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DK construction solutions

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Offers services in KNEBWORTH
At DK Construction Solutions, we bring your vision to life with a wide range of expert services, including: Tiling: Per...
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MCC Service London

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Offers services in KNEBWORTH
MCC Services London Ltd. is a specialist building company located in North London and covering all of London and the surro...
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Handyfox

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Offers services in KNEBWORTH
If need home repairs or have a list of things to do around the house, and you are having trouble finding a skilled handyma...
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Timberwise (UK)

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Offers services in KNEBWORTH
Caring for properties for almost 50 years throughout the UK in Damp Proofing, Dry Rot, Wet Rot, Woodworm, Waterproofing an...
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PowerHouse Installations

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Offers services in KNEBWORTH
We are a local small business offering general building services including flooring, kitchens, bathrooms, plumbing and til...

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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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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08 Dec

Insulation | Cavity Wall

Abbots Langley - WD5

Enquiry from: Darren T

Start Date: Immediate

drilled holes for pumped insulation for 2 external walls of house

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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 2025
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 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.
Which type of insulation is best?

The best type of insulation for your property will depend on the type of walls and any insulation that’s already present. It’s usually a good idea to have some form of wall insulation as well as loft insulation, as this helps to prevent heat loss in both areas.

how to insulate a loft roof?

Insulating your loft roof comes with a wide range of benefits. Not only do you get to maintain a comfortable temperature in your house for longer, but you’ll also get to cut down on your heating bills. If you wish to insulate your loft roof, you’ve come to the right place! This process can be very tedious and time consuming especially if you don’t what you’re doing or lack the required confidence to pull it off. It’s advisable to hire the services of a reputable professional who can guarantee the best results for help and also save you some time and money that can come from potentially costly errors.

 

Before you start rolling out, you’d have to make sure that all cracks, gaps and holes in the ceiling are filled with either a standard filler or decorators caulk. You can also clean between between the gaps in the joists thoroughly. And finally, check for hazards that can cause you problems before getting stated.

  • Remember to leave ventilation gaps as you start from the eaves. Then work towards the loft’s centre, starting from the point furthest from the hatch.
  • Lay the first layer between the joists which should be 100 mm and then the subsequent layer should be 170 mm to make it up to the recommended 270 mm.
  • Carry the electric cables above the insulation and work around visible light fittings.
  • Cut the roll in the centre of the floor when rolling out from the eaves on both sides with the help of a craft knife. Ensure that there are no gaps between the insulation and the joists’ edges.
  • Lag pipes as you go in order to prevent walking over the insulation to get back to them.
  • Ensure that the loft is totally insulated
  • Insulate the hatch.
how much loft insulation do I need?

Over the years, more and more home and property owners are beginning to realize the huge benefits that can be derived from loft insulation being a worthwhile investment. It’s quite worrisome the way in which energy bills have soared over the past 10 years and loft insulation is a considerable affordable energy efficiency measure that can go a long way to help increase your home’s energy savings.

 

As far back as the 1980’s, the standard when it comes to insulation thickness was 25 mm to 50 mm which was, at the time, considered to be sufficient. However, building regulations have changed the norm that now states that a new build needs to possess 270 mm of insulation in the loft in order to achieve the required u-value of less than 0.16/m2k based on the standard rock wool or sheep wool insulation.

 

Generally with loft insulation, there’s a law of depreciating returns which implies that the first couple of insulation centimetres will save you many times the cost of the installation, however an extra layer or centimetre is going to add less value to the point where it’ll no longer be wise or worthwhile to add any further centimetre. Therefore, with cheaper energy prices 30 years back, that additional couple of centimetres was not just worthwhile, but with the recent alarming rises in costs of fuel, that additional £10 savings per year has all of sudden changed to £30 which makes it become a lot more attractive.

 

If you already have 270 mm of loft insulation, regardless of the material you’re looking to add you’re most likely not going to benefit from a top up. The cost of the materials and installation will definitely be too high for the couple of pounds it’ll save you per year.

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.

how thick should loft insulation be?

Over the years there has been an increase in the recommended thickness of loft insulation by the government. Obviously, the reason behind this is pretty simply - the thicker the layer of your loft insulation the bigger your savings. The UK government is very keen to every house in the country to have loft insulation fitted where possible as it helps to minimize the heating demands of these properties. Households get to benefit from loft insulation in so many ways which includes reduced energy energy bills as well as having a home that stays at a more comfortable temperature for longer.

 

Generally, for the government energy efficiency is crucial as it implies that the highest demand ( which is usually the time of the day when gas or electricity use is at its peak ) reduces, since each building requires slightly less energy. Overall, that ultimately implies that new power plants don’t have to be built which is some nice cost savings for the government.

 

In the 1980’s, any thickness of loft insulation from 25 mm to 50 mm was considered the standard. But then, building regulations stated that homes should have as much as 100 mm of loft insulation. Over time, this gradually increased to 270mm for new builds and also recommended for other properties, although not essential. As a result of this, there’s always a need to check how much insulation you currently have in your loft before you decide to purchase more. You may discover that you already have something within the range of 20 mm to 200 mm up there and knowing this and the insulation values will assist in determining how much more you’ll need to purchase, if any at all. You should also note that some modern materials can offer the same thermal insulation whilst not being as thick.

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.
Will external wall insulation stop condensation?

Damp issues on a property are usually generated by a lot of factors such as a poor or broken guttering, condensation and lots more. The question arising here is what is the possibility of External Wall Insulation (EWI) preventing condensation? Not only is EWI a reliable way to reduce condensation-caused damp, but it’s also one of the major reasons property owners in solid wall homes consider thermally rendering or cladding their external walls.

Condensation arises as a result of warm moist internal air hitting a cold surface such as the steaming up of both windows and mirror when having a shower. What happens here is the condensation of the water vapour in the air from a gas to liquid in the process of touching the cold surface - one whose temperature is significantly reduced to reach the dew point. At the dew point, condensation is very rampant, and to tackle this issue you’ll have to heighten the wall temperature in order to convert the moisture to vapour and permit it to pass through the wall. And that’s exactly the job of an external wall insulation!

To get started you must ensure that the walls are clean and dry prior to fitting the external wall insulation. The month of May through to September when the weather tends to be dry and more stable are usually the best period to carry out the project. The external wall insulation will function just like a cosy blanket around the building. Ultimately, changing the feel and temperature of the inside of your home. As a result, the previously cold walls will no longer be cold which goes a long way to mitigate the effects of condensation. Furthermore, when an EWI is installed, the rooms of your home will automatically trap more thermal mass as the heat is saved in the walls’ fabric and released back when the temperature drops.

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