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Choosing the best exterior paint for Irish weather matters more on the North Dublin coast than almost anywhere else in the country, because houses in Balbriggan, Skerries and Rush take salt-laden wind, driving rain and long damp spells in the same season. The wrong coating traps moisture and blisters within two winters; the right one breathes, sheds water and still looks clean five years later.
Breathable masonry coatings beat waterproof ones
Irish render is nearly always slightly damp somewhere. A film-forming 'waterproof' coating seals moisture inside the wall, and the first hard frost lifts it off in sheets. A breathable, water-repellent masonry paint does the opposite: it stops rain driving in while letting vapour escape, which is why it survives on coastal walls that fail every other product.
On previously painted render we check what is already there. Old pliolite or a heavy plastic coating usually has to come off in the failing areas rather than being covered, or the new coat simply peels with the old one.
Timber, doors and windows near the sea
Salt is abrasive and hygroscopic — it holds moisture against timber. Exterior woodwork within a couple of kilometres of the coast needs a full system: sand back to sound timber, treat any rot, prime bare wood, and use a flexible exterior trim paint that moves with the timber rather than a hard gloss that cracks along the grain.
Front doors take the most direct weather of anything on the house. We usually recommend a proper exterior door paint with UV resistance, applied on a dry, mild day so it cures rather than skinning over damp.
When to paint outside in Ireland
The realistic exterior season runs from late April to early October, and even then it is about the forecast rather than the calendar. Surfaces must be dry, air temperature reliably above about 8°C, and no rain due within the drying window. We would rather move a job by three days than put a coat onto a wall that is still wet from Monday.
- —Wash down and treat algae or mould first
- —Spot-prime bare render and bare timber
- —Two coats, applied within the product's recoat window
- —Avoid painting in direct hot sun — it skins the surface
Frequently asked questions
- How often should a house be painted outside in Ireland?
- Render typically wants recoating every 7-10 years inland and closer to 5-7 years on the coast. Timber and front doors usually need attention sooner, often every 3-4 years in exposed positions.
- Can you paint render that has cracks?
- Yes, but the cracks are repaired first. Hairline crazing can be bridged with the right coating; structural cracks need filling and, in some cases, a flexible repair before any paint goes on.