How Much Does Roof Vent Installation Cost?

Looking at the roof vent prices for the installation, these costs will depend on the nature of the roof ventilation. There are various types of roof vents and many combinations available. 

To have four tile vents installed, you’d pay about £375 to £425, whereas the instalment of four ride vents cost around £275 to £325.

To have twenty eaves vents fitted, expect to pay between £225 and £275.

It would cost approximately £475 to £525 to fit four ridges and twenty eaves vents, and you’d need a budget of £575 to £625 should you wish to have either four tiles + 20 eaves vents installed or four ridge and four tile vents fitted.

Roof Vent Prices

Type of Fitting Supply Cost Labour Cost Overall Cost
4 Tile Vents £180 to £220 £120 to £200 £300 to £425
4 Ridge Vents £130 to £170 £90 to £160 £220 to £330
20 Eaves Vents £100 to £150 £90 to £160 £190 to £310
4 Ridge + 20 Eaves Vents £230 to £20 £180 to £320 £410 to £340
4 Tile + 20 Eaves Vents £280 to £320 £210 to £360 £490 to £680
4 Ridge + 4 Tiles Vents £280 to £320 £180 to £320 £460 to £640
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What are the Supply Costs for a Roof Vent?

We’ll now look at the supply or material costs only of having a roof vent installed.

These costs exclude the price of labour and other expenses such as any waste removal.

In general, the supply cost of fitting a roof vent makes up about half of the overall cost.

roof vent on tiled roof

As a result, it would cost around £180 to £220 to purchase four tile vents, £130 to £170 for four ride vents, or £100 to £150 to get twenty eaves vents.

The material costs of four ridge and twenty eaves vents would be about £230 to £270, whereas the standalone cost of four tiles + 20 eaves vents or four ridge and four tile vents would be approximately £280 to £320.

What are the Additional Costs of Installing a Roof Vent?

Upon having a roof vent or multiple roof vents installed, you might want to pay for other jobs at the same time. Let’s have a look at some additional expenses worth considering.

Replacing Roof Tiles

If there are worn or broken tiles on your roof, you may want to replace them when having a roof vent (or several of these) installed. Obviously, the cost of replacing roof tiles will vary greatly depending on the type and number of roof tiles being replaced.

To have several roof tiles replaced would cost about £150 to £200 for clay tiles, whereas the price would rise to around £180 to £230 for concrete tiles.

To replace several slate roof tiles is priced at approximately £200 to £250.

However, in general, the cost of having all tiles replaced on a roof would likely set you back between £5,000 and £10,000.

Rendering House Exterior

Another job that could be a suitable and timely match for having a roof vent installed would be to have the exterior of your house rendered.

While the average cost of this job is around £3,500 to £4,500, prices may start at two grand and rise as high as £8,000

Pricing would vary depending on the size of your property, the difficulty of the work involved, the methods used, and the materials employed.

It's possible to perform this job DIY if you have the right skills and knowledge and understand all of the safety steps involved.

However, if you've any doubts, you should hire a professional. Hiring a professional would also give you the best chances of getting a higher quality finish.

Solar Roof Tiles

In these challenging times with rising energy prices, many are looking toward the future of increased use of renewable energy sources and energy self-reliance.

Should you wish to have 1kW solar roof tiles installed on your roof, it would cost about £8,000 to £12,000.

For 2kW solar tiles, expect the installation cost to be around £10,000 to £14,000, with prices reaching approximately £12,000 to £16,000 for 3kW solar roof tiles or £14,000 to £18,000 for 4kW solar tiles.

While there are no longer any grants that cover the installation of solar roof tiles, if you have some money saved, solar roof tiles are worth a closer look.

Tradesmen Costs for a Roof Vent Installation

What about the labour cost of having roof vents installed?...

On average, the cost of labour would make up around 50% of the overall cost of having roof vents installed. This equates to around £30 to £40 per hour or approximately £250 to £300 per working day.

Of course, the cost of labour would depend on a range of factors, including where in the UK you are based. The price of hiring professionals can differ from region to region.

side view of roof vent

For instance, London and the southeast of England tend to have higher labour rates than most of the UK, whereas you'll probably find below-average labour costs in the north of England, Scotland or Northern Ireland.

Other cost factors include the state of the work area, accessibility to the work area and whether scaffolding is needed.

How Long Does It Take to Install a Roof Vent?

The duration of fitting roof vents can vary greatly. For instance, four ridge vents or twenty eaves vents would take around four to five hours to install, whereas having four ridges and four tile vents are likely to last a full working day.

Looking at other timeframes, having four tile vents fitted takes about four to five hours. It takes about six to eight hours to fit four ridges and twenty eaves vents and seven to nine hours should you wish to have four tiles and twenty eaves installed.

The duration of installing roof vents depends on the size of the area, the type of roof vent is installed and other factors such as accessibility to the work area and the state of the said work area.

Duration of Installing Roof Vents

Type of Installation Timeframe
4 Tile Vent 4-5 hours
4 Ridge Vents 3-4 hours
20 Eaves Vents 3-4 hours
4 Ridge + 20 Eaves Vents 6-8 hours
4 Tile + 20 Eaves Vents 7-9 hours
4 Ridge + 4 Tiles Vents 6-8 hours

Types of Roof Vents

There are, of course, a range of roof vents available. You may want to know a bit more about these options and the pros and cons they offer. Let’s take a closer look…

Ridge Roof Vents

One common type of roof vent is a ridge vent. These, as you'd suspect, are fitted along the ridgeline. They are added along with soffit or fascia vents to improve airflow into the loft. If the loft space has a room, it's necessary for the ridge vents to be installed for the correct airflow.


