Quick answer: To protect your home against global warming in Ireland, work in four layers. Check your flood exposure on the OPW flood maps. Fix the maintenance that storms exploit, meaning roof, gutters, trees and fences. Add resilience where the risk is real, through flood barriers, drainage and damp control. Then check your home insurance actually covers flood and storm damage at a rebuild cost that reflects today’s construction prices.
Climate change is no longer something that happens elsewhere. For Irish homeowners it shows up as heavier rainfall, stronger Atlantic storms, surface water flooding and higher humidity, all of which damage roofs, walls, windows and contents. Learning how to protect your home against global warming is now part of ordinary property ownership rather than an environmental side project.
This guide covers the physical measures that work, the ones that are not worth the money, what changes for older and coastal properties, and the insurance questions most homeowners only ask after a claim is declined.
Which climate risks should Irish homeowners prioritise first?
Not every risk applies to every property, and spending money in the wrong order is the most common mistake. Prioritise in this sequence:
- Flooding, if the OPW maps or local history put you in an exposed area. It causes the highest cost per event and the most insurance difficulty.
- Storm and wind damage, which affects every property in Ireland regardless of location. Cheapest to prevent, most frequently claimed.
- Water ingress and damp, the slow damage that rarely triggers a claim but quietly destroys value.
- Overheating, currently the lowest priority in the Irish climate but rising, particularly in airtight new builds and converted attics.
- Coastal erosion and storm surge, critical for a small number of properties and irrelevant for most.
Work down that list rather than starting with whatever grant happens to be available.
How is global warming affecting Irish homes?
Ireland is exposed to flooding, intense rainfall, storms and coastal impacts, and the Irish Government identifies these among the country’s main climate related risks.
For homeowners, that translates into:
- Roof, tile and flashing damage from strong winds
- Water entering through roofs, windows, walls and chimneys
- Flood damage to ground floor rooms, garages and outbuildings
- Damage from fallen trees and branches
- Drainage overload and sewer backup
- Damage to fences, gates, sheds and external structures
- Rising humidity, condensation and mould
- Higher repair and rebuilding costs across the board
Climate change does not mean every home will experience these problems. It means the odds have shifted, and the cost of each event has risen.
Check your home’s flood risk first
Flooding is the single most consequential climate risk for Irish homeowners, because it is the one that affects whether you can get insurance at all.
The Office of Public Works publishes flood maps and location specific information through its national flood information portal. Check your property against river, coastal and surface water flooding before you do anything else, and check it even if you have owned the house for years.
Surface water, sometimes called pluvial flooding, deserves particular attention. It comes from rainfall overwhelming drainage rather than a river bursting its banks, it can affect properties nowhere near open water, and it is the flood type increasing fastest with rainfall intensity.
Do not assume a property is safe because it has never flooded. Historic experience is useful evidence, not a forecast. Drainage capacity, upstream development and rainfall patterns all change.
Flood risk directly affects your cover. A property in a higher risk area may face exclusions, a large flood specific excess, or difficulty obtaining flood cover at all. Where a mainstream insurer declines, the property may fall into the territory covered by non standard home insurance in Ireland, which exists precisely for properties that standard underwriting will not take.
How to make your home more resilient to flooding
The realistic goal is not a flood proof house. It is reducing how much water gets in and how much damage it does when it does.
Low cost, do first:
- Keep gutters, downpipes, gullies and drains clear
- Protect air bricks with covers
- Seal around cable and pipe entry points
- Keep valuables and documents above likely flood level
- Know how you would move cars, pets and possessions to higher ground
Moderate cost, where risk justifies it:
- Demountable flood barriers for doors and flood gates for gateways
- Non return valves on drainage to stop sewage backflow
- Raised thresholds at vulnerable entrances
- Water resistant materials in ground floor rooms, for example tiled rather than timber floors
Higher cost, higher risk properties only:
- Raising electrical sockets and consumer units above flood level
- Replacing plasterboard with water resistant board on ground floors
- Sump and pump systems where groundwater is persistent
Government guidance for households also recommends flood barriers, flood gates and sealing vulnerable areas where appropriate.
Flood barriers or sandbags: which is better?
