See full version: Expanding Foam; The Alternative Method
In this video, we are shown an alternative method of creating insulation and emergency buoyancy below a deck. Using a hole saw and drill it is possible to fill areas with a 2 part expanding foam. It may seem painful to cut holes in a deck that has recently been fiberglassed: however, this method allows the closed cell foam to be added at any stage. This method will only provide buoyancy in an emergency if a boat is capsized, sinking and taking on water. [links]
Care should be taken when using a hole saw not to go through the underlying fibreglass and damage the hull of the boat. Notably, this video mentions the importance of drilling the holes nearer to the top of the slope so that the foam runs down and expands upwards towards the entry point. Always use closed cell foam when building or renovating boats other foam can take on water over time and therefore loses buoyancy.
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If the noisy pipe is accessible, such as overhead in a basement, observe where the pipe is clanging while a friend or family member turns the water faucet on and then off. Spraying some expanding foam around the pipe will stabilize it and keep it from banging and rattling. here
Expanding foam isn’t just for stopping drafts and heat transfer—if you’ve purchased a can to seal some drafts and have a bit left over, it’s just the ticket for silencing noisy pipes and water hammer. Water hammer occurs when the valve on a pressurized water line closes, causing built-up pressure in the pipe to shake the pipe, sometimes hard enough to slam it into nearby wall studs or other pipes and cause quite a racket. here
Packaged in a pressurized can with a straw attached for spraying into gaps and cracks, the terms expanding foam, spray foam, and foam sealant are used interchangeably in the construction industry, but they don’t always mean the same thing.
Before you purchase a can of expanding foam, read on to find out more about this innovative product and learn some crucial dos and don’ts.
The best practice is to spray a light bead of low-expansion foam in the gap around the window. If it’s not enough, add another bead, and then another, if necessary. Layering light beads of low-expansion foam is a safer practice than filling the entire gap with high-expansion foam. here
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Insulation is vital to help keep out the elements and noise, as well as keeping the desired environment inside of the home. If there is an air leak, the environment you want inside your home is disrupted by the climate outside. This means that your heating and air must work more frequently, wasting energy and money.
I'm a registered architect in New York and a member of the American Institute of Architects.
As the cavity fills, they will remove the hose and start injecting from a higher point if they used a multiple hole method. If they used a single hole, they would reinsert the hose in an upward direction until it reaches the top of the wall. The injection continues as they slowly pull the hose out once more. here
Can you use expanding foam in cavity walls? Yes, you can use expanding foam insulation in cavity walls. Expanding foam insulation has increased in popularity as the manufacturers have praised its uses and abilities, and its applications have reached to include cavity walls.