Archive for March 2018

Sound Testing in London

Unless plans were fully approved prior to 1 July 2003, sound testing will be required on your London development between rooms or spaces that share a common area of separating wall and/or floor as stipulated in Building Regulations Part E for the passage of sound. Sound Testing is not generally required for internal walls and floors within a dwelling-house, flat or room for residential purposes; however all internal partitions should be designed to achieve 40dB.

The buildings that require sound testing are:

  1. Dwelling-houses, flats or rooms for residential purposes created by conversion of existing buildings or new build rooms for residential purposes will need to be tested if work starts after 1 July 2004.
  2. New build dwelling-houses and flats will need to be tested if work starts after 1 July 2004.

The main aim of sound insulation testing in London is to ensure that minimum standards of sound resistance have not been compromised by poor workmanship and/or poor design. You are normally required to undertake sound testing to each type of construction, i.e. if you have a mixture of brick, blockwork, timber and metal studwork walls all four types would need to be tested, followed by a 10% sample of that type using the equipment shown in Plate A below.

Plate A – Our Sound Test Equipment.

For instance, if you have a project with 25 flats you would be required to do 3 x 6 pack of tests; each 6 pack contains 2 airborne wall, 2 airborne floor and 2 impact sound tests; however if any test failures occur, then the number of sound tests may need to increase on the development. When sound test failures occur, then the design and construction of the failed partitions will need to be revisited to try and evaluate the reasons for the failure; thereafter, agreement can be reached on how to rectify problem.

We have carried our hundreds of acoustic design reviews, so we are well placed to help you overcome any potential problems to achieve compliance with Building Regulations Part E.

When designing acoustic partitions you will need to consider the following

  1. The careful design of floor plans to avoid habitual rooms being placed side by side.
  2. The mass and density of products that you are using.
  3. Using good design detailing to ensure the careful isolation of materials.
  4. The whole construction detail and how it is made up.
  5. Undertaking careful acoustic detailing of junctions between walls, ceilings and floors.
  6. Using acoustic wall ties in cavity walls.
  7. Types of doors in sound resisting walls.
  8. Containment of noise within noisy parts of a building such as lift shafts.
  9. Positions of sockets and flues on opposite sides of walls to ensure they don’t sit back to back.
  10. Sealing and filling of joints.
  11. The use of cavity closers on window/door reveals.
  12. Careful sealing of service penetrations.
  13. Designing to reduce potential reverberation in common parts of buildings such as corridors and entrance areas and the subsequent use of absorbent materials.

Unfortunately unless the acoustic design has been taken into account, the floor and ceiling partitions can be the main pathways for sound transmission. The first type of sound transmission is airborne sound such as TV and speech; and the second is the passage of impact sounds such as footfall or children’s toys being dropped on the floor above. Achieving good airborne and impact sound isolation requires careful acoustic design considerations.

Plate A below shows one cost effective ceiling upgrade that can be undertaken on conversion projects. Firstly retain the existing floor joists, then above the joists install 22mm chipboard. Above the floor board install an acoustic resilient membrane and above this install the 22mm engineered floor. Within the joist cavity install 100mm AW IsoWool. To the underside of the joists fix a resilient hanger system and below this install two layers of 12.5mm sound boards ensuring that boards have adequate laps.

Plate A – A simple Acoustic Floor Upgrade

To try and help our clients achieve compliance with Approved Document E, we offer the following 4 step acoustic design package:

  1. Site Survey Visits – to let us view the existing site construction. This allows us to check for potential problematic construction such as inclusion of lightweight blocks in the existing construction. It also lets us check that the installation teams are installing the acoustic materials as per manufacturer’s guidelines.
  2. Sample Sound Testing – of the existing construction. This offers an accurate overview of the acoustic performance of the existing partitions which enables us to offer a targeted acoustic design using the sound insulation performance of the existing construction.
  3. Acoustic Design Review – a full design review of the proposed developments party walls and floors.
  4. Pre-completion Sound Testing to satisfy Approved Document E.

