Exterior Thermal Cladding a Victorian House

Exterior Insulation Cladding on older houses

For the majority of home-owners living in period homes it can be very difficult to picture what an outside thermal cladding system would look like. This is especially true if the walls are still the original brick and the new external wall insulation syustem is to be a coloured render finish.


Insulting the outside gable wall

Single Wall Insulation blends with the other elevation


As the above photo shows having just one outside wall thermally insulated can be visually attractive and can compliment the other walls, especially if the colour choice is well thought out.

Outside Insulation for Victorian, Edwardian & Georgian Homes

The vast majority of victorian and early edwardian homes are solid wall construction and so are perfect for the huge increases in energy efficiency and bill reductions that are a result of fitting exterior wall insulation.

Yet another option is to have the front facade thermally clad with a real brick finish either from a newly made brick slip tile or sourcing a reclaimed brick for a genuine reproduction finish.


Please call or email us if you want to discuss these and other options available for period homes and outside wall insulation.

Posted in: Outside Insulation

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What is the U value of my wall ?

Typical U values for solid wall houses

Whilst there is a great variety of construction materials and methods within the UK the following table is based around the most commonly found solid wall construction ie a 9 inch solid brick wall with 10mm of internal plaster .

The figures show the net U value achieved by the different external wall insulation materials that are used for thermally cladding the outside walls of our homes.

U Values Achieved

From an initial 2.05 to 2.10 U value the following can be attained:

9 inch solid brick & 10mm plaster

Depth                  EPS         Rockwool       Kingspan Phenolic

40mm                 0.63            0.62                    0.45

50mm                 0.54             0.53                    0.35

60mm                 0.47             0.46                   0.30

80mm                 0.38             0.37                    0.23

100mm               0.31              0.30                    0.19

Cement Render Insulation Value

The addition or presence of 25mm of external sand and cement render has virtually no insulation value at all and only reduces the above by 0.01.

Cavity, Blockwork & Timber Frame U values

THINC can also calculate insulation requirements for virtually every type of construction method and we welcome any enquiry for a specialist calculation that you may need.


Posted in: Thermal U Values

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Woolaway Homes Grants in Wales

Woolaway Concrete Homes

Not sure if this is going to be of any use but a blog watcher of ours has just told me that in Aberystwith there are some grants for external wall insulation for houses of concrete construction and especially those of the Woolaway style.

These are basically constructed of  solid concrete  panels and do not have a cavity to insulate so must rely on an exterior cladding system to bring the property up to the latest thermal standards.

Apparently these grants are part of an initiative in Wales to upgrade the most poorly insulated sections of older housing stocks. We can access partial grants for Woolaway owners but any extra subsidies are very welcome.


We do have a suitable external insulation system for Woolaway homes and so if you are looking to find out an idea of likely cost or simply want some more information please give us a call.

Posted in: Concrete Built Houses

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U Values – What do they tell me ?

U Value Improvements

Under the Building Regs Part L1B any new house being built or any existing house having work done on outside walls has to meet certain thermal efficiency standards.These standards are to ensure our homes are nice and warm in winter whilst also being energy efficient and cutting both carbon emissions and energy use.

Expressed in numerical terms the  U value measures the ability of a material to retain heat and the speed at which it allows heat to pass through it. The target for a new home is 0.25 U value and for an existing home undergoing renovations to a wall it is 0.3  if possible but no worse than 0.7.

Solid Wall Heat Loss

Heat escaping solid walls

Solid Wall U Value

Most of the UK’s solid wall homes are constructed of two brick courses deep  totalling  9 inch thick  and have an average U value of 2.05 to 2.1 ie the new standards achieve around an 80% increase in thermal performance of the wall.

The Energy Saving Trust estimate an average 3 bed semi could save around £400 per year in heating bills if they took the correct insulation measures.

Home Energy Check

At this time of year in particular -  it is snowing quite heavily as I write this on 2nd December  – it can be very instructive and financially rewarding to take a step back and really think about ways in which you could save energy and money throughout your home.

Please click  a free home energy assessment to take a quick energy road test courtesy of the Energy Saving Trust.


.                                THINC  Wethertex  -  better for the experience

Posted in: Thermal U Values

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Energy Cost Savings from Wall Insulation


Whilst it can seem that every man and his dog are  shouting  from the rooftops about the value and efficiency of home insulation there is precious little detailed information on the pounds, shillings and pence that can actually be saved in particular from insulating cold solid walls.

Whilst every home uses their heating in different ways with varying temperature and timing settings it is possible to extrapolate certain guide line cost savings beased around authoritative bodies who publish independant figures based on serious scientific research.


