Treforest Glass Acoustic Units

Sound proof your windows and doors for a quieter home and to lessen the risk to your health

No matter where it originates, from railways, aircraft's, road traffic or factories, noise is all around. Future trend research suggests that traffic and noise in general will only get worse.

Noise pollution is a serious issue, particularly when living in an area with high levels of air traffic or busy roads.

The careful and considered selection of glass of can be crucial in helping to reduce noise level and meet noise requirements. Acoustically insulating glazing can help keep noise outside so you can enjoy your living space in peace and quiet.

Too much noise can be damaging to health (increased stress, disruptive sleep) and can hinder academic learning and concentration. Noise levels are measured in decibels (dB). A comfortable sound level is around 35 dB in the daytime and 30dB at night.

What is Noise Pollution ?

  • Sound that is unwanted or disrupts ones quality of life
  • It is an underrated environmental problem
  • World Heath Organisations state that noise must be recognised as a major threat to human beings

We now know that noise pollution can cause stress and even ill health - heart conditions and high blood pressure, sleeplessness and altered breathing patterns.

 We can help reduce your noise pollution problems by simply swapping your glazing to sound proof your home

We have an experienced team who can advise on the best way to insulate your home from intrusive sound whether the sound comes from traffic in the form of buses, lorries, cars, motorcycles, aircraft's, trains or from school playgrounds, pubs, bars or even garden strimmers.


Future trend research suggests that traffic and noise in general will only get worse

Noise Control Acoustic Glass and How It Works

  • The highest noise insulation is achieved using an acoustic laminated glass 

Acoustic glass is a laminated glass and has a PVB inter-layer (Polyvinyl Butyral) that reduces the transfer of noise. 

Acoustically insulated glass cuts out excess sound and the harmful effect of noise and is particularly effective in the buildings near to high streets, urban traffic, motorways, train stations and airports.

Acoustic Glass Diagram

The acoustic glass within the double glazed unit comprises a special inter-layer which acts as a dampening core to prevent sound frequencies from vibrating from one pane of glass to the other, this absorbs and weakens sound energy, helping act as a noise barrier.

The inter-layer in the acoustic laminated glass also has the additional safety and security properties of laminated glass.

The highest noise insulation is achieved using an acoustic laminated glass

We use a warmedge spacer which also has acoustic properties enhancing the overall acoustic performance of the unit by a further 2db's.

Glass controls noise by :

  • Reflecting the noise back towards the source 
  • Absorbing the noise energy within the glass

Our acoustic warmedge spacer acts like a pillow inside the unit, dampening down sound reverberation as well as offering all the benefits of a warmedge spacer such as reducing heat loss and acting as a barrier.

As well as reducing intrusive noise, you can combine our acoustic laminate with other products to provide multi-functional glazing solutions with additional benefits such as increased security, thermal insulation, solar control and even self-cleaning / easy clean.

The sound reduction index (R) is essentially a simple one that expresses the difference between the sound intensity hitting one side of the structure and the resulting sound measured on the other side. The weighted sound reduction index:dB(Rw) - generally used in laboratory tests. 

Noise health effects are the health consequences of the regular exposure, to consistent elevated sound levels. Elevated workplace or environmental noise can cause hearing impairment, hypertension, ischemic heart disease, annoyance and sleep disturbance. There may be psychological definitions of noise as well. This causes the heart rate and blood pressure to increase, along with a spike in stress hormone cortisol, all of which are bad for heart health over the long run. A lack of sleep, caused by traffic noise, can also affect the immune system and metabolism. 

The Independent ran an article back in 2016 quoting evidence that noise pollution can be damaging: href=""> 

They give an example of residents in Bristol recently complaining of a "HUM" which followed reports of a similar sound in the city during the 1970's.

Such sounds aren't just annoying. They said there was increasing evidence that long-term environmental noise above a certain level can have a negative influence on your health. The effects can be physical, mental and possibly even disruptive of children's learning.

Treforest Glass Glazing Services can assist and our customers are thrilled by the results of installing acoustic glazing, it can be life changing. Please call our glazing services team for information and advise on what we can do to reduce noise pollution entering your home.


Acoustic insulation is very important to create a space where sound does not hinder concentration and does not add to the day-to-day stress experienced at work.

You can keep the workplace at a sensible noise level so you are able to create an environment with less outside influences, creating a more tranquil space.

Acoustic glass can be combined with many other products for multi-functional glazing such as insulation (low U-values), solar control, easy clean coatings and even decorative glass. Acoustic units do not have to be compromised. Reduce noise, particularly on roof lanterns when its raining. Treforest Glass are acoustic experts with many years experience consulting on acoustic glazing for commercial applications such as sound studios, schools, offices as well as domestic customers,

Our range of products can achieve sound reduction (Rw) levels of 50 decibels which is comparable to a brick wall.

Moments of Quiet Reflection

"Everybody has their taste in noises as well as other matter; and sounds are quite innoxious, or most distressing, by their sort rather than their quantity."

Jane Austen

"True silence is the rest of the mind: it is the spirit of what sleep is to the body, nourishment and refreshment."

William Penn

"We must hear the acoustic environment as a musical composition and own responsibility for the composition."

R Murray Schafer

"Sound is a great undiscovered country for business. Most organisations are blissfully unaware of their sound and yet sound affects people deeply. Sound can change people's behavior in almost any commercial environment."

Julian Tresure, The Sound Agency 

Key Facts

Surprisingly there is no audible difference between a standard single pane of glass, double glazing or triple glazing using 4mm glass in each pane.

Acoustic 2

Introducing an Acoustic Laminate into the unit offers huge acoustic improvements.

Acoustic 3

Our range of soundproof glass works to reduce noise levels inside your home to acceptable levels, without sacrificing daylight. 6.4mm or 6.8mm acoustic laminate is ideal choice in residential situations where there is excess noise from road, rail, or air traffic, as well as other sources.

The audible difference explained:

1 db     Is not noticeable

3 db     Is barely discernible

5 db     Is clearly discernible

10 db   Is a halving or doubling of the noise

Did you know Acoustic Glazing can be improved by using TruFit?

TruFit provides resistance to driving rain and provides thermal and acoustic insulation and air-tightness all in one product.

TruFit is a warm edge acoustic fitting product for frames, keeping cold air out and warm air in, also retains the energy rated performance of your new windows and doors, as well as improving the acoustic performance of acoustic glazing.

TruFit retains up to 23% more heat on average compared to traditional installation methods. TruFit is a compressed foam insulation seal for quick and clean window installation. It expands to effectively seal all gaps and spaces between the frame and wall to ensure consistent weather protection, air-tightness and eliminates draghts while soundproofing the frame and glass.

TruFit thermal imaging shows how much heat is lost at the edge of the window using traditional sealing methods compared to TruFit which keeps heat inside and noise outside!

Sometimes not enough importance is given to the need to properly insulate windows, yet the insulation of the gaps in the facade is so important that sealing a "defect" of only 0.1% of the total surface may increase the sound attenuation by 10dB (Decibels) or more.

We offer a full fitting service which includes a free survey, or for more information please contact:

Debbie Wise - Sales Director - 07943655799 or 01443 841313 Ext. 205

Glazing Services Team - 01443 841313