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Spray Foam Removal Specialists

Spray Foam Removal
Castleknock

Professional spray foam insulation removal across Castleknock. Free inspection, written quote, no pressure tactics.

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Inspection
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Insured
Emergency
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25+ Years
Experience
Fully InsuredPublic & Employer
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★★★★★ 5 Star Reviews on Google

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25+Years Experience
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Castleknock homeowners trust Peak Roofing for spray foam removal. Spray foam roof insulation was widely applied in Irish homes from the 1980s through to the 2000s, marketed as an energy-saving measure for the attic space. Peak Roofing and Building carries out professional spray foam removal across Castleknock, covering both open-cell and closed-cell foam systems. Two types were commonly used: open-cell foam, which is soft and slightly permeable, and closed-cell foam, which sets hard and is completely impermeable to water vapour. Closed-cell foam in particular is the more serious problem — it creates a sealed vapour barrier across the underside of the roof structure, trapping moisture inside the roof void. Over time, that trapped moisture condenses and causes rot in the roof timbers beneath. The critical issue is that the foam physically encases the rafters, making it impossible for surveyors or structural engineers to see the condition of the timber underneath — which is precisely why so many lenders in Ireland and the UK will now decline to mortgage or remortgage a property until the foam has been professionally removed and the underlying timber structure assessed and certified.

Castleknock is an affluent north-west Dublin suburb with a semi-rural feel, characterised by large detached homes on mature wooded plots, quality 1980s and 1990s executive estates, and some modern new-build developments near the Phoenix Park. Properties in Castleknock are predominantly Large detached homes on mature plots along Castleknock Road, 1980s and 1990s executive semi-detached and detached estates, quality modern new-builds, and some period properties near the old village. Common roof issues we address here include natural slate deterioration on older prestige properties, lead valley failures on complex hipped rooflines, chimney repointing on larger homes, guttering blockages from mature deciduous trees, and moss accumulation on shaded north-facing pitches, spray foam insulation is an increasing issue in Castleknock properties. Our roofers understand the construction methods and typical materials used in Castleknock — every inspection is free and every job begins with a written quote.

Areas we cover in Castleknock: Castleknock Road, Carpenterstown Road, Auburn Avenue, Beechfield estate, Elmpark, Laurel Lodge and Carton Wood

View all Spray Foam Removal areas we cover →

Our Roofing Services

Recent Roofing Work in Castleknock

Before
After
Case Study
Slate Restoration – Castleknock Road
What we did
Replaced 38 deteriorated natural slates and repointed all ridges and hips on large 1960s detached property
Duration2 Days
Typical Cost€900 – €1,200
Photos coming soon
Case Study
Lead Valley Replacement – Auburn Avenue
What we did
Replaced two failed lead valleys on complex hipped roofline of 1990s executive detached
Duration2 Days
Typical Cost€850 – €1,000
Photos coming soon
Case Study
Guttering Replacement – Laurel Lodge
What we did
Full UPVC guttering and downpipe replacement on large detached — persistently blocked by mature oak trees
Duration1 Day
Typical Cost€550 – €650

Why Castleknock Homeowners
Choose Peak Roofing

  • Local, family run roofing company
  • Honest advice — no unnecessary replacements
  • Detailed roof inspection reports with photos
  • High quality materials & expert workmanship
  • Clean, tidy & respectful on every job
  • Fully insured for your peace of mind
  • Up to 25-year guarantee available
5 Star Reviews
"James and the team have done two different jobs for us. The first was to re-felt our roof and fix the flashing around the chimney and clear gutters which cleared up 2 substantial leaks that had been causing damage. He kept us updated with videos of the work throughout the day to show work complete and progress."
– Anne-marie Griffin

We Provide

  • Free Quotes
  • No Call-Out Charge
  • Written Quotations
  • Work Guaranteed
  • Emergency Callouts

Frequently Asked Questions

From €2,000 depending on roof size and foam thickness. Free inspection to assess scope before any commitment — we assess the foam type and coverage before providing a written quote.
Yes, in many cases. Most mainstream lenders in Ireland and the UK will not approve a mortgage or remortgage on a property with spray foam insulation in the roof until it has been professionally removed and the underlying roof timbers assessed and certified. If you are buying, selling or remortgaging a property in Castleknock and spray foam has been flagged, we can inspect, remove and provide a written structural report suitable for your solicitor and lender.
Open-cell foam is soft and slightly permeable — it is less likely to cause severe moisture problems but many lenders will still flag it. Closed-cell foam sets hard, is completely impermeable to water vapour, and creates a sealed barrier that traps moisture against the roof timbers, accelerating rot. It also bonds more strongly to surfaces, making removal harder and more labour-intensive. Both types are found in Castleknock properties built or renovated between the 1980s and early 2000s.
Spray foam looks like a yellowed or off-white foam coating applied to the underside of the roof rafters, visible from inside the attic. A quick look with a torch will usually reveal it immediately — the rafters will be partially or fully encased in foam. If you are unsure, we can carry out a free inspection at your Castleknock property.
Removal from a standard semi-detached in Castleknock typically takes 1–2 days depending on foam coverage and type. Once removed, we carry out a full visual and physical assessment of all exposed roof timbers, documented with photographs. Timbers in good condition are certified. Any rot or structural deterioration is noted in our written report, and we provide a separate quote for any remedial timber work required.
In Castleknock, the roofing problems we see most often are natural slate deterioration on older prestige properties, lead valley failures on complex hipped rooflines, chimney repointing on larger homes, guttering blockages from mature deciduous trees, and moss accumulation on shaded north-facing pitches. A free inspection is the best way to check whether any of these apply to your roof — call 085 782 8222 to arrange one.
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Areas We Cover

Blanchardstown Palmerstown Lucan Clonsilla Mulhuddart Dunboyne
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Need Emergency Roof Repairs?

We're available 24/7 for emergency callouts across Castleknock and the surrounding area. Based just 16km away in Sandyford.

085 782 8222 24/7 Emergency Line
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Get a Bird's-Eye View of Your Roof

Our drone surveys deliver high-resolution footage of every tile, ridge and chimney — no scaffold, no ladders, no disruption. Ideal for insurance claims, pre-purchase inspections and hard-to-access roof sections.

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Spray Foam in Your Roof? Get a Free Inspection Get a free roof inspection and honest advice from your local roofing experts.