Spray Foam Attic Insulation Removal & Compliant 300mm Roof Re-Insulation
If spray foam was sprayed directly onto the underside of your roof tiles, slates, or sarking felt, it can trap moisture against roof timbers and block property sales or mortgage drawdowns. We strip rafter foam cleanly and install compliant, ventilated 300mm mineral wool.
Spray Foam Removal & Attic Re-Insulation Costs (2026)
Price depends on whether the foam is soft open-cell or hard closed-cell polyurethane and whether it is bonded directly to slates/tiles or breathable membrane.
| Scope of Works | Typical 3-Bed Semi-D | Typical 4-Bed Detached / Bungalow | Documentation Included |
|---|---|---|---|
| Open-Cell Spray Foam Strip & Bagged Disposal | €2,400 – €3,400 | €3,200 – €4,600 | Before/after photos + Protimeter timber moisture log |
| Closed-Cell Foam Strip from Rafters & Felt | €3,400 – €4,800 | €4,500 – €6,400 | Full rafter scrape + felt/slate condition report |
| Re-Insulate Ceiling to 300mm + Eaves Vent Trays | €1,950 – €2,500 (−€1,300 SEAI grant if eligible) | €2,350 – €3,100 (−€1,500 SEAI grant if eligible) | SEAI Declaration of Works + Post-Works BER |
Why Banks & Surveyors Flag Rafter Spray Foam
When polyurethane foam encapsulates the sides and underside of timber roof rafters without a 50mm ventilated air gap beneath the tile batten/felt, any roof leak or interstitial condensation is held directly against the structural softwood. Stripping the foam back to bare timber restores cross-ventilation and satisfies bank valuation surveyors and equity-release underwriters.
Frequently Asked Questions: Spray Foam Removal & Roof Venting
Can I claim the €1,300–€1,500 SEAI Attic Grant when replacing removed spray foam?
Yes, provided the property was built before 2011 and has never previously claimed an SEAI Attic Insulation Grant on that MPRN.
Do you provide photographic and timber moisture proof for our solicitor or mortgage bank?
Yes — every removal job includes dated before-and-after rafter photographs, waste transfer disposal documentation, and calibrated timber moisture readings across the roof trusses.
Related Services & Guides
- Pumped Bonded-Bead Cavity Wall Insulation — €400–€1,200 net after grant
- 300mm Attic Insulation, Raised Walkways & SEAI Grants — €600–€1,500 net after grant
- External Wall Insulation (The Wrap) & €8,000 SEAI Grant — Up to €8,000 SEAI Grant
- Internal Wall Insulation (Dry-Lining) & €4,500 SEAI Grant — €1,500–€4,500 SEAI Grant
- Complete 2026 SEAI Home Insulation Grant Matrix & Rules — Up to €11,050 Combined
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