What Do I Do If We Are Fed Up Of Hearing The Boat Engine In Operation? Can We Insulate This? 

For sure, you are looking for a marine insulation product like ButylMAT for the engine bay area. It is tear proof, resilient to chemicals, UV stable and manufactured in the UK.  It is cost competitive with other products on the marketplace which are far less waterproof and do not have the temperature stability of this high quality marine insulation product.
At only 1.7mm thick how can it achieve such a reduction is sound you may ask? It is specially designed with an aluminium outer casing and UV stable barrier reflecting both heat and noise back to source, along with the 3Kg mass per metre squared it is a boat insulation to be enviable of.  Enough writing...... Please find enclosed some pictures of the product:



That Is Great But How Do I Fit This Acoustic Insulation To My Boat Engine Compartment?

It depends on the substrate you are bonding the ButylMAT marine insulation product to. As long as the substrate is dry and clean we haven't had a problem before, however if it is GRP it maybe of use to use PVA adhesive as a primer to ensure a smooth surface for bonding. 

Once I Fit It What Can I Expect, Should I Use A Lot? 

Coverage is key with a marine acoustic barrier product. It will stop noise penetrating through light substrates used to manufacture boats.  Once fitted it will offer you comfort in your boating experience, enhancing the insulation properties of your boat, potentially making it more saleable in the future.  You can combine ButylMAT boat sound engine bay sound insulation with our 3M TC1803 marine insulation which absorbs reverberant sound.  It is hydrophobic and has a similar temperature performance.  Here is a photo:



It is self adhesive for ease of fitment.