  • These vents balance out your home’s temperature
  • Easy on the eye
  • Lets air move out of the loft naturally


  • Some risk of water leakage during heavy rain
  • Don’t always provide sufficient ventilation in some properties
  • Can more difficult and expensive to install

Tile And Slate Roof Vents

Another option is a tile or a slate roof vent. These options are slightly different. Looking first at roof tile vents, these are the easier options for installing roof ventilation. Their installation is pretty straightforward; one vent is used to replace one tile.

The good news is you can purchase roof tile vents that match the colour of the existing roof tiles on your property so that the new vents won’t appear unsightly.

tile and slate vent

Roof tile vents can come with a pipe adaptor fitting; this would allow you to establish a connection for soil vent pipes and bathroom extractor fans.

Moving on to slate vents, these are used to be installed in place of existing roof slates. While they are generally made of plastic, it's possible to purchase vents made from real slate.

They feature a grille under the base, enabling air to flow through the vent and out beyond the roof. Slate vents tend to be suitable for fitting a pipe adaptor; again, this can enable a connection for soil vent pipes and bathroom extractor fans.


  • Easy to fit
  • Can seamlessly blend in with the overall appearance of your roof


  • Have to be fitted from the outside

Eaves Roof Vents

Eaves vents are also known as soffit vents. They are fitted beneath the eaves of a roof where it extends beyond the warm wall line. When combined correctly with other roof vent technology, soffit vents enable the right airflow for your attic.

The two types or sub-categories of eaves/soffit vents are continuous and individual. The former has become a more popular choice recently since they allow more fresh air to enter a loft space than do individual soffit vents.

Individual soffit vents still have reasons for being considered; they are a solid option for problematic areas like partitioned lofts, hot bedrooms or kitchens.

Among the downsides of eaves vents are that moist air may gather beneath the soffits, which in turn would hinder the capacity of these vents to function properly. This brings with it the risk of roof damage as well as risking damage to the siding and under eaves.


  • Maintenance costs tend to below
  • Generally easy to fit


  • Moist air could accumulate beneath your soffits

Other Options

While we’ve looked at some common examples above, there are other loft vents on the market that may or may not be well-suited to your property and situation.

Here are some additional options:

  • Flat roof vents
  • Over fascia vents
  • Box vents
  • Hard-wired powered loft vents
  • Solar-powered loft vents

How Much Does It Cost to Replace a Roof Vent?

Replacing a roof vent with either new vents or new slates/tiles (if suitable and safe) will likely last several hours, but as with installing roof vents for the first time, it will depend on a variety of factors.

These factors would obviously include how many roof vents are being replaced.

The average cost of a roof vent replacement would be somewhere in the range of £400 to £700 should you wish to have new roof vents installed or £350 to 600 to add new tiles in place of roof vents.

The above costs assume that several roof vents are being replaced. Simply replacing one roof vent would be noticeably less expensive.

You may wish to replace roof vents because the existing ones are unsightly, have worn down to the point that a replacement is a better choice than repairs, or to have higher quality roof vents installed. 

On the other hand, you may no longer have a need for roof vents, so you would rather have new slates/tiles fitted in their place. Of course, it's essential to make sure that this is a safe option before availing of it.

tower roof vent on flat roof

You need to be sure that the vents really are no longer necessary. If in doubt, consult a professional.

In most cases, you could take the old roof vents to a waste management facility for disposal. However, it can depend on the material in question. If in doubt, contact your local waste management facility for advice.

Waste removal costs will be minimal if there are any at all, unless you have a large number of roof vents to dispose of.


Q: How do roof vent tiles work?

A: These loft vents are installed in place of existing roof tiles. These tiles feature a grille vent in the top cover for airflow purposes.

Rainwater can enter the vent and flow out via the bottom, whereas there is an under base for airflow between the attic and the outside. Beyond that, these vents come with a simple connection point for a piper adaptor.

As mentioned, adding a pipe adaptor can allow you to create a connection between soil vent pipes and bathroom extractor fans. Overall, this is how a roof vent tile works but the exact process and qualities of a roof vent tile can vary from product to product.

Q: What is the best material for a roof type vent?

A: Plastic vents are generally considered a better option than metal vents since the former comes with smooth rounded edges (meaning they are less dangerous to work with during installation).

They are also lightweight, so should they fall off, they’re less likely to cause damage if they strike any objects below.

Q: Is it possible to have too much ventilation for a loft space?

A: Yes, absolutely. If the ventilation fitted is not suitable for your roof/loft, then it can actually work against different vents already on your roof. So, it’s important that you choose the right options.

Q: What can happen if you don’t vent your loft?

A: Failure to properly vent an attic can result in several issues, with moisture being the biggest concern. If you fail to vent your loft correctly, warm, wet heat will stick around and use up space in your attic.

Moisture can, in turn, result in various problems such as mould, mildew and rotten timber.

Q: How much loft ventilation do I actually need by law?

A: Based on the building regulations, if a property is under ten metres in width and the roof pitch is 35° or greater, then 5mm ridge ventilation is needed along with 10mm eaves ventilation.


Author: Melissa

I have a Bachelor's Degree in Creative Digital Media, I'm a freelance writer and I've worked for clients such as the British Blockchain Association and I have experience in writing articles, YouTube video scripts, online guides and newsletters. I have written and produced many short films as well as a web series and feature film. I am also currently working on a novel.