A B C D E F G H I J K L M N O P Q R S T U V W XY Z

A

Air Source Heat Pump

A unit that moves heat energy from one place to another. Air Source Heat Pumps harvest “Low grade heat” from the ambient environment and convert it into useful “high grade heat” for use in the home.

Alternative Energy

Energy produced without the burning of fossil fuels.


B

British Board of Agrement

UK’s major authority offering approval and certification services to manufacturers and installers supplying the construction industry.


C

Carbon Emissions Reduction Target (CERT)

Requires all domestic energy suppliers with a customer base in excess of 250,000 customers to make savings in the amount of CO2 emitted by householders. Suppliers meet this target by promoting the uptake of low carbon energy solutions to household energy consumers, thereby assisting them to reduce the carbon footprint of their homes.

Carbon Footprint

The total set of greenhouse gas (GHG) emissions caused by an organisation, event, product or person.

Cavity Wall

Wall constructed of two layers of masonry (commonly brick or concrete blocks) separated by a gap or “cavity”. This gap is where Cavity Wall Insulation material is installed to reduce heat lost through the walls of a property.

Cavity Insulation Guarantee Agency

The Cavity Insulation Guarantee Agency provides independent 25 year guarantees for Cavity Wall Insulation fitted by registered installers in the UK and Channel islands.


E

Eco Energy Performance Certificate

Energy Performance Certificates (EPCs) give information on how to make your home more energy efficient and reduce your energy costs.

External Wall Insulation

External Wall Insulation is a form of insulation fixed to the exterior of an existing or new dwelling. The high performance insulation slab is then rendered to give a protective and decorative coating to the existing façade.


F

Feed-in-Tariff

The Feed-in Tariffs are payments to anyone who owns a renewable electricity system, for every kilowatt hour they generate.


G

Green Deal

A Government framework enabling private firms to offer consumers energy efficiency improvements to their homes, community spaces and businesses at no upfront cost, and recoup payments through a charge in instalments on the energy bill.


H

Hard-to-Treat Property

A hard to treat property is typically one where standard cavity wall insulation is not a viable option e.g. a solid wall or a non-traditional cavity wall construction.


I

Internal Wall Insulation

A form of solid wall insulation, Internal Wall insulation is generally applied when it is not possible to alter the external aesthetics of a property.

Inverter

Converts the electricity produced from direct current (DC) by solar panel systems to alternating current (AC) (240V). AC 240v electricity is the same form of electricity as that supplied by the mains power grid.


K

Kilowatt Peak (kWp)

Kilowatt peak stands for peak power. This value specifies the output power achieved by a Solar module under full solar radiation (under set Standard Test Conditions). Solar radiation of 1,000 watts per square meter is used to define standard conditions.


L

Lambda

Unit measuring the thermal conductivity value of insulating material.


M

Microgeneration Technologies

Small scale, environmentally conscious approaches to producing energy that aspire to zero or low carbon footprints, such as ground source heat pumps, solar photovoltaic or small scale wind turbines.

Mineral Wool

Fibres made from natural or synthetic minerals and used to create the insulating material found in Mark Group’s thermal insulation products.


P

Photovoltaic

The method of generating electrical power by converting solar radiation into direct current electricity using solar panels composed of a number of solar cells.


Q

Quilt (insulating)

The lightweight material, composed from mineral wool fibres, that is used to insulate properties.


R

Renewable Energy Installation Guarantee Agency (REIGA)

The organisation offering protection to customers regarding the installation of their renewable energy equipment.

Renewable Energy Resource

A source of energy that is naturally replenished and can be harnessed to heat or power homes and businesses. Renewable energy resources include sunlight, wind and geothermal heat.


S

Solar Hot Water

System by which a buildings hot water needs are provided by solar hot water panels.

Solar Cell

Sometimes referred to as photovoltaic cells, these devices convert light energy into electricity.

Solar Panel

An assembly of photovoltaic “cells”, used to supply electricity to homes and businesses.

Solid Wall

Solid wall construction is commonly found on properties built prior to the 1920’s. These properties are unable to benefit from cavity wall insulation but solid wall insulation techniques can significantly increase their energy efficiency. Check out our solid wall products for Internal Wall Insulation and External Wall Insulation.


T

Thermal Image

An image of your home that highlights areas where heat is being lost and where it may benefit from insulation. The thermal image is NOT a photograph and cannot see through walls or windows.


U

U Value

A U Value is the measurement of the rate at which heat can flow through a material.

 

 

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