# Structural Engineer for Cracks Dublin | Crack Inspection & Report > Structural engineer for cracks in Dublin: inspection, crack categorisation, cause diagnosis and a written report. Fixed fee before the visit. Call today. URL: https://structuralengineer.ie/structural-crack-inspection/ # Structural Engineer for Cracks in Dublin Most cracks are cosmetic. The job is finding the ones that aren't, naming the cause, and telling you plainly whether to fill, watch or fix. [Call 01 270 9764](tel:+35312709764) [Get a fixed fee](#quote) _Image: Crack-width gauge held across a stepped crack in rendered blockwork on an Irish house_ - BRE Digest 251 damage categories - I.S. 398-1:2013 pyrite protocol - I.S. EN 1997-1 Geotechnical design - TGD A Structure Last updated: 14 October 2026 · Reviewed by Joachim Louw, CEng MIEI [StructuralEngineer.ie](https://structuralengineer.ie/) is a Chartered practice providing a structural engineer for cracks in homes across Dublin, Kildare, Meath and Wicklow. Joachim Louw (CEng MIEI) inspects the cracking, grades it by width and pattern, works out the cause (shrinkage, thermal movement, settlement, subsidence, heave or pyrite) and puts the answer in a written report: what it is, whether it is getting worse, and what to do. Irish guides put an initial crack or subsidence investigation and report at about €600–€1,200, with monitoring extra if needed. Your fee is fixed in writing before the visit. ## What happens on the first visit On the first visit the engineer maps every crack, not just the one that worried you. Width, direction, taper and location together point to the cause. Stepped cracks at corners mean something different from vertical cracks at a window or horizontal cracks at floor level. - Measure crack widths and record whether they taper, and in which direction - Map the cracks on each elevation and inside to see the pattern - Check doors and windows for sticking, and floors for slope or lift - Look for trees, drains, leaking gutters and recent extensions near the cracking - Ask when the cracks appeared and whether they open and close with the seasons - Check for previous repairs that may have been filled or plastered over ## How cracks are graded Engineers in Ireland and the UK grade visible crack damage using the BRE Digest 251 categories, from 0 (hairline, negligible) to 5 (very severe, major repair). Categories 0 to 2, up to about 5 mm, are usually cosmetic and can be filled and redecorated. Category 3, about 5 to 15 mm, needs opening up and some repair work. Categories 4 and 5, above about 15 mm, involve structural repair. Width is only half of it. A 2 mm crack that has grown over a winter matters more than a 4 mm crack that hasn't moved in twenty years. Where the cause isn't clear, tell-tales or measured points are fixed across the cracks and read over several months. ## Common causes in Dublin houses Shrinkage and thermal cracking: fine vertical cracks in blockwork, at window corners and at junctions of different materials. Common in newer houses as the blockwork dries out. Usually cosmetic. Settlement and junction cracking: cracks where an extension meets the original house, because the two foundations moved differently. Often stable once the new part has settled. Subsidence and heave: stepped cracks wider at the top or bottom, doors sticking, worse after dry summers. Linked to clay soils, trees and leaking drains. Pyrite heave: in 1990s–2000s houses in north Dublin, Meath, Kildare and Offaly, reactive hardcore under the ground-floor slab expands. Cracks show in internal walls just above floor level, and the slab lifts. The assessment route is set out in I.S. 398-1. ## Insurance, buying and selling with cracks If you suspect subsidence, tell your insurer early. Most home policies cover subsidence with a specific excess, often €1,000–€2,500. The insurer will appoint its own engineer, and an independent report gives you a basis to discuss its findings. Disputes often turn on whether the damage is 'subsidence' or excluded 'settlement'. If you are buying, a crack report before contracts are signed tells you what you are taking on. If you are selling, a report on known cracks can stop a sale stalling when the buyer's surveyor finds them. Not sure if yours is serious? Try the [crack assessment checklist](https://structuralengineer.ie/tools/structural-crack-assessment/), or read [are cracks in walls serious?](https://structuralengineer.ie/guide/when-are-cracks-in-walls-serious/) ## What's included - Inspection by a Chartered Engineer - Crack mapping inside and out - BRE Digest 251 damage category for each area - Diagnosis of the likely cause - Check of trees, drains and nearby works - Monitoring plan where the cause is unclear - Written report with clear recommendations - Repair specification if repair is needed Typical market range: **€600–€1,200** (crack investigation and report; monitoring extra where needed). Source: Banrach subsidence cost guide, 2026. Fixed fee confirmed in writing before the visit. ## Fill and paint, a builder's opinion or an engineer's report Cracks get covered up all the time. The question is what you can show an insurer, a buyer or yourself. | Check | Fill and paint | Builder's opinion | Chartered Engineer's report | | --- | --- | --- | --- | | Cause identified | No | guess | Yes | | Damage category recorded | No | No | Yes | | Movement monitored where needed | No | No | Yes | | Report an insurer or buyer will read | No | No | Yes | | Repair specified to fix the cause | No | sometimes | Yes | | Cracks that come back | likely | possible | addressed | Sources - [Engineers Ireland: cracking and structural movement in Irish low-rise masonry buildings](https://www.engineersireland.ie/News/cracking-and-structural-movement-in-irish-low-rise-residential-masonry-buildings) - [Banrach: subsidence costs in Ireland](https://banrach.ie/subsidence-cost-ireland/) - [Zurich Ireland: subsidence, cracking and movement claims](https://www.zurich.ie/-/media/project/zurichie/zurichmainsite/files/zurich-home-claims---my-home-has-subsidence-cracking-movement.pdf) - [Housing Agency: Pyrite Remediation Scheme](https://housingagency.ie/news-events/pyrite-scheme-extended-number-homes-remediated-reaches-2000) Talk to the engineer 01 270 9764 Mon–Fri 8:00–18:00. Callback the same working day. [Call now](tel:+35312709764) Fixed fee confirmed in writing before the visit. Standards we design to - BRE Digest 251 damage categories - I.S. 398-1:2013 pyrite protocol - I.S. EN 1997-1 Geotechnical design - TGD A Structure Before you book: costs and rules - [Are Cracks in Walls Serious? How to Tell](https://structuralengineer.ie/guide/when-are-cracks-in-walls-serious/) - [Cracks in a New Build House: Normal or a Warranty Claim?](https://structuralengineer.ie/guide/new-build-cracks-homebond/) - [Subsidence Insurance Claim in Ireland: How It Works](https://structuralengineer.ie/guide/subsidence-insurance-claim-ireland/) - [How Much Does a Structural Engineer Cost in Dublin? (2026)](https://structuralengineer.ie/guide/structural-engineer-cost-dublin/) How the job runs ## How a crack inspection works - 01 ### Call and fixed quote Send photos of the cracks if you can. You get a fixed fee in writing. - 02 ### Inspection Cracks are mapped, measured and graded, and the likely cause is identified. - 03 ### Report A written report covering category, cause, whether it's moving, and what to do. - 04 ### Monitor or repair Monitoring where the cause is unclear, or a repair specification your builder can price. What the work involves ## Typical stages on site Illustrative images of typical work, not photographs of specific client projects. _Image: Crack tell-tale monitor fixed across a diagonal crack in an internal plaster wall_ Crack tell-tale monitor fixed across a diagonal crack in an internal plaster wall _Image: Vertical crack at the junction between a rear extension and the original house_ Vertical crack at the junction between a rear extension and the original house _Image: Trial pit exposing a concrete strip foundation and boulder clay beside a Dublin house_ Trial pit exposing a concrete strip foundation and boulder clay beside a Dublin house _Image: Door frame out of square with a diagonal crack running up from its corner_ Door frame out of square with a diagonal crack running up from its corner ### Typical before and after _Image: Before: stepped crack running through the render from a window corner_ Before Illustrative _Image: After: the same wall corner with the crack repaired and the render made good and painted_ After Illustrative Worried about a crack? Get it graded and the cause named. Fixed fee confirmed in writing before the visit. [Call 01 270 9764](tel:+35312709764) [Request a fixed fee](#quote) Questions ## Cracks in walls: common questions **When should I worry about a crack in my wall?** Get it looked at if it is wider than about 5 mm, stepped through the blockwork, wider at one end than the other, growing, or coming with doors and windows that start sticking or floors that slope. Hairline cracks at window corners, or where plaster meets a different material, are usually shrinkage or thermal movement and are cosmetic. **Are cracks in a new-build house normal?** Fine shrinkage cracks in the first year or two are common as blockwork and plaster dry out, and are usually cosmetic. Wider, stepped or growing cracks are not normal. New homes are usually covered by a structural warranty such as HomeBond or Premier Guarantee, so report significant cracks to the builder and warranty provider early. **Will my insurance cover cracks?** Only if the cause is an insured event, typically subsidence, heave or landslip, and policies carry a specific subsidence excess. Shrinkage, settlement of new work and wear are usually excluded. The insurer will send its own engineer. An independent report helps you understand the cause before that conversation. **How long does crack monitoring take?** Where the cause isn't obvious, monitoring usually runs through at least one seasonal cycle, often three to twelve months, because clay-related movement opens cracks in late summer and closes them in winter. Tell-tales or measured points are fixed across the cracks and read at intervals. **What areas do you cover?** Dublin and the Greater Dublin Area (Kildare, Meath and Wicklow). Site visits are booked from the Blackrock office. Site visit usually within 5 working days. ## Related services [### Subsidence Surveys Investigation, monitoring and insurer-ready reports when the ground is moving.](https://structuralengineer.ie/subsidence-survey/) [### Pyrite Assessment Building condition assessment to I.S. 398-1 for homes built on suspect hardcore.](https://structuralengineer.ie/pyrite-assessment/) [### Structural Surveys Pre-purchase structural survey with clear limits and a written report before you sign.](https://structuralengineer.ie/structural-survey/) Next step Get a fixed fee for a crack inspection Call [01 270 9764](tel:+35312709764), or send the details and we'll call you back. Request a fixed engineering fee Prefer to talk? [Call 01 270 9764](tel:+35312709764). A live person answers during office hours.