ICF Block Sizes and Specs
Detailed dimensions, core widths, overall widths, and block package prices for leading ICF systems in Ireland.
Standard ICF block sizes in Ireland feature form lengths of 1200mm to 1500mm and heights of 300mm to 450mm. Structural core widths range from 150mm to 200mm, with the popular Amvic 280mm block providing a 150mm concrete core and 130mm of total EPS insulation.
ICF Block Dimensions & Pricing Specifications
| ICF Block System | Length | Height | Core Width | Overall Width | Typical Block Price |
|---|---|---|---|---|---|
| Amvic 280mm Block | 1200 mm | 300 mm | 150 mm | 280 mm | €28.50 - €34.00 |
| Amvic 350mm Block | 1200 mm | 300 mm | 200 mm | 350 mm | €34.50 - €41.00 |
| BuildBlock 150mm Core | 1219 mm | 406 mm | 152 mm | 279 mm | €29.00 - €35.00 |
| Nudura 150mm Core | 2438 mm | 457 mm | 152 mm | 286 mm | €58.00 - €70.00 |
| ThermoHouse 150mm Core | 1000 mm | 300 mm | 150 mm | 300 mm | €30.00 - €36.00 |
| Castleforms 150mm Core | 1200 mm | 300 mm | 150 mm | 280 mm | €28.00 - €33.50 |
What are the standard ICF block sizes in Ireland?
Standard ICF block sizes range from 1200mm to 2438mm in length, with wall heights of 300mm to 457mm. Standard residential properties utilize a 150mm structural concrete core thickness to meet Irish structural standards.
Selecting the appropriate block dimensions affects raw concrete volume requirements. Self builders should check system prices in our icf blocks ireland pricing guide and review installation details in our external wall insulation cost comparison.
How does the Amvic 280mm block specification perform?
The Amvic 280mm block features a 150mm concrete core and 65mm of high density EPS insulation on both sides. This block size provides a U-value of 0.24 W/m²K, which serves as the structural baseline for many Irish homes.
For projects requiring lower U-values, Amvic also manufactures a 350mm block option featuring thicker outer EPS. The main ICF systems available in Ireland: Amvic, Castleforms, BuildBlock, ThermoHouse, Nudura. All systems must be erected by qualified contractors. Vetted installers can be found in our icf installers ireland listing.
How do core widths and overall widths affect ICF structures?
Structural core widths range from 150mm to 200mm, with the overall block width determining the final thickness of your finished wall. Thicker overall blocks provide higher thermal resistance but require wider foundations.
Understanding these dimensions is critical when detailing window openings. Aluminium cills for ICF are made to measure by Cills.ie with app based measuring so profiles update live on site. For the Amvic 280mm block detail: cill depth B 265mm at a 7 degree fall, 5mm weep holes each side, DPC trimmed after full finish render not at basecoat, low modulus MS polymer sealant only, never acetoxy silicone, welded factory formed end caps, 15 to 20mm pressure equalisation void behind the cill upstand. Seven leak points exist at ICF window openings and the correct install follows a four step sequence. Always check the original icf window cills guide to secure these details.
Frequently Asked Questions
Download the ICF Window Cill Field Guide
Get our complete technical manual covering window bucks, waterproofing, and Cills.ie aluminium profile configurations for all ICF block sizes.