Oscar Iso-Mount - Type1

Soundproof ceiling

NBS Plus RIBA Product Selector NBS BIM RIBA CPD Providers Network

The ultimate soundproof ceiling system that exceeds Building Regs Part E & achieved up to a 90 minute fire rating

DIY  •  Builder  •  Local Oscar installer

Buy Oscar Iso-Mount Type1 online

Space saving isolating acoustic hanger for soundproof ceilings

Sound passes through ceilings and floors as vibrations and sound pressure waves generated by footsteps, music or voices in an upper flat.  These penetrate and travel through floorboards, joists and ceilings in the form of vibration and noise.  By creating an isolated, floating ceiling using our Oscar Iso-Mount acoustic hangers you will stop the vibration that causes the transfer of unwanted noise from flat to flat.

Our Iso-Mount Type1 screws to the side of the timber joists which allows the absolute minimum of ceiling height loss: just a few millimetres (1/4 inch) to allow the Gypsum ceiling boards not to be in direct contact with the joists.

Typical Iso-Mount applications

House conversion to flats, new build and renovation of houses and flats.  Shops, restaurants and other commercial soundproofing applications.

View full Iso-Mount Type1 installation guide

View full BRE fire test report

Key benefits of the Oscar Iso-Mount Type1 soundproof ceiling system

Oscar Iso-Mount - Soundproofing ceiling system - Type 1
  • The minimum of ceiling height is lost: as little as 6mm (less than 1/4 inch).
  • Class leading acoustic performance achieving (better than), compliance with British building regs Approved Document E for airborne & impact sound.
  • Height adjustable, allowing for flat ceilings across uneven joists.
  • All work is done from room below; no work is required to the floor above
  • Uses a widely available standard clip-on steel channel.  Saves you money when you purchase steel channel direct from manufacturers for as little as £0.88 per metre.
  • Easier and quicker than installing products on the floor of the room above.
  • Appears no different to a standard plastered ceiling once completed.
  • Fast and simple clip together installation.

Oscar Iso-Mount soundproof ceiling testimonials

"Ceiling is complete...

I've tested it by powering up a loud DeWalt router in the garage and seeing how loud it is in the room above.

WOW.  Can hardly hear it...It really was much quieter than I thought it would be.  I can finally use the workshop in the evening when the kids are asleep in the room above.  I'll admit not having done it before I was unsure if it would deaden the noise enough for power tools...but I am blown away by how well it works.

Thanks again for your help - much appreciated."

James Burrows
Home DIY installer
5 star review rating

"Once again thank you for your prompt response with processing our order for the additional Iso-Mounts.  The owners took us by surprise when they asked for the additional area to be done, but they have been so impressed with the results of all the acoustic ceilings that they felt they just had to have it done."

Derrick Murphy
D&M Murphy Plastering Contractors
5 star review rating

“The whole transaction has been simple and easy. I fitted the ceiling this weekend and it’s made an instant difference. So much so, that I had to ask the owner of the flat above if he had been using the room above. I will recommend the product to my friends and will use it on other ceilings in my flat. Keep up the good work!”

Jim Hood
Home DIY installer
5 star review rating

Oscar Online Shop

Buy Oscar Iso-Mount Type1 online

Delivery available throughout the UK.  For outside the UK please contact us for details.

We supply:

*The Oscar Iso-Mount soundproof ceiling range uses a widely available standard clip-on steel channel.  Oscar Acoustics do not stock steel channel so you can save money by purchasing required amount directly from manufacturers.  We found it online for as little as £0.88 per metre!

Other components are purchased from your local stockist.

The systems can be installed by a competent DIY person, builders and in many areas we can recommend installers.  

Enquire about your local Oscar approved installer OR Apply to become an Oscar approved installer


Oscar Iso-Mount - Type1 installations

Soundproofing Basement Ceilings | Oscar Acoustics

Soundproofing basement ceilings

Our Oscar Iso-Mount is the easy to install, space saving isolation hanger, ideal for soundproofing basement ceilings.  Lose only a few millimetres ceiling height with the ultimate high performance soundproofing ceiling system.

How to soundproof a ceiling

How to soundproof a ceiling

A full installation guide for our Oscar Iso-Mount system with video showing how to soundproof a ceiling with minimum height loss but highest performance.  By creating an isolated, floating ceiling using our Oscar Iso-Mount acoustic hangers you will stop the vibration that causes the transfer of unwanted noise from flat to flat.

Noise reduction ceilings | soundproofing for ceilings

Noise reduction ceilings

Why thousands of properties worldwide could benefit from using our space saving Oscar Iso-Mount noise reduction ceiling systems.  High performance isolated ceiling systems with as little as 6mm ceiling height loss.

Oscar Iso-Mount - Type1 technical specification

Fire testing

The Iso-Mount Type 1 achieves a 90 minute rating for fire resistance when using two layers of 15mm fireline plasterboard.  BRE fire test report available on request.

Acoustic testing results

Independent acoustic testing by MRL Acoustics Ltd (acoustic consultants).


Maximum loading of an Oscar Iso-Mount is 13.5kg.  Spaced evenly at 4 Iso-Mounts per square metre the maximum loading per square metre is 54kg.

Typical loading calculation for 220mm (8.66 inches), deep joists:

2x layers of 12mm plasterboard at 10kg each 20
220mm Celbar void fill at 40kg/cu.mtr 9
Metal ‘C’ stud at 1.2
4x Iso-Mounts at 37 grams each 0.0148
Total 31kg/sq. m
(6.35 lbs/sq.ft)

Plus:  The weight of downlighters, smoke sensors, grills etc. that are to be fixed in the plasterboard.  Consult the manufacturers of the plasterboard for fixtures to be fixed directly to the plasterboard.  Use fastenings as recommended by the manufacturer.

Note:  Celbar is an excellent thermal insulator.  Bring this to the attention of your qualified electrician who may have to allow for heavier duty cables and top hat downlight covers.  Covers are to be fitted in place following the Celbar installation.

Iso-Mount floating ceiling components

Further drawings



Important safety information

  • Only competent persons fully conversant with the use of personal protective equipment should carry out the floating ceiling installation.
  • Consult the manufacturers of the plaster board for fixtures to be fixed directly to the plasterboard. Use fastenings as recommended by the plasterboard manufacturer.
  • Celbar loose fill void insulation (as recommended), is also an excellent thermal insulator. Bring this to the attention of your qualified electrician who may have to allow for heavier cables.
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