Superglass Make Calculator
Professional Insulation Coverage & Thermal Performance Tool
Total Packs Required
12
2.27 m²K/W
£306.00
4.50 m²
Thermal Resistance Visualization
Comparison of your selected thickness R-value vs. Building Regs (Target: 4.5+)
| Thickness (mm) | R-Value (44 Make) | R-Value (40 Make) | R-Value (35 Make) |
|---|---|---|---|
| 100mm | 2.27 | 2.50 | 2.85 |
| 150mm | 3.40 | 3.75 | 4.28 |
| 200mm | 4.54 | 5.00 | 5.71 |
What is a Superglass Make Calculator?
A superglass make calculator is a specialized technical tool designed for builders, architects, and DIY enthusiasts to estimate the volume of Superglass mineral wool insulation required for a specific construction project. Unlike generic calculators, this tool integrates the specific thermal conductivity (lambda values) of Superglass products to provide accurate thermal resistance (R-value) data.
Using a superglass make calculator ensures that you do not over-order materials or, more critically, under-insulate your property, which could lead to failing building regulations. Whether you are working on a loft conversion using Superglass Multi-Roll 44 or a timber frame wall with Superwall 32, this calculator translates your floor area and chosen thickness into actionable procurement data.
Superglass Make Calculator Formula and Mathematical Explanation
The math behind the superglass make calculator involves three primary geometric and physical calculations. We first determine the coverage per pack based on standard manufacturing dimensions, then calculate the thermal performance.
1. The Packs Calculation
Total Packs = Ceiling/Wall Area ÷ Coverage per Pack. Because you cannot buy partial packs, the superglass make calculator always rounds the result up to the nearest whole number.
2. The R-Value Formula
Thermal Resistance (R) = Thickness (in meters) / Thermal Conductivity (λ). For example, Superglass Multi-Roll 44 has a λ-value of 0.044 W/mK.
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Area | Total surface area to cover | m² | 10 – 500 |
| Thickness | Depth of insulation installed | mm | 50 – 300 |
| Lambda (λ) | Thermal conductivity of make | W/mK | 0.032 – 0.044 |
Practical Examples (Real-World Use Cases)
Example 1: Residential Loft Top-Up
A homeowner has a 60m² loft and wants to add 150mm of Superglass Multi-Roll 44. The superglass make calculator determines that at 150mm, a roll covers approximately 6.84m². 60 / 6.84 = 8.77. The output would recommend 9 rolls, providing an R-value of 3.41.
Example 2: Commercial Wall Upgrade
A contractor is insulating a 120m² office partition with Superwall 32 (100mm). The superglass make calculator applies the lower lambda value (0.032), resulting in a superior R-value of 3.13, which is significantly warmer than standard loft rolls of the same thickness.
How to Use This Superglass Make Calculator
- Enter Area: Measure your room’s length and width, multiply them, and enter the total m² in the first field.
- Select Product: Choose the specific “make” of Superglass. Multi-Roll 44 is common for lofts, while Superwall is for vertical applications.
- Set Thickness: Enter the depth of the insulation. Note that modern building regs often suggest a total of 270mm-300mm for lofts.
- Input Price: Add the local merchant price to get an instant budget estimate.
- Review Results: The superglass make calculator will instantly display the pack count and R-value.
Key Factors That Affect Superglass Make Calculator Results
- Thermal Conductivity (Lambda): Lower values (like 0.032) mean the material is a better insulator, requiring less thickness for the same result.
- Compression: If you squeeze 200mm of Superglass into a 100mm space, the superglass make calculator‘s R-value results will be void as trapped air is lost.
- Joist Spacing: Standard Superglass rolls are 1200mm wide, perforated to 400mm or 600mm. Off-cuts can increase waste by 5-10%.
- Moisture Levels: Mineral wool loses efficiency if wet. Always ensure your calculation assumes a dry installation environment.
- Thermal Bridging: Timber joists conduct heat faster than glass wool. This calculator measures the material performance, not the total “U-value” of the entire structure.
- Product Availability: Different “makes” of Superglass come in varying roll lengths. Always verify the specific pack coverage on the wrapper.
Frequently Asked Questions (FAQ)
Superglass is a glass mineral wool, whereas Rockwool is stone wool. Superglass is generally lighter and more cost-effective for loft applications, and using a superglass make calculator helps compare their thermal outputs effectively.
For a new loft, a total R-value of around 6.1 (approx 270mm of Multi-Roll 44) is often targeted to meet modern U-value requirements of 0.16 W/m²K.
Yes, though the superglass make calculator focuses on thermal R-value, choosing the “Multi-Acoustic” make will help you order the correct quantity for soundproofing projects.
Usually, Superglass is sold as single rolls or twin-packs. This calculator assumes “units” or “packs” as defined by your local supplier’s coverage rate.
Yes, thicker rolls contain more raw glass fiber and typically cost more per m², but they save labor costs compared to laying multiple thin layers.
No, you should use downlight covers. The superglass make calculator area input should subtract the space taken by large fixtures for accuracy.
When installed correctly and kept dry, the mineral wool calculated here will last the lifetime of the building (40+ years).
Use the slope length (hypotenuse) instead of the floor width to get the correct area for the superglass make calculator.
Related Tools and Internal Resources
- Loft Insulation Calculator – Comprehensive tool for attic projects.
- U-Value Calculator – Calculate total element thermal transmittance.
- Insulation Thickness Guide – Learn about optimal depths for every climate.
- Energy Saving Calculator – Estimate how much money you save with Superglass.
- Mineral Wool vs Glass Wool – Comparison of different insulation makes.
- Acoustic Insulation Guide – Tips for using Superglass for sound dampening.