The following figures are based around a 5% annual price rise :

House    10yr Saving    Annual Saving at 10 yrs   20 year Saving        Annual Savings at 20 years

semi          £ 5,231       £ 620                           £ 13,841                        £1,061

det’d        £7,546            £ 977                         £ 20,006                      £1,516

Whilst these figures are purely a projection at 5% per annum increases in heating bills we believe they are very conservative especially when compared to increases in the last 4 years . In fact the above assumes about a 50% increase in energy costs in 10 years time when we have seen this size of increase in the last few years alone.


The above fuel savings are based around the UK average household  gas consumption of 20,500kw/h from OFGEM and the Energy Saving Trust’s average energy cost savings of £400 for a standard 3 bed semi using gas central heating that undertakes solid wall insulation

The Energy Saving Trust assess a 3 bed semi as having around 75 m2  to 80 m2 of net wall area and from our experience that is an accurate figure with a 3 bed detached having around 120 m2 of  net surface area . The heating bill savings are based on these figures.


As for future price rises we do know that Ofgem have predicted a miniumum 20% rise by 2020 as a direct result of the  Energy Companies passing onto consumers the extra investment costs incurred to meet the legally binding Carbon Reduction targets and guarantees of future stable gas /oil supplies.

Throw into the mix the far greater costs of extracting oil from the new fields in the arctic and the extreme depths in the Gulf, along with increased demand from the likes of China and India,  and it is clear that the cost of oil and therefore gas will continue to climb.

Posted in: Fuel Bill Savings

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Gas Price Increases


The cynics amongst us will not be surprised to hear that within days of a sharp downturn in temperature, British Gas has announced a 7 % increase in its domestic gas prices.

In addition to this action from British Gas , Scottish & Southern also announced a 9.4% increase in gas prices as from 1st December. As they are the second largest gas supplier after British Gas it is a double whammy for consumers.


Temperature plummets as bills soar

Winter bites back


From the peak gas price – so far – of two years ago the wholesale gas price has dropped back by 40%  with a paltry 10% reduction in UK consumer prices !  Phil Bentley – CEO of British Gas – tried to explain that to counter the rise we , as consumers , should use less gas to keep warm as a result of more home insulation.


We are especially dismayed at the complete lack of any sizeable grants for people wishing to save energy by insulating their solid walls. The message seems to be if you have a cavity wall you are ok but if you live in one of the estimated 6 million “hard to heat ” solid wall homes then, TOUGH !

According to Mr Bentley his company alone has been obliged by law to invest £1 BILLION in Energy Efficiency measures to cut carbon emissions and as British Gas has around 50% of the UK market another £billion must be pledged by the other providers.

Interestingly he did not shy away from confirming this huge cost will be passed onto the consumers in higher bills despite any falls in wholesale gas prices in the future.


We would like to invite all our clients and blog followers and their families and friends to send an email or a letter to their local MP and ask them why the people most in need of help, those with the most energy efficient homes, receive the least amount of financial help ?

Please let us know what sort of reply , if any , that you get and we will publish them on the blog.

Posted in: Fuel Poverty

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Thermal Camera Scan


Due to the latest scientific breakthroughs it is now possible to take an infra red picture scan of the walls, floors and roof of a house to highlight how much heat is being lost from the inside. In these days of ever increasing gas,oil and electricity bills it is more important than ever to ensure that your home is insulated to the highest standards possible.

thermal loss

Heat escaping through walls

In the above thermal image the blue areas are nice and cold whereas the yellow and red areas are leaking heat and costing extra in the form of increase heating bills.


By taking a before and after thermal picture using our state of the art infra red thermal imaging camera we are able to demonstrate both the reduction in heat loss – ie an improved U value in the walls – and of course the reduction in carbon emissions as well.

.                                               WETHERTEX  – better for the experience

Posted in: Infra red Thermal House Scans

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This privacy policy sets out how THINC Wethertex  uses and protects any information that you give THINC Wethertex when you use this website.

THINC Wethertex is committed to ensuring that your privacy is protected. Should we ask you to provide certain information by which you can be identified when using this website, then you can be assured that it will only be used in accordance with this privacy statement.

THINC Wethertex may change this policy from time to time by updating this page. You should check this page from time to time to ensure that you are happy with any changes. This policy is effective from 5/11/2010.

