling with the framing?
>
>
>
>
>
>
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