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Wood frame windows provide better insulation, but they are a poor choice for durability or maintenance (unless you choose wood-clad windows). Vinyl and fiberglass are better insulation and noise reduction materials. Certain windows have vinyl or fiberglass frames that feature chambers, to further enhance insulation and noise reduction. [7]
Whereas yachts of 24 metres and below may be constructed of fiberglass, larger yachts are more likely to be constructed of steel, aluminum or composite fiber-reinforced plastic. [15] Such yachts may be considered "superyachts" and are more commonly at 40 metres (130 ft) or more in length. [2]
Aluminum and aluminum alloys are used both in sheet form for all-metal hulls or for isolated structural members. Many sailing spars are frequently made of aluminium after 1960. It is the lightest material for building large boats (being 15–20% lighter than polyester and 30% lighter than steel).
The mid-1970s saw an increase in interest in sailing as oil prices began to climb following the 1973 Oil Embargo; however, with petroleum as a major component for plastic resins manufacturing costs also increased. In early designs the solution to engineering problems was frequently: just add more fiberglass. The early boats were sturdy but heavy.
“On average, it will cost $50 per foot of the yacht per year to store in a wet slip at a dock in a marina, but it can cost well over $200 per foot per year in high-demand locations in California ...
A small quantity of polyolefin is melted as an adhesive to bind the product together (and is preferable to formaldehyde adhesives). Installation is similar to fiberglass, without the need for a respirator but requiring some additional time to cut the material. Cotton insulation costs about 10-20% more than fiberglass insulation. [23]
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