THE PBO SOLUTION

Modern domestic insulation materials are both effective and fire retardant, the latter being a key consideration afloat. As a result, products from DIY outlets will prove perfectly adequate for a ‘superfy your yacht’ project.

Screwfix, for example, sell the YBS Superquilt product, which will give you a 5m x 1m sheet, for around £60. Specialist companies such as Hawke House Marine can also supply self-adhesive foam-backed insulation in various thicknesses (either 2mm or 6mm) which can be bonded directly to the inside of the hull.

If your boat is prone to getting a little damp, an option is to use immersion heater jackets, or to wrap the Rockwool in plastic before installing it.

Domestic UK suppliers such as pipelagging.com

(an Armaflex distributor) or low-E.com can deliver a wide range of insulation materials.

If you want to use marine-compatible spray foam on a steel hull, then check out Websters Insulation Ltd or Mass Foam Systems UK. They also have a lot of technical advice on their websites.

Marine insulation specialists can spray expanding foam strategically into overhead and under-deck voids for cost-effective and long-term insulation

Thinsulate, a 3M product widely used in gloves and ski suits, is hydrophobic (resists water) and is easy to cram into vertical and horizontal voids. Here it being applied to a canal boat