Concrete Floor Insulation Building Regs

Solid floor insulation over slab to meet min u value required of 0 22 w m k solid ground floor to consist of 150mm consolidated well rammed hardcore.

Concrete floor insulation building regs.

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. Heat loss thermal insulation there are three general types of ground floor construction. Insulation can be added over the existing concrete slab or underneath a new one. In the average home approximately 10 of the heat loss is through the ground floor.

Floor insulation designing buildings wiki share your construction industry knowledge. A concrete floor can be termed cold i e. In this scenario a rigid foam insulation is usual and as you d want the same u value in the roof we need the same thickness of insulation 180mm. Insulation under ground floor slabs is a good way of meeting the increased requirements of parts l f of the building regulations.

Blinded with 50mm sand blinding. The installation of insulation in your floor must meet the minimum energy efficiency values set out in the approved documents. There will be a damp proof membrane under the insulation and possibly a second membrane on top depending on the type of screed. However if such an upgrade is not technically or functionally feasible the element should be upgraded to the best standard which can be achieved within a simple payback of no greater than 15 years.

In fact where this is the case upgrading your floor insulation is required in order to comply with building regulations. Therefore insulation as a means of reducing heat loss is typically installed on the ground floor. Where insulation is placed above the slab the rooms will warm up more quickly when the heating is switched on. Insulation is laid on the concrete and covered with a screed.

A typical way of constructing a solid floor would be to provide a base of hardcore with sand blinding with a layer of concrete over that. These sections deal with in one way or another the values called u values which a home should be insulated to and the energy which is saved by implementing this insulation. Our skills and knowledge base have developed as time has gone on meaning that we have always kept up to date with our equipment for carrying out installations and. 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.

If the floor is a ground floor provide resistance to. Provide 100mm st2 or gen2 ground bearing slab concrete mix to conform to bs 8500 2 over a 1200mm gauge polythene dpm dpm to be lapped in with dpc in walls. However it may also be provided in upper floors between heated and unheated areas. The building regulations require that in some circumstances the floor should contain insulation to achieve the heat loss estimates for the room and or house as a whole.

February 17th 2020 building regulations for concrete floor construction.