If the grave site is low on water content or moisture, metal caskets are known to last even longer, over five decades. Under favorable weather conditions, experts say that metal caskets may even last more than that – up to 80 years.
Wooden coffins (or caskets) decompose, and often the weight of earth on top of the coffin, or the passage of heavy cemetery maintenance equipment over it, can cause the casket to collapse and the soil above it to settle.
Stage 3: Active Decay
Occurs: 8+ days after death. After a few weeks, nails and teeth will fall out. After 1 month, the liquefaction process commences. During this stage the body loses the most mass.
By ten-years, given enough moisture, the wet, low-oxygen environment sets off a chemical reaction that will turn the fat in the thighs and bottom to a soap-like substance called grave wax. However, in drier conditions, the body could also be mummified – that's mummification without wrappings, or chemicals.
The ground conditions affect the decomposition rate. If the coffin is sealed in a very wet, heavy clay ground, the body tends to last longer because the air is not getting to the deceased. If the ground is light, dry soil, decomposition is quicker.
Coffin flies have that name because they are particularly talented at getting into sealed places holding decaying matter, including coffins. Given the opportunity, they will indeed lay their eggs on corpses, thus providing food for their offspring as they develop into maggots and ultimately adult flies.
As mentioned, most of the caskets are not airtight, and advanced decomposition will lead to unpleasant smells even in a closed service. However, it is especially important for funerals with open caskets, as all measures must be taken to ensure that loved ones can say their farewells before decomposition begins.
Coffins are not watertight so when the grave fills with water it also fills the coffin, which decomposes and rots the bodies faster. In my opinion this is where the water mixes with the body and embalming fluids," he explained.
Open Casket Funeral Etiquette
While some people find comfort in seeing their loved ones as they remember them, it may also be uncomfortable to others. If they have an open casket viewing, make sure you follow proper funeral etiquette: DON'T touch the body under any circumstances.
A rather large overstuffed pillow is included in the interior package of a finished casket. This pillow helps to hold the decedent in an inclined position. This position helps present a naturally comforting presentation to the survivors.
That seems to come down to what your casket is made of. Rats are prodigious chewers and will bite through anything they can. A wooden casket likely isn't going to keep rats out, at least not over the long term.
The first type of insect to arrive at a dead body is usually a blowfly (Calliphoridae), attracted by body fluids and gases. It lays its eggs within two days after death, so its stage of development - egg, larval stages, prepupal or pupal stage, adulthood - will suggest how long the corpse has been lying undetected.
After the initial decay, and the body begins to smell, different types of insects are attracted to the dead body. The insects that usually arrives first is the Diptera, in particular the blow flies or Calliphoridae and the flesh flies or Sarcophagidae.
In a closed casket funeral, the casket remains closed during the viewing and the funeral service. Family members and guests are not able to see the body, and some prefer this option for a variety of reasons.
Over time, coffins underground will decompose and eventually collapse. Covering the face before closing the casket adds an extra layer of protection and dignity for the deceased's face and can act as a symbolic final goodbye.
What's really returned to you is the person's skeleton. Once you burn off all the water, soft tissue, organs, skin, hair, cremation container/casket, etc., what you're left with is bone. When complete, the bones are allowed to cool to a temperature that they can be handled and are placed into a processing machine.
The first insects to arrive at decomposing remains are usually Calliphoridae, commonly referred to as blow flies. These flies have been reported to arrive within minutes of death or exposure, and deposit eggs within 1–3 hours.
Because carcasses are an uncommon and short-lived source of nutrients, numerous insects may detect and travel to a carcass from kilometres away. During the bloating stage, fly eggs hatch and large quantities of maggots begin to feed on the flesh.
8-10 days postmortem: the body turns from green to red as blood decomposes and gases accumulate. 2+ weeks postmortem: teeth and nails fall out. 1+ month postmortem: the corpse begins to liquefy into a dark sludge.
Yes, it is disrespectful. Always walk between the headstones and avoid standing on top of a gravesite. Be considerate of other mourners. If a funeral is taking place, stay out of the way of the procession and burial.
The larvae feed on the dead tissue (or more importantly, on the bacteria that is decomposing the dead tissue) until they've grown, then they form a pupa, that eventually hatches out into the adult form. So, if there are maggots in a casket, it is because an adult female flew in when it was open an deposited some eggs.
A corpse generally progresses through five stages of decomposition—fresh, bloat (autolysis), active decay (putrefaction), advanced decay and skeletonisation.
For protecting the body
People have always tried to protect the body of the deceased for a long time. It's an attempt to care for it even after death. Caskets, be they of metal or wood, are sealed so that they protect the body. The sealing will keep the elements, air, and moisture from getting inside the coffin.
Do not place items such as e cigarettes, mobile phones or TV remotes in coffins. Batteries and compressed liquids will explode during cremation. Another item that should be avoided is alcohol. There have been cases where friends have put bottles of alcohol in coffins for cremation.