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Verified Pro

Loft & Build

0 review(s)
Offers services in KNEBWORTH
We can cover all aspects of a loft conversion and extensions. If you require, we can also design the project including dr...
Verified Pro

Coastal Prime

0 review(s)
Offers services in KNEBWORTH
Coastal Prime Ltd provides expert home insulation services across the UK, helping homeowners enhance energy efficiency and...
Verified Pro

Furnish Home

0 review(s)
Offers services in KNEBWORTH
We Provide Loft Conversions, Boarding, Loft Insulation, Hatch, Ladders, Velux, plasterboarding & Loft Storage Solutions in...
Verified Pro

Mgr Plastering & Building

0 review(s)
Offers services in KNEBWORTH
All aspects of building work and refurbishment, using quality tradesmen. We look after 4 Churches in the area and have an ...

Recent Insulation Installer Enquiries

13 Sep

Insulation | Loft / Roof

Knebworth - SG3

Enquiry from: Steve H

Start Date: Immediate

I have a 3-bed detached house in Knebworth, with loft insulation of 100mm depth and no cavity wall insulation. The property will be empty on 17th Oct. while I find a new tenant and I am looking to im...

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02 May

Insulation | Loft / Roof

Knebworth - SG3

Enquiry from: J

Start Date: Immediate

Attic insulation

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14 Jan

Insulation | Cavity Wall

Knebworth - SG3

Enquiry from: Colin P

Start Date: Immediate

Homeowner Supplied and fitted Please contact to appoint

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29 Jun

Building work | Sound Proofing

Barnet - EN4

Enquiry from: Monika A

Start Date: Immediate

Sound insulation in one medium sized bedroom wall

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02 Oct

Insulation | Cavity Wall

Barnet - EN4

Enquiry from: James M

Start Date: Immediate

customer in the barnet area made an enquiry a couple of projects including cavity wall insulation.call anytime and arrange an appointment to discuss. below is some details about this project: are you ...

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22 Jan

Insulation | Cavity Wall

Barnet - EN5

Enquiry from: Bhavesh P

Start Date: Immediate

Cavity wall insulation - beads

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17 Oct

Insulation | External Wall

Barnet - EN5

Enquiry from: DAVID S

Start Date: Immediate

Solid wall external insulation, semi detached bungalow with attic conversion

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21 Sep

Insulation | External Wall

Barnet - EN4

Enquiry from: Kate N

Start Date: Immediate

External wall insulation (not cavity) on one external wall only (side of house).

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03 Dec

Insulation | Cavity Wall

St. Albans - AL2

Enquiry from: Chris M

Start Date: Immediate

Asses and quote for cavity wall insulation. 1920s(?) built 4 bed semi.

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30 Sep

Insulation | Loft / Roof

Borehamwood - WD6

Enquiry from: Ruth G

Start Date: Immediate

roof insulation and loft boarded are you the property owner: owner of the property property type: terrace how many bedrooms do you have: 3-4 do you currently have loft insulationn: yes do you require...

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01 Sep

Insulation | Loft / Roof

Abbots Langley - WD5

Enquiry from: Gordon H

Start Date: Immediate

laying of new insulation in loft to replace existing inadequate insulation to the government recommended level of 270mm. work will require the removal of partial lattice flooring and replacement post...

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22 Aug

Insulation | Cavity Wall

Waltham Abbey - EN9

Enquiry from: Pelin K

Start Date: Immediate

customer has a insulation project they are looking to have done, specially they want quotes for cavity wall insulation. they are unsure of options so would like to discuss with a builder.confirmed int...

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01 Apr

Insulation | External Wall

Waltham Abbey - EN9

Enquiry from: Andrew O

Start Date: Immediate

need a quote for insulation to external walls are you the property owner: owner of the property property type: semi detached how many bedrooms do you have: 3-4 bedrooms property age: 1900-30 please c...