APT Sound Testing can advise on all types of acoustic design, whether it’s accomplished during initial construction or during a refurbishment/renovation project. We also undertake UKAS accredited sound testing providing a ‘one stop’ solution for all your acoustic requirements. If you would like more information in regards to sound testing please follow our blog at: or visit the APT Sound Testing website..


Enjoy the Benefits of Properly Installed Flooring

Vinyl and laminate flooring is being found in more and more homes today, and not just because of how affordable the materials are. These materials are proving to be more and more eco-friendly and easy to acquire and install, and having them professionally installed is also affordable compared to other flooring types. Yet again, there is a lot more to using professional laminate flooring installers than affordability.

Comprehensive preparation

While DIY trends are becoming extremely popular and can be quite fun, you run the risk of neglecting an important aspect of preparation: what goes under your floor. While it is true that laminate and vinyl flooring can be placed directly onto the surface you are working with there is always the risk of inconsistencies in the surface. This could be something as unassuming as undulations or as obviously threatening as cracks and rising moisture.

Laminate flooring installers are well versed in dealing with these problems, even if they don’t exist. These professionals know what signs to look for and how to compensate for whatever issues they find. For instance, installing an underlay before installing your laminate flooring will ensure that your flooring is evenly placed and has extra protection against damp and such from below.

Ensuring a perfect fit

One of the biggest problems that laminate flooring installers get called in to fix is the presence of curling and popping top layers. This usually occurs in DIY laminate flooring installations where boards have been forced into place, and presents even more danger because this curling allows an opportunity for moisture to seep in even deeper. This can be particularly wasteful, as you will have to spend even more money on replacements than you would have on professional service the first time around. So DIY isn’t always the greatest saving it appears to be.

Professional service guarantee

Making use of professional and reliable laminate flooring installers like FLOORIN gives you the benefit of service guarantees. Whereas when you do it yourself you are not held to any standards (although you will try your best), delivering prime performance is their professional point of pride. They will make sure that the job is done correctly, and in most cases where they make a mistake they will fix it. So get in touch with the experts at FLOORIN and let them explain to you in perfect detail exactly what it is you get from professional laminate flooring installation.


Heavy Duty Air Condition Machines Are Only Installed In The Offices

In all the offices, the fans are not at all used. The company needs to please the customers with a cool invitation. This is the reason the business is done by the company, with the cool atmosphere. The air conditions are producing very cool airs to the entire office. Even some people would be using the leather coats just for the heavy cool environment. The office would be maintaining this condition forever. If the air condition is not working in the office, the management could not do anything. Only for this purpose hiring excellent aircon repair service, the service attends the problem faced in the air con, in the less time. Of course, in case the spares are costly compressors needs to be changed the management is not minding to replace the compressors. Once the compressors are changed the office again gets the cool atmospheres in the total office. The office is well maintained the dust should not arrive to the air con. Once the dust is arriving to the office, the entire air condition equipment would be spoiled and that is the reason the offices are covering the place with the glass doors. The glass doors are carrying the dust, but the cleaners are cleaning only the glasses every day. In general once the glass doors are installed in the office there would be less opportunity for the air condition repair. One person should have to learn more and read more on aircon servicing in such a case he would be able to maintain the air condition in a good condition. In case the person understands about the internal products of the air condition he would be easily following all the repairs so one should read more on aircon repair, this would help him to keep the enough required spares at the place to replace the spares at the right time.


There are many service providers for the air condition, but only fewer services are able to get the reputation with the public. Once the service gains the experience in the air condition servicing, that service would be busy and the service could not be hired by anyone, because of the busy servicing. The busy service is always entering into the annual maintenance contract with the customers and doing their service in the great manner. Once person is used with cool atmosphere he could not stay in any place, absolutely he needs the very cool or cool atmosphere to maintain his body in the good condition.

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