Nordic pine vs solid oak interiors & RAL aluminium exteriors
Around 80% of alu-clad windows installed in Ireland use finger-jointed, knot-free Scandinavian slow-grown redwood pine on the inside (either factory-painted in white/grey or finished in a clear natural UV lacquer), while around 20% upgrade to solid European oak (+18% to 25%).
How knot-free engineered pine prevents resin bleed, when solid oak is worth the extra budget, and how exterior RAL powder-coating works.
Free, no obligation. One vetted alu-clad window specialist covering your county replies.
Calculate your alu-clad window package cost
Pick the interior timber finish, your approximate package size, and whether your project is a new self-build or a pre-2011 SEAI grant retrofit.
Estimated supply & fit guide
€17,700 to €33,100
Supply & fit with 13.5% VAT · Triple glazed (Uw 0.78–0.85 W/m²K)
Guide price for a 14-window 4-bed detached or self-build package with solid European oak hardwood inside and powder-coated RAL aluminium outside (+18% to 25%). Includes 44mm–52mm triple glazing, warm-edge spacers and full installation.
Request a written quotePainted pine, clear-lacquered pine and solid oak compared
| Interior timber option | Look & grain character | Best interior design match | Cost impact |
|---|---|---|---|
| Factory-painted Nordic pine (RAL 9010 / 9016 / 7047) | Smooth satin architectural paint finish; no knots or resin rings | Bright contemporary kitchens, white/off-white plastered walls | Base guide price (0% extra) |
| Clear or white-washed lacquered Nordic pine | Warm pale Scandinavian softwood grain with UV anti-yellowing filter | Birch ply kitchens, Nordic / coastal interiors, Scandi self-builds | +4% to 6% |
| Solid European oak (clear or oiled finish) | Rich, tight hardwood grain with deep honey-oak warmth | Oak floors, oak staircases & traditional stone/country builds | +18% to 25% |
How finger-jointed laminated timber stops warping and resin bleed
Anyone who remembers 1970s pine windows bleeding sticky yellow resin knots through white paint will appreciate how modern Scandinavian joinery is engineered:
- Heartwood slow-grown Nordic pine: Harvested from cold-climate FSC/PEFC forests where trees grow slowly with tight, dense growth rings.
- 100% knot removal & finger-jointing: Every knot and resin pocket is optically scanned and cut out before the clear timber lengths are finger-jointed and laminated into 3-ply or 4-ply opposing-grain sections. Because the grain directions oppose each other, the sash cannot twist or bow.
- Water-based microporous spray finishes: Applied in robotic factory spray booths before the glass and outer aluminium cladding are fitted, giving a furniture-grade finish.
Polyester powder-coated RAL and anodised exterior skins
On the outside, the extruded aluminium cladding is stove-enamelled in any classic RAL colour (most commonly RAL 7016 Anthracite Grey, RAL 9005 Jet Black, RAL 7039 Quartz Grey, RAL 7032 Pebble Grey or Bronze Anodised) in a matt 30% gloss or fine-textured granite finish. For homes within 5 km of the sea, specify Qualicoat Seaside marine pre-treatment.
What alu-clad windows cost in Ireland
Our supply-and-fit price guide per window, per square metre and for full retrofit or self-build house packages.
| Job | Typical cost | What moves the price |
|---|---|---|
| Standard alu-clad casement or tilt-and-turn window (triple glazed) | €1,100 to €2,000 per window | Uw 0.78–0.85 W/m²K · engineered Nordic pine + powder-coated alu |
| Large fixed picture or floor-to-ceiling alu-clad screen | €1,400 to €2,800 per opening | 44mm–52mm toughened triple unit · slim 55mm frame |
| Alu-clad lift-and-slide patio door (2.4m–3.6m) | €4,200 to €7,800 | Low-threshold fibreglass/aluminium track · up to 300kg sash gear |
| Alu-clad French patio doors or entrance door | €2,800 to €4,900 | Multi-point security locking · matching internal timber finish |
| 3-bed semi-detached full house (8–10 alu-clad windows) | €11,000 to €20,000 | After €3,000 SEAI grant (if pre-2011): €8,000 to €17,000 |
| 4-bed detached / self-build package (12–16 windows + sliding door) | €16,500 to €32,000 | After €4,000 SEAI retrofit grant: €12,500 to €28,000 |
| Solid European oak or ash interior upgrade (vs Nordic pine) | +18% to 25% | Clear-lacquered hardwood interior with extruded aluminium exterior |
| Per square metre installed (triple-glazed alu-clad) | €1,000 to €1,500 per m² | Includes airtightness tapes, compriband and 13.5% supply-and-fit VAT |
Real examples and installation detail
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Questions homeowners & self-builders ask
Can I paint over clear-lacquered pine or painted pine alu-clad windows years later?
Yes — that is one of the best advantages of real wood inside. After 15 or 20 years, you can lightly key the interior timber with fine sandpaper and brush on two coats of water-based acrylic joinery paint in any colour you like.
Does clear-lacquered Nordic pine turn orange in sunlight?
Modern Scandinavian factories add a UV-blocking pigment (or subtle 5% white-wash tint) to the clear water-based lacquer, which stops raw pine yellowing in south-facing rooms and keeps the pale Nordic timber tone.
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