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27 Jan

Insulation | Loft / Roof

Borehamwood - WD6

Enquiry from: Zoe S

Start Date: Immediate

Loft insulation and roffing felt for butterfly bungalow

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18 Nov

Insulation | External Wall

Broxbourne - EN10

Enquiry from: Ramesh S

Start Date: Immediate

Ceiling insulation 170x375 cm

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01 Oct

Insulation | External Wall

Abbots Langley - WD5

Enquiry from: David R

Start Date: Immediate

insulate my conservatory roof edwardian style glass, 25sqm are you the property owner: owner of the property property type: terrace how many bedrooms do you have: 3-4 bedrooms property age: 1930-70 p...

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10 Aug

Building work | Sound Proofing

Potters Bar - EN6

Enquiry from: Daniel B

Start Date: Immediate

Lightning protection survey , quote on a comercial depot building .

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09 Jun

Building work | Sound Proofing

Borehamwood - WD6

Enquiry from: Mark C

Start Date: Immediate

Hi I would like an EPC test carried out on the former Salvation Army Building at 8 Bushel Lane, Soham, Cambs. I am not sure if the gas and electric are still working as they may have been cut off by...

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06 Apr

Insulation | Loft / Roof

Barnet - EN4

Enquiry from: Antoni M

Start Date: Immediate

we live in a semi-detached in east barnet. we have just moved in and believe the loft insulation in there is old and probably no longer effective. it would be great for someone to see and provide a qu...

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26 Mar

Insulation | Cavity Wall

Abbots Langley - WD5

Enquiry from: Ufnaan S

Start Date: Immediate

external wall insulation. are you the property owner: relative of owner how many bedrooms do you have: 3-4 property age: unknown property type: semi detached are you in a conservation area: unknown p...

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How much do Insulation Installer services cost?

How much do Insulation Installers in Knebworth charge?
Prices for Insulation Installers around Knebworth can vary depending upon the kind of work that you want to have done in your home. It's the inquiry we are asked a great deal "how much do Insulation Installers in Knebworth charge?". It's definitely very good to have an idea of how much a Insulation Installer will likely charge for their services. Prices are going to change based on the materials as well as the tradesperson picked. The table shows the sorts of service that Insulation Installers usually do and also the standard cost variety of these projects. Some projects take longer to finish than others so prices do be very different by job.

Tasks that Insulation Installers in Knebworth can do:

View our Insulation Installer cost guide View our Insulation Installer advice

The average price
of an Insulation Installer in Knebworth is:

£4,300

Insulation Installer job Insulation Installer cost in 2026
Loft insulation in Knebworth £450-£690
Cavity wall insulation in Knebworth £400-£820
Roof insulation in Knebworth £7,500-£11,500
Soundproofing in Knebworth £900-£1,380
External wall insulation in Knebworth £6,000-£15,000

Related Insulation Installer searches in Knebworth

Insulation Installer FAQs

Is external wall insulation safe?

With the numerous benefits that comes with the installation of an external wall insulation in a building, it’s also important to find out whether it’s also safe before proceeding to fit one in your home. Firstly, to ensure that external wall insulation systems are safe, they must be BBA approved, which means they’ve been subjected to a thorough testing by the British Board of Agrement and therefore, suitable for use in UK homes.

Given the fact that cladding materials have recently generated a lot of debate and negative press about how reliable some particular materials are, questions are being asked of the safety and reliability of external wall insulation. However we must clarify that, although external wall insulation can be classified under cladding, it is very different to rainscreen cladding - which caused the Grenfell fire tragedy.

External wall insulation is completely safe. However, when it comes to fire, the safety of your system depends largely on the insulation type in question. The safest type of insulation you can have installed is the Rockwool insulation boards which are rated as Euroclass A1 non-combustible. The board is specially designed in such a way that it contains fire - preventing it from reaching the other areas of the building. They also do not produce harmful emission or smoke when impacted by fire.

