Attic Insulation Service Dublin

Here are the key steps to insulate an attic in Ireland: 1) Clear attic floor of debris. 2) Lay insulation between joists, using 300mm mineral wool rolls. 3) Ensure no gaps and fit tightly. 4) Add cross-layers over joists. 5) Install attic stair insulation box. 6) Seal any remaining gaps/penetrations. Rigid insulation boards suit irregularly-shaped spaces. Vapour-permeable membranes prevent condensation.

Insulating an attic in Ireland typically costs €25-€35 per square metre for material and labour. For a semi-detached house with a 35m² attic, costs range €875-€1,225. Recommended insulation levels are 300mm mineral wool, providing U-values below 0.16 W/m².K, meeting Irish building regulations. Up to 30% of heat is lost through an uninsulated roof. Properly insulating saves €300-€600 annually on heating bills for a semi-detached home. Grants from Sustainable Energy Authority of Ireland cover 80% of insulation costs up to €3,400 for homeowners with older properties.

For attic insulation in Ireland, building regulations specify a minimum 300mm (12 inches) of mineral wool insulation between and over joists. This achieves U-values below 0.16 W/m².K required for new builds and renovations. Older properties need at least 200mm insulation installed. Insulation levels are measured by their thermal resistance or R-value – 300mm mineral wool equates to an R-value of around 8. The higher the R-value, the better the insulation performance in reducing heat loss through the attic.

1) Use foam pipe insulation with a minimum 25mm thickness and seal joints with insulation tape. 2) Insulate both hot and cold water pipes. 3) Ensure insulation extends past walls into heated areas. 4) For pipes running through unheated spaces like attics, use higher R-value insulation like fibreglass at 38mm thickness minimum. 5) Seal any gaps around pipe penetrations with caulk or insulation. 6) Insulate entire plumbing run from water heater. 7) Check insulation annually and replace any degraded sections.

Yes, proper attic ventilation is crucial even when using spray foam insulation in Ireland. Key points:

• Spray foam creates an airtight seal, trapping moisture which can cause rot, mold and condensation without ventilation.
• Building regulations mandate at least 25,000mm² of ventilation area per 90m² of attic space with spray foam insulation.
• Soffit vents at eaves and ridge vents at peaks allow essential airflow.
• Vapor barriers like polyethylene sheeting are also recommended under spray foam.
• Lack of ventilation risks structural damage, decreased insulation performance, poor indoor air quality.
• At least 50mm unobstructed air gap above spray foam is needed for cross-ventilation.