Sandbags are widely used and widely overrated. They filter water rather than block it, they are heavy and slow to deploy, they are contaminated once wet, and they need replacing after every event.
Purpose made demountable barriers seal against the door frame, deploy in minutes, store flat and last for years. They cost considerably more per unit and need the fixings installed in advance.
For a property with genuine, repeated flood exposure, barriers are the better investment. For a one off warning where nothing is installed, sandbags are better than nothing. Buying barriers after the first flood rather than before is the pattern most homeowners follow, and it is the expensive way round.
Storm damage: the risk homeowners most underestimate
Storms cause damage far from any flood zone, and storm claims are the most common weather claims on Irish home policies.
Before each storm season, check:
- Roof tiles, ridge tiles and flashing
- Gutters, downpipes and valleys
- Chimneys and chimney pots
- External doors, windows and seals
- Fences, gates and garden walls
- Trees close to the property, particularly dead or overhanging limbs
- Sheds, garden structures and anything loose outdoors
Small maintenance problems become expensive under severe weather, and there is an insurance dimension. Policies cover sudden storm damage, not deterioration. An insurer that finds a roof was already failing can treat the damage as wear rather than storm, and decline. Maintenance is not only about preventing damage, it is about keeping the claim valid.
One point people miss: if a tree or flying debris damages your car rather than your house, that is a motor claim, not a home claim. It falls under comprehensive motor insurance, and how it affects your premium is covered in our guide to car insurance claims in Ireland. Moving vehicles before a storm or flood protects both the car and your claims record.
Damp, humidity and mould: the damage nobody claims for
Higher average humidity and wetter winters push Irish homes toward condensation and mould, and this is the damage that does not get claimed because it is gradual rather than sudden.
It also interacts badly with retrofitting. Making a house more airtight without upgrading ventilation traps moisture inside it. Homes that were draughty and dry can become sealed and damp, and the result is mould growth, poor indoor air quality and damage to plaster and timber.
Practical measures:
- Upgrade ventilation whenever you upgrade airtightness, not afterwards
- Use extract ventilation in bathrooms and kitchens and actually run it
- Keep trickle vents open rather than taped shut
- Watch for rising damp at ground level, particularly where external ground levels have built up above the damp course
- Check that insulation work has not blocked eaves ventilation in the attic
Insurance will not fund any of this. Gradual damp, mould and condensation are excluded from virtually every home policy. That makes it purely a maintenance issue, which is exactly why it gets ignored until it is structural.
Older, period and stone built homes
Ireland’s older housing stock behaves differently under climate stress, and standard advice can actively damage it.
Traditional solid wall construction with lime mortar is designed to absorb moisture and release it. Sealing it with cement render or impermeable insulation traps water in the wall, which accelerates decay rather than preventing it. Wetter conditions make this worse, not better.
For a period or stone property:
- Use breathable materials, lime based mortars and renders, and vapour open insulation
- Repoint with lime, not cement
- Prioritise roof, rainwater goods and ground drainage over wall insulation
- Take specialist advice before any fabric upgrade
Older, listed, thatched and unusual construction properties also sit outside standard home insurance underwriting. If you have been declined or heavily loaded, non standard home insurance in Ireland covers how those risks are placed.
Garden, drainage and nature based protection
What happens outside the walls decides how much water reaches them.
Permeable paving. Replacing solid concrete or tarmac driveways with permeable surfaces, gravel or permeable block paving lets rainfall soak away rather than run toward the house. Hard surfacing front gardens is one of the most common causes of localised surface water flooding.
Sustainable drainage. Rain gardens, soakaways, swales and water butts hold and slow runoff. Even a water butt on each downpipe takes load off the drain during peak rainfall.
Trees and windbreaks. Native species such as hawthorn, holly, rowan, birch and Scots pine work as windbreaks and reduce wind loading on the building. Plant them away from foundations and drains, and keep mature limbs away from the roofline.
Ground levels. Make sure soil, decking and paving slope away from the house and sit below the damp course. Raised ground levels against a wall are a very common and very avoidable source of damp.
These measures are cheap relative to structural work, and they address the surface water risk that is growing fastest.
