A garden office blog from Extra Rooms

Welcome to Extra Room’s garden office blog.

We love sharing all our garden building knowledge and stories with you!

Decibel Meter Survey

Some interesting facts about sound:

Sounds consist of pressure waves. The intensity of sound is known as the sound pressure level, or SPL.


The human ear can detect a wide range of sound pressure levels. Sounds can be very soft, such as the ticking of a wristwatch, or very loud, such as a top fuel dragster doing a burnout. The intensity of sound pressure can be measured, and is expressed as decibels, or dB.

Alexander Graham Bell founded the concept of decibels and formulated a logarithmic scale based on 10. "Deci" refers to the base 10 log scale, and "bell" refers to Alexander Bell.

Each 10-dB increase represents a tenfold increase in sound intensity. In addition, a 10-dB increase is perceived as roughly doubling loudness.

A few examples of decibel readings are:


1 - 25 dB - Human ear begins to detect sounds at this baseline


40 - 50 dB - Sound levels in the average home


60 dB - Normal conversation


70 dB - Negative responses begin in the body. The autonomic nervous system kicks in.

All sounds consist of waves of pressure moving through the air. As decibels increase, these waves of pressure get stronger and have more physical force. The human body reacts to this physical force through HEARING and FEELING the bombardment of sounds.

When sudden, strong sounds reach the ear, and are transmitted to the brain, the body reacts by triggering the autonomic nervous system. This automatic system is in place to protect us against danger. This system produces the "fight or flight" adrenaline response, which prepares the body to either fight a danger, or flee from danger.

In addition, when intense sound waves are combined with excessive low-frequency vibrations, the effect is tremendously damaging to the body, as well as to physical structures, such as buildings, etc.


Noise over 70 dB - Increases the risk of heart attack by 20%


Noise over 90 dB - As this intense sound bombards the body, the adrenaline reaction is so powerful that people become openly hostile and belligerent.


120 dB - Standing behind a Boeing 707 while it is in full thrust, just before takeoff. Hearing loss can occur after just 7.5 minutes.


120 - 130 dB - Sound threshold for pain


120 - 140 dB - Inside the average street boom car. Boom cars with higher levels are usually seen in dB "drag racing" competitions.



Written by David Fowler at 12:13
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Kids grow up so fast – but garden rooms don’t!

We have noticed recently that more and more of our clients are purchasing our garden rooms with a progressive function plan in mind. What we mean by this is that instead of instituting a concrete purpose from the start, many people are looking to reflect their changing lives and needs through their garden room.

garden play room

In this respect, we often find that our garden rooms provide the optimum multi-functionality to clients who are expecting or those with young children. From self-contained accommodation for a live-in nanny to a garden play room, a garden room can offer a practical aid to a growing and busy family. (Especially as you can expect a garden office to last anyway between 50 and 60 years – probably much longer than you’d hope your brood to stick around!!!)

However, in recent years, we have witnessed a number of clients investing in garden rooms not for their babies but for their teens. As teenagers we remember spending our Saturday evenings down at the youth club chatting up girls and playing football. Now, however, clubbing culture has undeniably permeated the awareness of modern teenagers and (we are told by our own children that) the lure of drinking and dancing is a constant theme amongst peer groups.

Considering this, garden rooms are starting to be used as a space that bridges the gap between the desires of our clients to keep their teenagers safe and the inherent impulse for teenage children to push boundaries. Having access to a private space which is detached from the house (yet within reach) enables children to explore and enjoy a legitimate form of independence and also improves relations amongst family members. We are really championing this idea and have formulated a list of uses for the teenage garden room to inspire all those parents out there who have children on the brink of adolescence!

  1. Sleep-over room
  2. Den/snug
  3. Music room
  4. Club house
  5. Study
  6. Games room
  7. Party room
  8. Fitness/dance studio
  9. Hobby room

If you would like to discuss garden rooms in more detail or the types of garden rooms we have designed and installed then please send us an email or give us a ring on 01159 899 555 in the day and 01949 813 813 in the evening! Alternatively check out our garden room case studies page.

Written by David Fowler at 10:47
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The Extrarooms Garden Office Blog has arrived!

Welcome to the new and improved ExtraRooms garden office blog!

We’re very excited to finally have somewhere where we can both update you on all the exciting projects we are continually doing and get involved in the world of garden building enthusiasm! You never know, we might even be able to impart some of the knowledge we’ve collected designing, building and installing garden rooms over the past few decades!

garden offices

Written by David Fowler at 10:23
david fowler extra rooms garden office blog

David Fowler, Founder of Extra Rooms