A

Ashlar

Relief detail cut into render. Rustication effect

B

BBA

British Board of Agrement

Bedding/Buttering

Setting a bead with wet render

Bellcast

A drip bead that protects lower edges of render. Can be shaped as a profile of a bell

BSI

British Standards Institution

BSI Kitemark

The Kitemark is a BSI certification mark, licensed for use on a product after independent testing has been carried out to establish conformity with the stated standard

Build Up

Various Layers of products – substrate to finish

C

CAVITY

The space between the inner and outer leaf of your wall construction

Calcareous

Containing or like calcium carbonate, chalky

CFS

Cavity Fire Seal

COSHH

Control of substances hazardous to health regulations 1994

Conduction

Heat moving from a warmer to a colder region in the same substance without mass transfer. This type of heat transfer depends on the thermal conductivity of the material (measured in W/m2

Colourtex Grained

A thin coat Silicone Resin material designed for external use, with a 3mm grain size finished in a dragged texture, offering a high level of water resistance and flexibility.

Colourtex Uniform

A thin coat Silicone Resin material designed for external use, with a 1.5mm grain size finished in a uniform texture, offering a high level of water resistance and flexibility.

Colourtex Primer

A Colour primer designed for use with Colourtex Grained or Uniform to provide a pre-coloured substrate to avoid discolouration as well as a key to help adhesion.

Comb Scratcher

Used to key Prep, Base coat or any backing render

D

Density

The mass unit of volume of material (kg/m3)

Deep Primer

Primer for existing Sand and Cement – Poor substrates

DPC

Damp proof course

DPM

Damp proof membrane

Dubbing

To bring the surface, usually hollows, out to a desired level

E

EPS

Expanded Polystyrene

Efflorescence

Salt residue migrating to the surface of a render finish , through evaporation or hydrostatic pressure

Embedded

To fix firmly in a surrounding solid mass

EWI

External Wall Insulation

Expansion Beads

Used at expansion joints

EML

Expanded Metal Lathe

F

Façade

Frontage of a building

Fibre Corner Tape

Grey self adhesive water repellant flashing tape.

FPDC

Federation of Plastering and Drywall Contractors

FR

Fire resistance

Friable

Soft, Loose or flakey render which is caused by incorrect hydration

G

Green

The application has set, but is still wet.

H

Handy Pack

An order of 5 lengths of ProBead

Homogenous

Mix elements evenly to make into a single substance.

I

INCA

Insulated Render & Cladding Association

Intumescent strip

A fire retarding strip – activates and expands at 2000c used as a fire stop

J

Jamb

A side post of a doorframe or window frame

K

Key

Prepare a surface to receive a top coat

kNA

KiloNewton is a measure of force, abbreviated kN. 1 KiloNewton = 1000 Newtons

L

Lime bloom

Residual lime leeching to the surface

Lime Cement Primer

A Primer designed to reduce suction in highly porous substrates.

M

Masonary

A substrate consisting of concrete, brick, concrete block, cast concrete, stone or any other similar material

Monocouche

French for one coat render – one coat is occasionally known as Monocouche

N

NHBC

National House Building Council

O

Oxidisation

Reaction of substance with air or water

P

Permeability

Water vapour permeability is a property of a substance which permits the passage of water vapour

Plaster/ Mortar Keys

Staggered slots or mesh to hold the render

Pick up

Point at which the product begins to set

Pro Board

Fibre glass reinforced Cementitious board with integrated poly styrene

Pro Rend Colour

Scratch Plaster / Through colour render

Pro Rend Colourtex

Either Grained 3mm or Uniform 1.5mm

Pro Rend Float

A Basecoat designed for use on most masonry substrates

Pro Rend Lite

Light weight render used within the ProWall system

Pro Mesh

Reinforcing fiberglass mesh – Alkali resistant. grade 1 - 5

Pro Rend Rapid

A fast drying alternative to ProRend Float

Pro Rend Prep

A high adheasion basecoat designed for use with difficult substrates.

Pro Wall

An external walling system designed for use on frame construction

Pull off test

Where mesh is embedded into the render and allowed to dry. It is then pulled off to test the soundness of the substrate

Q

Quoin

External corner of a building or window. A cornerstone.

R

Ratio

External corner of a building or window. A cornerstone.

Rule

External corner of a building or window. A cornerstone.

Rustification

External corner of a building or window. A cornerstone.

S

Scratch Plaster

A render that is finished with a nail float to achieve an open grain texture

S.B.R

Styrene Butadiene Resin – used as a primer

Sheathing

Board fixed to a timber frame building

Sound

Free from damage and injury

Spall

To peel away from

Stop Bead

Used at junctions of walls and ceilings

Strikotherm

A high quality external insulation system

T

TCR

Through Colour Render

Through Colour Render

External render that is pre-coloured with no need to paint

Top Coat

The final application on an external rendering system

Tyrolean Gun

Used to apply a coat of rough cast render

U

Upstand

Any vertical area on building

V

W

Wastage

Waste material from an application. Typically. 5 - 10%