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New Roof Installations

Our Testimonials

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Excellent work from D Hennessy and his team truly afficent hard working family company and a fantastic job on my roof, tks again Darren.

Paul Barrett

New Roof Installations Price Guide

As you consider purchasing a New Roof Installation from us at D.Hennessy Roofing, this cost and pricing guide will help you develop an initial budget and plan for the ownership costs associated with each type of New Roof Installation.

Free Call Out Roof Inspection and Written Estimate.

Costs of New Roof Installations: A Couple Things to Consider

There are two things to consider when researching the cost of New Roof Installations:

  • The initial purchase price of the roof

  • The lifetime cost of ownership associated with the roof


First, let's take a look at the initial cost of Slate Roofs, Tiled Roofs , Torch on membrane felt roofs or fiberglass or Liquid roof waterproofing Roofs to get an idea of how much to budget for each.

Keep in mind that these prices will vary greatly from the type of material you choose to select. Then, we'll look at the long-term cost associated with owning each type of Roof. Fibreglass, Slate Roof, Tiled Roof, Felt Roof, Liquid Roof New Roofs Initial Cost


  • Natural Slate or Fibre Cement Slate

  • Torch on membrane felt roofs

  • Liquid roofs

  • Tile Roofs


Let's take a look at each to learn more.

New Roof Installations In Dublin

Slate Roof Installation

We Make Your New Roof Installation Stress Free


Getting major work completed on your property can be stressful and time consuming. When you choose D.Hennessy Roofing as your new roofing contractor in Dublin, our experienced team do all the hard work for you.

  • Our team will manage the entire project from start to finish – including filling in all the documentation needed and working with your insurance company, if needed.

  • We adhere to Irish building safety regulations

  • We’re fully licensed and insured

  • We are a trusted member of the National Guild of Master Craftsmen

  • We arrange the scaffolding erection/removal

  • We safely remove your old roof and dispose of it properly

  • We make sure your property is left tidy and debris-free when the roof is finished

D.Hennessy Roofing provide new roof installation services throughout Dublin and the surrounding areas, tailored to your specific needs. Our expert roofers have years of experience installing flat roofs, fibreglass roofs, slate and tiled roofs and standard pitch roofs, fitted to each clients’ specification.

During the installation of your new roof, our expert roofers can also install gutters and downspouts – completing your roof work in one project, minimising disruption to your family.

For a hassle-free new roof installation in Dublin, choose D.Hennessy Roofing, we are one of the oldest and the best roofers in Dublin companies and always put our customers first.


Slate Roof Installations are classified into three size groups:

  • Size of the roof Project

  • Small House - 90 square metres

  • Medium House - 100 to 200 Square Meters

  • Large House - 200 Square Metres and above

In most cases, you can expect a small Slate Roof to cost between €2,000 and €5,000.


A medium Roof will cost between €5,000 and €10,000.

A large Roof will typically costs between €10,000 and €30,000.

We at D.Hennessy Roofing offer a free call-out a roof inspection and written estimate.

Resources are available to help homeowners to decide weather they want a tiled roof or a slate roof but the vast majority of home owners prefer to leave the installation of the roof to us roofing specialists.


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New Roof Installations start at €2,000 to €30,000

Standard Slate Roof Packages

A standard Slate Roof package typically includes the following:

  • Removal of old roof slates

  • Install New Roof Insulation

  • Install new breathable membrane felt to the roof

  • Install new slate or tiled roof

  • Install new Roof Gutters

  • Install new lead valleys or lead chimney flashings

  • Erect Scaffolding

  • Remove Rubbish material to skip

  • All our new roof installations come with a 20 year guarantee.


Standard packages can vary greatly from company to company, so ask specifically what it includes.

It's surprising how often a company charges to another company in the same line of business so always make sure you receive a written quote.

Check out our article to learn more.

It's also important to consider other details like warranties, the type of roof materials provided, and the Company Insurance Cert.

On average, most Customers can save several thousands of Euros by picking the right roofing company to carry out there new roof installation.

As a general rule most standard Slate Roof packages will cost between €5,000 and €10,000.

Some Customers will spend silly money on repairing a roof but unfortunately the roof still never gets fixed as the roof is just gone way over its life span.

Fibreglass roof Packages

The overwhelming advantage of a fibreglass roof installation.

Fibreglass Roof Installation in Ireland Fibreglass is so hard-wearing, D.Hennessy Roofing offer 20 years guarantee on all of our fibreglass roofs. Extremely versatile, our fibreglass roofs come in a variety of colours and finishes. Strong and waterproof, fibreglass roofs are a great alternative to more traditional materials.

Fibreglass roofs in Ireland are completely watertight, hard wearing and are a great long-lasting roofing solution.

D.Hennessy Roofing are Dublin’s leading glassfibre roofing specialists with over 25 years of experience in the roofing business. We are dedicated to providing the best fibreglass roofing service in Dublin.


Why Choose D.Hennessy Roofing?

