Standard sound-proofed music practice studios
Just after completion on site. You can see the outer door is ajar and like everything else, it is treated with rubber and dense soundbloc boarding, as is the inner door and of course, both are solid. The windows are dark tinted to obscure the viewing of the soundproofing window shutters from outside when in use.
How this Soundproof Extra Room was constructed.
Case study of a sound proof extra room done to specification #1, the highest specification for max effectiveness. You may not need this level but it shows what lengths have to be gone to in order to achieve the maximum effect.
When a "room within a room" is to be built then there has to be acoustic insulation in each thickness or leaf of wall and roof panel which makes two thicknesses in two parallel walls and then a third fitting of insulation in the space between, 3 thicknesses in all. A lot of insulation is required and this is just for the mid range sound but this cures it as the other remedies for the high and low pitch also add to and inhibit it further.
For the bass and high pitches, a multi layer method utilising a second form of insulation and also rubber sheeting and strips, layers of special dense acoustic boards, is applied to all surfaces.
Insulation applied to the outside of the outer walls prior to membranes and claddings.
3K was spent on lining this building in special acoustic rubber alone.
Sound proof rooms, with their dense "soundbloc" linings, are too heavy to pre build like like we do our garden offices due to the incredible weight. 3 tons of extra dense plasterboard went into this building. A "room within a room" building such as this, has 8 walls and 2 ceilings and dense extra layers on the floor.
Above right you can see the sliders for the soundproof window shutters for the external wall, the internal walls have the same soundproof shutters fitted. Both the inner wall and outer wall doors are solid and are treated similarly so sound cannot escape.
Below shows walls before doorway is fitted with a solid rubber lined, double acoustic "sound lock" door to each leaf. Each wall has rubber strips on the studs and specialised rubber sheeting between the plasterboards, all to stamp out the "coupling"effect of sound transmission.
The blue plasterboard is special dense acoustic boards 2 layers with special rubber sheeting in between and also rubber strips on all the studding timbers prior to the first layer. (This refers to the inner wall only), similar is done to the outer walls, plus each have a further 75mm of dense acoustic rockwool insulation in them plus a further 75 mm in the space between each wall making 3 x75mm which deals nicely with inhibiting the mid-range sounds. The dense plasterboard and rubber further inhibits the bass and high pitches. Similar is done to the roof which has a double ceiling for the same reasons, likewise the floor.
Dense sliding window shutters, integral to both the inner and outer walls, each manufactured to the same specification as the walls themselves, slide over the window openings and combine with the acoustic glazing to make what is often a weak link, (the windows) into one of the strongest.
When all the above and more not mentioned, is taken into account, it is not surprising that this building was as near perfection as practically possible regarding sound inhibition.. Ten yards from it, whilst nearly 130 decibels was present inside, nothing could be heard outside at all .Nothing. A top spec room like this could be quite dangerous actually because if you locked yourself in, or a door lock jammed, and you could not slide the heavy window shutters aside to get out of the windows, then you will be trapped and nobody will hear you scream..
No one should go into one of these top specification sound proofed extra rooms rooms without a mobile phone, walkie talkie or landline phone or unless someone else has been informed as to your whereabouts.
Above left, the delighted customer and the Bob Marley poster is attached to the left of two inner sound proof acoustic shutters. Once slid away, another set of acoustic shutters is exposed for the outside walls, and only then, the triple acoustic glazing.
Picture on the right is a specially soundproofed singing room, further isolated and sound deadened in order for sound not to travel into the main recording studio, as well as to be acoustically insulated and sound deadened from outside noises.The singing practice room also has triple acoustic soundproof glazing between itself and the recording studio.