Meanwhile, the Wood Fibre, is also a great insulation which is known to char and not burn. Contrary to many beliefs, it actually burns slowly creating this charring effect which produces an oxygen barrier that helps reduce the spread of fire.

To make your system safer, you can also make use of Fibreglass Mesh for reinforcement. It helps to improve the strength of the tensile which promotes the security of the boards attached to the wall.

How good is external wall insulation?

External Wall Insulation (EWI) is the act of insulating a home by fitting insulation to the exterior parts of the building which in turn improves thermal performance, cuts energy consumption ( savings on energy bill) and also adds to the home’s visual appeal. The systems are built in multiple layers, with the insulation board offering a plethora of options with each being suitable to varying projects and their needs. Installing an external wall insulation comes with a variety of benefits, let’s have a look!

• Thermal Performance Improvement

With EWI, the thermal inertia of the walls are greatly enhanced while also restricting the loss of heat. Ultimately, this lowers heating costs, enhances the comfort of indoor thermal and also reduces CO2 pollution.

• Eliminates Noise Pollution

When the noise levels are high, it can have a bad impact on our overall well being. A great way to reduce the disturbances from the outside like traffic noise is by fitting an External Wall Installation system.

• More Comfortable Living Space

Do you know the damp in homes can contribute to respiratory problems? A properly insulated home will greatly limit the impact of condensation by combating the damp issues. As a result, you can always expect your house to be cosy and comfy irrespective of the season. A cooler summer and warmer spring is guaranteed with EWI.

• Enhances The Property’s Visual Appeal

Looking for an excuse to rejuvenate your home’s aesthetic appeal? Well, you can as well try out adding an EWI system. There are a plethora of unique colours and styles you can pick from to beautify your home effortlessly.

• Adds Value To Property

An insulated home will generally cost more than an uninsulated one at the time of resale. Potential home buyers are more interested in the acquisition of a home with an EWI system due to its various benefits - and a higher demand can only imply a higher price!

Is loft insulation flammable?

When thinking about the right insulation material for your loft, some of the first few things that comes to mind is the various properties of that material as well as how good they fit with your home’s needs.naturally, you’d like to ensure that the insulation will be efficient enough to add to the overall energy efficiency of your home, however there are also other features that may not get as much attention but also happens to be equally important. As the primary function of an insulation is to blanket your house to offer a barrier against heat loss, going for an insulation material that’s also fireproof is crucial as loft insulation can burn. Although most insulation materials are fireproof, a myriad of problems can actually make your insulation burn.

 

For instance, fibreglass insulation is produced using glass combined with plastic polymers and is naturally resistant to fire. However, even at that you’d have to be careful with batts that are supported with foil or paper due to the fact that these materials can burn pretty quickly. Cellulose, on the other hand, is not fireproof and is required to be treated by other flame retardants in order to help reduce combustion. Some of the best insulation materials that are resistant to fire includes the following:

  • Fibre glass. This is made of glass that’s spun into fibres, then combined using plastic polymers. As a result, fiberglass insulation is naturally resistant to fire.
  • Mineral wool. Having a high melting temperature, this insulation material happens to be a great fit for thermal applications due to its superior fire resistant properties. In fact, mineral wool is still naturally non-combustible even if composed of recycled iron and steel by-products, or from actual mineral rock itself.
how does cavity wall insulation work?

In recent times, more and more home and property owners are starting to come to terms with the large returns and little investment in cavity wall insulation provides. For a relatively little amount you can achieve a lot, from an increase in your home’s energy efficiency and reduction in heating bills to a huge boost in your property’s resale value and lots more. This makes you wonder how an ordinary insulation can help you achieve so much, right? Well, you’re definitely not alone! Several other potential investors are also eager to know exactly how the cavity wall insulation works to deliver all these juicy benefits. In this post, we’re going to go provide you with a detailed insight on how cavity wall insulation works. Let’s take a look!