Energy efficiency and retrofit: what to do first
Protecting a home against climate change is partly about defending it from weather and partly about reducing what it consumes.
The Sustainable Energy Authority of Ireland recommends insulation, improved windows and doors, heat pumps, heating controls, solar technology and ventilation improvements, and government grant support is available for many of these measures through SEAI schemes.
Attic insulation or external wall insulation first?
Attic insulation is the better first move for most Irish homes. It is far cheaper, it can often be done in a day, it delivers the largest heat loss reduction per euro spent, and it also reduces overheating in summer by slowing heat gain through the roof.
External wall insulation delivers more total improvement but costs many times more, needs scaffolding, changes the external appearance and is unsuitable for solid wall period properties without specialist design.
Sensible order for a typical Irish house: attic insulation, then draught proofing with matched ventilation, then heating controls, then windows and doors, then walls, then heat pump or solar. Installing a heat pump in a poorly insulated house is the most common expensive mistake.
Tell your insurer about significant upgrades. Solar panels, heat pumps, EV chargers and battery storage all add value and change the risk. If they are not declared, they may not be covered.
Will global warming make home insurance more expensive in Ireland?
Probably, and it is already happening, though climate is one factor among several.
Three pressures push premiums up. Claims frequency and severity rise as storms and floods increase. Rebuild costs rise with construction materials, labour and professional fees, which raises the sum insured before any risk factor is applied. And reinsurance, which is what insurers buy to protect themselves against catastrophe events, has become more expensive globally.
The more serious risk is not price, it is availability. In high flood risk locations the question stops being what flood cover costs and becomes whether any insurer will offer it. That is a property value problem as well as an insurance problem, because a house that cannot be insured is difficult to mortgage and therefore difficult to sell.
Our guide to home insurance cost in Ireland sets out the full picture of what is moving premiums. The practical response is to reduce the risk you present, document the resilience work you have done, and review the market properly at renewal rather than accepting the invitation.
Review your home insurance before you need it
There is no “global warming” section in a home insurance policy. Policies cover specified insured events, and what matters is which events, at what limits, with which exclusions.
Buildings insurance covers the structure. Contents insurance covers belongings. What you need to confirm at renewal:
- Is flood damage covered, and is there a separate flood excess?
- Is storm damage covered, and does it extend to fences, gates and gardens, which are often excluded or sub limited?
- Are outbuildings, sheds and garages included?
- Is alternative accommodation covered if the house becomes uninhabitable?
- Is the buildings sum insured enough to rebuild at today’s costs?
- Is the contents sum insured still realistic?
- Have any exclusions, excesses or conditions changed since last year?
- Have you declared solar panels, a heat pump, an extension or an attic conversion?
The cheapest policy is rarely the best protected one, and weather claims are where that difference shows up. Our home insurance page sets out how cover is structured.
Make sure your rebuild cost is accurate
Confusing market value with rebuild cost is the most common and most expensive error in Irish home insurance.
Buildings cover is based on the cost of rebuilding the property, not what it would sell for. Construction materials, labour and professional fees have moved substantially, so a sum insured set five years ago is very likely too low now. If it is, an insurer can reduce a settlement proportionally, including on a partial claim, not just a total loss.
Review your sum insured whenever you:
- Extend, renovate or convert an attic or garage
- Make structural changes or add significant improvements
- Install solar, a heat pump or other permanent equipment
- Increase the value of your contents
- Have simply not reviewed it for several years
The Society of Chartered Surveyors Ireland rebuild calculator is the standard starting point. For period, stone or unusual properties, get a professional assessment, because standard calculators do not handle them well.
If you are a landlord, a renter, or buying your first home
Landlords. You carry the building risk and the tenant carries their own contents. Storm and flood damage that makes a property uninhabitable also stops the rent, which is what loss of rent cover exists for. Standard home insurance does not cover a let property at all. See landlord insurance in Ireland for how that cover is structured.
Renters. You cannot retrofit a property you do not own, but you can take contents insurance, keep valuables off ground level in flood exposed properties, report maintenance issues in writing so there is a record, and know where the stopcock and consumer unit are. Your landlord’s policy covers the building, never your belongings.
