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Loft Insulation Cost Calculator
If you're planning to insulate your loft, our loft insulation cost calculator gives you a quick estimate based on your loft size, insulation type, and location. For a full price breakdown, see our loft insulation cost guide.
Enter a few details below to get your estimate, then use it to help plan your budget before you speak to local installers.
Loft Insulation Cost Calculator
Table of Contents
How to Use the Loft Insulation Cost Calculator
Our loft insulation calculator gives you a fast, rough estimate of loft insulation costs based on a few key details about your loft.
- Loft Size — Enter the approximate length and width of the area you want insulated. Exact measurements aren't essential, but the more accurate your figures, the more accurate your estimate.
- Insulation Type — Choose from blanket, loose-fill, or blown insulation. Each has a different material cost and installation time.
- Access — Indicate how easy it is to access your loft. Tight hatches or low headroom can increase labour time.
- Location — Select your region, as labour costs vary across the UK. London and the South East tend to be the most expensive.
Once you've entered these details, select "Calculate" to see your estimated cost. This figure is a guide only. For an accurate price, request quotes from local installers.
Why Do We Include Labour Costs?
Labour costs are included in our estimate because installation quality has a big impact on how well loft insulation performs. A professional installer will fit the material to the correct depth without leaving gaps, which helps avoid heat loss and issues like trapped condensation.
What Can Affect Your Estimate
A few things can cause your actual quote to differ from the calculator's result:
- The condition of your existing loft, including whether old insulation needs removing first.
- Any extras you add, such as loft boarding, pipe lagging, or a new loft hatch.
- How easy the loft is to access, as tight hatches or low headroom can increase labour time.
Ready to Get a Quote?
Once you've used our free loft insulation calculator, the next step is to get quotes from local loft insulation installers. With MyJobQuote, you can request up to three free, no-obligation quotes and compare exactly what's included in each one.
Last updated by MyJobQuote on 5th August 2026.