 

Typically, cavity wall insulation works as acting as a shield which prevents the escape of heat from your home. It features a reflective surface which serves as a barrier to reflect heat from one side of the panel, effectively minimizing the amount of heat conduction that escapes through. This protection of your home from heat penetration comes with a couple of benefits with the obvious one being an incredible thermal efficiency. An insulated home or property is able to maintain a much more balanced temperature throughout the year – staying a lot cooler during the summer months and retain the heat generated during the winter months. However, a less talked about benefit is the fact that when an insulation is done during the construction of a house, the whole development phase can be completed a lot quicker. This is mainly because insulation offers total protection against weather conditions which enables internal trades to continue without the need to wait for brickwork or cladding to be completed.

How long does it take to install insulation?

How long it takes to install insulation will depend on the size of your property. In general, loft and cavity wall insulation can be installed in a day or two. External wall insulation will usually take longer to install. The rep or installer will be able to advise you when quoting for the job how long this will be.

Will insulation save me money on my energy bills?

This depends on the amount of insulation already present in your property. However, adding insulation has been proven to improve the energy efficiency of your home and decrease your heating bills, this is more obvious in older properties or where single glazing is still in situ.

does loft insulation cause condensation?

The short and simple answer to this question is yes, loft insulation does cause condensation. Over the years, problems with condensation in loft spaces have become increasingly common. While this may not be harmful in anyway, when the condensation becomes excessive it can lead to more serious issues taking root in your loft like wet rot, dry rot as well as black spot mould. Generally, the best thing to do if you’re concerned about the condensation in your loft space and that it may rapidly become a bigger problem is to get in touch with a damp specialist as soon as possible.

 

Even though insulating your loft space comes with a wide array of benefits like making the top floor rooms warmer, it’s however comes at the cost of making your loft or room space cooler. Condensation in lofts take place primarily due to the humid air making its way through insulation or other gaps into the loft space and touching a cooler surface which in turn results in beads of moisture on the timbers, lintels as well as the underside of the roof. This is why its always a great idea make use of thermal insulation with a vapour barrier that’s installed on the warmer side of the insulating material.

 

Condensation in loft is caused by excess moisture in the air and lack of adequate air ventilation. Here are some top reasons that gives rise to this in the loft:

  • Extra insulation has been installed in the loft leading to a restriction on the natural air circulation in the property.
  • When the storage boxes or other items that has been stockpiled in the loft blocks the roof vents.
  • The release of steam and moist air into the loft space by hot water tanks.
is cavity wall insulation a good idea?

Cavity wall insulation is basically the process of installing an insulating material between the two layers of brick making up a cavity wall, either as a retrofit measure or at the time of building. Obviously this is not a choice if you have solid wall, but for those who do possess a cavity wall, it represents an opportunity you may not want to let slide as it is a worthwhile and affordable wall insulation option. Clearly, cavity wall insulation will make your home or property feel warmer, but it also does come with a range of other benefits which is why we’d recommend installing it. In this post, we’re going to look at a number of reasons why having a cavity wall insulation done is a good idea.

  • It’s one of the cheapest energy saving measures that’s available. Not only is cavity wall insulation really effective, but it can also deliver great saving. In other words, it possesses a bigger payback compared to other options. When compared to other types of insulation, you can’t install cavity walls insulation by yourself, however it’s not so expensive to have it installed. The cost of the insulation will be determined by a number of factors such as your location, the company hired and more.
  • It reduces your energy bills. Cavity wall insulation can save you about £100 to £200 on a yearly basis on heating bills. In other words, this is usually able to pay for itself in as little as two years.
  • It reduces your carbon carbon footprint. If your home is heated with gas or electricity like several other homes, producing that energy involves burning fossil fuels which is known to be hazardous for the environment. If the heat generated is now allowed to escape through the walls, that means you’d have to use more to keep up your required temperature. Installation of cavity wall insulation in homes will enable a more efficient usage of the energy which will ultimately cut UK’s carbon usage.

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