What is the minimum thickness for floor insulation?

Building Regulations would require at least 70 mm of high-performance foam insulation, or 150 mm of mineral wool, (although this will vary depending on floor type, construction, shape and size).

designingbuildings.co.uk - Floor insulation - Designing Buildings Wiki

Who is World No 1 guitarist?

Top 10 Best Guitarists of All Time Rank Guitarist Top Strength 1 Guthrie Govan All-Around Technical Virtuoso 2 Pat Metheny Jazz Voicing & Picking 3...

Last updated Apr 22, 2022

Do doors have to be a certain height?

Standard Interior Door Height Code generally requires interior standard door sizes to have a certain height. It needs to be a minimum of 80 inches...

Last updated Oct 21, 2020

Promotion

Floor insulation

In the average home, approximately 10% of the heat loss is through the ground floor. Therefore, insulation as a means of reducing heat loss is typically installed on the ground floor. However, it may also be provided in upper-floors between heated and unheated areas. In comparison with wall insulation or roof insulation, savings associated with floor insulation are more modest, but under some circumstances, installation costs can be lower.

The installed performance of an insulation product is dependent on:

The performance characteristics of the insulation material.

The suitability of the insulant to its installed location.

Quality of workmanship.

Defects, gaps in insulation, thermal bridging and moisture penetration.

Commonly-used floor insulation materials include:

Legislation such as the building begulations part L has acted as a catalyst for insulation, along with advanced voluntary programmes such as the Code for Sustainable Homes and BREEAM. The building regulations require that floors achieve minimum thermal performance values (U-values – a measure of how quickly heat will travel through the floor), and this affects the amount of insulation required. For example, achieving a U-value of 0.25 W/m2K or less. would require at least 70 mm of high-performance foam insulation, or 150 mm of mineral wool, (although this will vary depending on floor type, construction, shape and size). Calculations by Kingspan have produced best starting point values that are thought to be suitable for common situations.

England – April 2014

New Build: Best starting point (fabric only) – 0.11

Existing buildings: Extension – 0.22

Existing buildings: Refurbishment – 0.25

Wales – 31st July 2014

New Build: Best starting point (fabric only) – 0.15

Existing buildings: Extension – 0.18

Existing buildings: Refurbishment – 0.25

Scotland – 1st October 2015

New Build: Best starting point (fabric only) – 0.13

Existing buildings: Refurbishment and extensions (where existing dwelling’s walls and roof U-values are worse than 0.70W/m.K in the walls and worse than 0.25 W/m.K in the ceiling) – 0.15 Existing buildings: Refurbishment and extensions (for other extensions, upgraded existing thermal elements, non-empty conservatories and conversion of unheated buildings) – 0.18

Existing buildings: Conversion of heated buildings – 0.25

England – April 2014

New Build: Best starting point (fabric only) – 0.18

Existing buildings: Extension – 0.22

Existing buildings: Refurbishment – 0.25

Wales – 31st July 2014

New Build: Best starting point (fabric only) – 0.22

Existing buildings: Extension – 0.18

Existing buildings: Refurbishment – 0.25

Scotland – 1st October 2015

New Build: Best starting point (fabric only) – 0.15

Existing buildings: Refurbishment, extensions and conversion of unheated buildings – 0.20

Can you build Barndominiums in Missouri?

There are many advantages to building a barndominium in Missouri. One of the most important advantages is the fact that they are much cheaper to...

Last updated Mar 4, 2018

What are 3 types of ramps?

The Different Types of Home and Portable Wheelchair Ramps Threshold Ramps. A threshold ramp can be composed of either metal or rubber. ... Lego-...

Last updated Mar 4, 2020

Promotion

Existing buildings: Conversion of heated buildings – 0.25

NB See PA ratio for more information.

Insulation is placed above the concrete slab, along with a separating/slip layer and then a rigid floor which is generally either screed or boarding. The damp proof membrane (DPM), which can be either above or below the slab, must be continuous with the damp proof course (DPC) in the surrounding walls. The insulation boards must be tightly butted and sealed to limit air leakage. Heating response time is improved by having the insulation above the slab, and the insulation zone can be used to run services and underfloor heating. However, when used together with timber-based flooring it may be unsuitable for use in rooms that may get wet such as kitchens or bathrooms. Insulation is placed below the concrete floor slab. There are fewer restrictions on the thickness of the insulation in comparison with above slab insulation, and there is less of an issue with point loading as the load is spread over the slab rather than the insulation. However, rooms are slower to heat by comparison with above slab insulation. The installation process follows the same method as that detailed below, although the process is easier as there is no existing flooring to remove or gain access to.

edit] Simple draught-proofing

Sealant or caulking can be used to fill the gaps between floorboards and between skirting boards and the floor. Older homes are more likely to have suspended timber floors (with no ceiling below). These can be insulated by raising the floorboards and laying mineral wool insulation supported by netting between the joists. This process is relatively easy if there is a cellar or an access hatch allowing entry to the crawlspace (void) below the floorboards. If not, the floorboards will need to be taken up. It is important to consider the propensity of timber floors for air leakage. Attention is needed when relaying old floorboards or installing new ones, to ensure that all joints between boards are adequately sealed. Newer homes are far more likely to have a ground floor made of solid concrete. The simplest method of installation is to add insulation and a new floor deck on top of the existing floor. However, raising the floor level will usually require floor coverings skirtings, radiators and electrical fittings are removed and re-fitted, as well as reducing the heights of doors.

designingbuildings.co.uk - Floor insulation - Designing Buildings Wiki