What we collect

We may collect the following information:

  • name and job title
  • contact information including email address
  • demographic information such as postcode, preferences and interests
  • other information relevant to customer surveys and/or offers

What we do with the information we gather

We require this information to understand your needs and provide you with a better service, and in particular for the following reasons:

  • Internal record keeping.
  • We may use the information to improve our products and services.
  • We may periodically send promotional emails about new products, special offers or other information which we think you may find interesting using the email address which you have provided.
  • From time to time, we may also use your information to contact you for market research purposes. We may contact you by email, phone, fax or mail. We may use the information to customise the website according to your interests.


We are committed to ensuring that your information is secure. In order to prevent unauthorised access or disclosure, we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect online.

How we use cookies

A cookie is a small file which asks permission to be placed on your computer’s hard drive. Once you agree, the file is added and the cookie helps analyse web traffic or lets you know when you visit a particular site. Cookies allow web applications to respond to you as an individual. The web application can tailor its operations to your needs, likes and dislikes by gathering and remembering information about your preferences.

We use traffic log cookies to identify which pages are being used. This helps us analyse data about web page traffic and improve our website in order to tailor it to customer needs. We only use this information for statistical analysis purposes and then the data is removed from the system.

Overall, cookies help us provide you with a better website, by enabling us to monitor which pages you find useful and which you do not. A cookie in no way gives us access to your computer or any information about you, other than the data you choose to share with us.

You can choose to accept or decline cookies. Most web browsers automatically accept cookies, but you can usually modify your browser setting to decline cookies if you prefer. This may prevent you from taking full advantage of the website.

Links to other websites

Our website may contain links to other websites of interest. However, once you have used these links to leave our site, you should note that we do not have any control over that other website. Therefore, we cannot be responsible for the protection and privacy of any information which you provide whilst visiting such sites and such sites are not governed by this privacy statement. You should exercise caution and look at the privacy statement applicable to the website in question.

Controlling your personal information

You may choose to restrict the collection or use of your personal information in the following ways:

  • whenever you are asked to fill in a form on the website, look for the box that you can click to indicate that you do not want the information to be used by anybody for direct marketing purposes
  • if you have previously agreed to us using your personal information for direct marketing purposes, you may change your mind at any time by writing to or emailing us at [email address]

We will not sell, distribute or lease your personal information to third parties unless we have your permission or are required by law to do so. We may use your personal information to send you promotional information about third parties which we think you may find interesting if you tell us that you wish this to happen.

You may request details of personal information which we hold about you under the Data Protection Act 1998. A small fee will be payable. If you would like a copy of the information held on you please write to THINC Wethertex, 47 Bleakhill Way,Mansfield,Nottm,NG18 5EZ

If you believe that any information we are holding on you is incorrect or incomplete, please write to or email us as soon as possible, at the above address. We will promptly correct any information found to be incorrect.

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External Wall Insulation Costs



costs of external insulationIt is very difficult to give precise costs for external wall insulation for several reasons. For starters there are 4 types of insulation board,30 varying insulation thicknesses and a dozen or so different texture finishes !

Throw in the fact that our homes vary in size and style and you can see why it is nigh on impossible to give a definitive cost without the measurements of a property.





As external insulation is relatively new in the UK most people have little idea as to the likely costs. We have therefore put together the following guide to what sort of external wall insulation costs you can expect to pay.


The following costs should be expected on standard sized houses for a basic insulation system using a coloured render and a 50mm insulation board:

mid terraced /semi bungalow £5000

3 bed semi/end terraced /detached bungalow   £10,000 +

3 bed detached house £13,000 +

4 bed detached house    £16,000 +

As far as we aware we are the only professional external solid wall insulation company that is prepared to list example costs and we would like to point out that costs can be more or less than the above
ball park figures.

However, we can often obtain a solid wall insulation grant rebate to help towards the costs and this can often make the wor

If the level of investment needed fits your budget then we will be delighted to hear from you.


.                               WETHERTEX  -  better for the experience

Posted in: Costs of external Insulation

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As part of THINC’s commitment to saving energy and lowering heating costs we are absolutely delighted to announce we have teamed up with CELSIUS ENERGY UK Ltd to offer any homeowner taking up our external wall insulation a free loft insulation as from November onwards.

Celsius have over 20 years experience in this field and are a delight to work with and to deal with as a customer with a polite and dedicated staff.

free loft insulation


Good question. Sorry to disappoint you but there really is no catch. The only condition is that the loft insulation has to be installed either during our external work or after.


Firstly well done on cutting down heat loss in this way. Secondly you can still take advantage of the free offer by passing it on to any of your family or friends who do not have the recommended depth of  loft insulation !!

WETHERTEX  – better for the experience

Posted in: Loft Insulation

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