Sound insulation sheet

[morgandlm]

I have today removed the damp, oil soaked foam lining the engine space on my Sadler 26. I plan to clean up the newly exposed surfaces and fit some appropriate soundproofing sheet. Can anybody out there share their experience of which product to go for and any tips for fitting. The engine is staying in so space is tight.
Thanks
Morgan

 

[pvb]

Halyard...

Halyard make some good sound insulation - there's a lot of info, and fitting tips, on their website. It's quite a difficult job with the engine in place, though.

 

[Elza_Skip]

Hi,

Yes, I use Halyard after first using aonther unknown make. the Halyard was much better.

The difficult part is cleaning the remains of the old one away. I tried all sorts of solvents to remove the glue, nothing really worked well. I was told on the Halyard stand at LIBS to use a flat paint scraper that you heat with a hot air gun (but not too hot) to remove the glue layer. If you use too much heat it gives off fumes.

One draw back with the Halyard panels is the best ones have a heavy polymer sheet in the middle of the foam as a sound barrier. This can make it difficult for them to follow a curve, so depending on your installation you may need some simple foam sound insulation from the Halyard range. i finished off the job with aluminium repair tape from B&Q to seal the exposed areas and cut outs etc.

 

[webcraft]

[ QUOTE ]
I was told on the Halyard stand at LIBS to use a flat paint scraper that you heat with a hot air gun (but not too hot) to remove the glue layer.

[/ QUOTE ] Is there such a thing,and if so where do you get it?

- Nick

 

[ninnes]

Redid my S26 engine bay this year. Used Quietlife panels from ASAP (http://www.asap-supplies.com). They contain a lead lining and they have many thicknesses. I used Slimslab 23mm as wanted as much space around engine as poss. I gather self adhesive versions arn't very, so stuck mine on with PVA glue which is holding fine. Used old foam as template. One box of 4 sheets did it but not underside of cockpit floor. Noise much better but still need to seal all those minute cracks that seem to let so much sound through.

 

[alahol2]

I intend to insulate my engine bay this winter. Does the team think PVA glue will hold a horizontal panel under the cockpit sole or will I need some cross battening to hold it up?

 

[Graham_Wright]

[ QUOTE ]
One draw back with the Halyard panels is the best ones have a heavy polymer sheet in the middle of the foam as a sound barrier. This can make it difficult for them to follow a curve, so depending on your installation you may need some simple foam sound insulation from the Halyard range.

[/ QUOTE ]

Yes;- BUT! The heavy polymer sheet is the important bit. Withough this (or lead), the sound insulation effectiveness will be greatly redued.

 

[Gordonmc]

So far no-one has suggested Thinsulate which was my preferred option. It seems far more flexible than semi-rigid panels and the cost looks about the same.
The adhesive is water-based, so as I understand it surface prep. is reduced and there are fewer worries about fumes.

 

[PCUK]

Don't forget the hatch seal tape around all the opening panel joints.

 

[Forbsie]

I used a huge can of Evostik impact adhesive for my 1/2" thich heavy panels and it has survived very well.

Better than the boat itself, unfortunately. /forums/images/graemlins/frown.gif

 

[John_d_Smith]

I tried various adhesives to attach sound insulation to the underside of floor panels and eventually cut some disks of foamex plasic with a hole saw and used these to screw through. I suppose thin ply wood would work too