External Wall Insulation Cost Calculator
External Wall Insulation Cost Calculator . The first table calculates the approximate pay back times for external solid wall insulation and assumes an installation cost of £ 11,000 for the smaller house about £ 15,000 for the larger house. So, insulation of small apartments will cost in the region of £9,500, while insulating a large detached house can come to around £25,000. Rainscreen & Cavity Wall Insulation ROCKWOOL from www.rockwool.com The chart below provides attic insulation cost estimates based on the. A 450mm stone wall will be virtually the same, and a brick cavity wall about 1.50w/m². Actual costs will depend on job size, conditions, and options.