First time buyers. Check the OPW flood maps before you bid, not after. Ask whether the property has ever flooded and whether a claim was made, because a claims history follows the address. Get an insurance quote before you sign, particularly for coastal, riverside, period or unusually constructed properties. A property that is difficult to insure is difficult to resell.
Holiday and second homes. A property left empty for long periods carries different risk, and a burst pipe or storm breach that goes undiscovered for weeks causes far more damage than one found the same day. Cover for these sits under holiday home insurance in Ireland, or unoccupied home insurance where the property will be vacant for an extended period.
Farms and rural properties. Outbuildings, sheds, stores and yards are often the most exposed structures on a rural property and are frequently underinsured or omitted entirely. Where a property has a working or commercial element, that exposure usually belongs under commercial insurance or business insurance for sole traders and SMEs rather than a household policy.
Create a home emergency plan
Insurance handles the financial consequences. Preparation reduces the damage in the first place.
- Know where to turn off electricity, gas and water, and make sure everyone in the house does
- Keep passports, deeds, policy documents and photographs above likely flood level or backed up digitally
- Photograph each room and your valuables now, because claims move much faster with a before record
- Sign up for Met Eireann weather warnings
- Before a warning: secure loose outdoor items, clear gullies, charge devices, move cars to higher ground
- Keep your insurer’s emergency claims number somewhere you can reach without the internet
Protecting your home is risk management, not prevention
No homeowner can stop global warming or remove weather risk entirely. What you can control is exposure, maintenance, resilience and cover.
A well maintained home with accurate, appropriate insurance is in a fundamentally different financial position after a storm or flood than an identical house with a five year old sum insured and an unchecked policy. That gap is the whole point.
Protect your home with expert advice from Money Maximising Advisors
Climate related risk is now a standing consideration for Irish homeowners. Between storm damage, flooding and rising rebuild costs, the difference between adequate and inadequate cover only becomes visible when you claim.
Money Maximising Advisors is an independent financial advisory and insurance brokerage based in Galway, regulated by the Central Bank of Ireland, reference C154250. We can review your home insurance and tell you whether the cover genuinely fits your property, including buildings and contents limits, flood and storm protection, exclusions, excesses and whether your rebuild figure still stands up. We also arrange the wider general insurance needs that sit alongside it.
If you are reviewing your home insurance, or you are concerned about how climate risk affects your property, talk to our advisers.
Frequently Asked Questions (FAQs)
1. Does home insurance cover climate change damage?
There is generally no specific “global warming” section of a home insurance policy. Instead, policies cover particular insured events, such as storm or certain types of water damage, subject to their terms, conditions and exclusions.
2. Does home insurance cover flooding in Ireland?
Flood cover depends on the individual policy and the property’s circumstances. Some properties in higher-risk locations may face exclusions, restrictions or difficulty obtaining certain types of cover. The availability of cover should therefore be checked before relying on a policy.
3. How can I check if my home is at risk of flooding?
The OPW provides flood maps and location-specific information through its national flood information resources. Checking these maps can be a useful first step when assessing your property’s exposure to flooding.
4. How can I protect my home from flooding?
Start with basic maintenance such as clearing gutters and drainage systems. Depending on the property’s risk, additional measures may include flood barriers, flood gates, non-return valves and adapting vulnerable areas of the property.
5. Does home insurance cover storm damage?
Storm damage is commonly an insured risk under home insurance, but the precise protection depends on the policy. Roofs, windows and other parts of the building may be covered, while some external items can have different limits or exclusions.
6. Can climate change make home insurance more expensive?
Climate-related risks can contribute to higher claims costs, while broader factors such as construction costs, labour and inflation can also influence premiums. The impact varies between properties and insurers.
The best approach is to compare policies based on both price and level of cover, rather than focusing solely on the premium.
7. Should I review my home insurance every year?
Yes. An annual review is a good opportunity to check your buildings sum insured, contents cover, exclusions, excesses and any changes to your property. It is particularly important to review your policy after renovations, extensions or significant purchases.
8. What is the best way to protect my home against global warming?
There is no single solution. A combination of risk assessment, preventative maintenance, flood and storm resilience, energy efficiency and appropriate home insurance provides a stronger overall strategy.