  • We’re a family business from a long line of Dublin roofers

  • Competitive prices for roofing services

  • Free same day quote

  • Free 24/7 call outs

  • Variety of payment methods accepted

  • Unbeatable quality of work

  • Member of the National Guild of Master Craftsmen

  • Fully qualified and fully insured roofers on every job

  • Extensive experience in both domestic roofing


Benefits of Fibreglass Roofing in Ireland

  • An excellent option for ‘green’ roof projects

  • A fantastic alternative to lead, copper, zinc and stainless steel

  • UV-resistant finishes in a variety of colours

  • 100% waterproof solutions

  • Extremely lightweight – no need for structural changes to your home

  • Cheaper to install than alternative methods

  • Lower insurance costs

  • Reduced heat loss = lower energy costs

  • No chemical run-off

  • Easily repaired and refurbished

  • Can be easily removed at the end of it’s lifespan and recycled

For a free quote on your next Dublin fibreglass roofing services, get in contact with D.Hennessy Roofing today

D.Hennessy Roofing company handles all of the above, plus these details:

  • 20 year guarantee

  • Erecting of scaffolding

  • Scheduling and overseeing their work


The customer doesn't need to oversee or manage any aspect of

the project. On average, new fibreglass roof projects cost €2,000–€10,000. Projects that require extensive roof material works, roof valley features, or other elaborate elements can cost much more.

Check out this

You can also Quote on line quote

Want to start building a budget and figuring out what your perfect roof project might actually cost, with all the add-ons, accessories, and any related services and functionalities needed to transform your home into a leak free warm home?

Try our free quote and estimate tool! It's free, and you can get a better idea of your potential costs, while also determining what you need in your perfect new roof installation, and what options you might want to reconsider. You'll get your estimate in just a few quick clicks, so tap the button below to get started:

New Roof Installations: Initial Cost

Just to be clear, .

Roof Repairs is simply a way of solving your roof leak at a low cost but the guarantee is not the same as a new roof installation guarantee.

When it comes to the initial price of a Roof Repair vs a New Roof Installation, the primary difference is that there is no DIY option for (for most people, anyway).

Roof Repairs typically cost between €100 and €1000 euro.

The average cost of a Roof Repair is usually around €250 and up for basic Roof Repairs, depending on the size of the Job.

The disparity in price between Roof Repairs and New Roof Installations can differ greatly but a new roof installation is a much safer and longer guarantee.

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Liquid Roof WaterProofing: Initial Cost

Liquid Roof Waterproofing

Do you have a flat or low pitch roof that could use some TLC? Is your flat roof leaking due to the constant exposure to humidity, ultraviolet solar radiation and temperature fluctuations? Liquid waterproofing for flat roofs helps to extend the lifespan of your roof while protecting it against excess water and other factors which may affect its condition


A Simple Yet Effective Solution

The highly skilled roofing contractors at D. Hennessy Roofing in Dublin specialise in roof restoration and help clients give their roofs a new lease of life by using simple and effective liquid roofing solutions. Our team of Dublin roofers use a specially formulated liquid silicone and polyurethane coating known as the Lava 20 System. This innovative chemical formulation provides a smooth, elasticated coating for low pitched roofs and balconies to create a waterproof membrane that will help your roof deal with:

  • Damp

  • Excessive humidity

  • Heavy downpours

  • Temperature changes

  • UV damage

The Lava 20 System which we apply to your tired and damaged roof is an affordable, effective and long-lasting liquid roof waterproofing solution that also provides a layer of thermal insulation to your property. Our Dublin roofers cause minimal fuss and disruption to your home or business when applying liquid waterproofing for flat roofs. Should it become damaged accidentally, liquid roofing can be easily reapplied.

Why Should I Install Liquid Roof Waterproofing?

  • The Liquid roof waterproofing solution we use is resistant to chemical damage, as well as being highly resistant to oils and detergents, making it ideal for coping with medium foot traffic and access if needed.

  • Liquid waterproofing is extremely versatile and can be used effectively on everything from roofs, balconies and wet areas, to walkways, water tanks and terraces.

  • Choose from a grey or clear top coat for maximum protection as well as being great to look at whether in a wet room style bathroom or covering a roof where office windows look out on. Liquid roofing can also be used for detailing on chimneys, pipes, photovoltaic systems and guttering to create a waterproof seal.


Liquid waterproofing price per square meter starts at €90 per sq metre

Related links:

Contact the friendly team at D. Hennessy Roofing to learn more about liquid roof waterproofing

D.Hennessy Roofing


Still not sure which type of roof type or roof repair would best suit your needs?


Get some answers now by clicking below:

If your not sure about weather you need a roof repair or a new roof contact us today on 01 830 4004


Free Call Out Roof Inspection

Check out the other pages below to continue your journey to find the right roofing service for you.

Related Links: repairs

List of Services We Offer

Our team is made up of dedicated and skilled roofing contractors in Dublin. All our roofing services are tailored to meet the needs of our customers, all at an affordable price.


New Roof


Repairs &


Flat Roof


Emergency Roof


Installation Repair


Gutter Cleaning


Asbestos Removal


Liquid Roof Waterproofing






Drone Roof



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