Floor Slab U Value Calculator

Calculating the inverse of that 1 r would give you a u factor in the range of 1 67 to 0 83.

Floor slab u value calculator.

U value requirement windows whole window u value 1 4 w m k. Calculation of thermal transmittances. U value requirement semi glazed doors 1 2 w m k. The u value calculator covers all the main ways of building walls flat roofs pitched roofs and floors using kingspan insulation products.

The formula for calculation of a ground floor u value is given in cibse guide a3 and is very complicated. A reasonable r value for a normal concrete slab can be estimated using an r value the thermal resistance per inch of thickness between 0 1 and 0 2 and multiplying it times the slab thickness. Sign up to jablite updates. Building width m building length m building area m2 building perimeter m.

A useful tool for designers architects and the general public to quickly calculate the u values of different elements within a building. This simple u value calculator can help you quickly check your designs or plans to see if they are likely to achieve bs en iso 6946 2017 compliance. The quick free and easy way to find out the insulation thickness and the u value you need for your building project. U value requirement opaque doors 1 0 w m k.

Follow us on social to keep in touch with our latest tweets posts and information about eps and the insulation industry. U value requirement roof 0 13 w m k. There are a few good u value calculators online that if you are short on time are worth. If the insulation is going below the slab the damp proof membrane dpm is laid next followed by the insulation a polythene separating layer and the concrete slab.

Welcome to the jablite u value calculator for floors walls and inverted roofs. Depending on the use of the building the slab can then be finished ready for use or receive a screed suitable for a floor finish. Recent changes to the building regulations have reduced the stipulated u value for floors from 0 45 to 0 25 w m k. A reasonable r value for a normal concrete slab can be estimated using an r value the thermal resistance per inch of thickness between 0 1 and 0 2 and multiplying it times the slab thickness.

For a 6 inch slab r value would be between 0 6 and 1 2. U value calculator version 3 70.