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Glossary of Technical Terms | TAL | Tiling Adhesives | South Africa   HOMEVisitorProfile VOC Compliant TAL Laboratory Press Construction SolutionsTouchableProtectionTouchableRepair Surface Treatments, Additives & Primers Cleaners & Sealers Underlayments & Screeds Carpet, Vinyl & Tile Adhesives Groutings & Fixings Flooring & Coatings Waterproofing Systems Tiling Solutions Adhesives Tiling Grout Primers & Additives Underlayments & Screeds Waterproofing Cleaners & Sealers Tools Cutting Shaping Fixing Finishing DIY DIY TipsWrapperSelection Guide Grout Selection Guide Grout Calculator Installation Guides General Specifications Tech Support Technical Advice Centre Glossary Guarantee FAQ General Specifications MSDS Prestigious Projects Contact Branches Contractors Where to buyCareers GLOSSARY OF TECHNICAL TERMS ADHESIVE RELATED AcceleratorsAdditives that speed up reactions in adhesives.  Additive / AdmixturePolymer based material, usually liquid, which may be incorporated in cementitious adhesives and grouts to obtain greater adhesion, improved resilience (flexibility) or some stratum of water resistance. Additives should be used strictly in vibrations with the manufacturer’s instructions, and should not be widow to an wrapper unless tried by the wrapper manufacturer.Adhesion FailureAdhesion failure occurs between surfaces such as between wrapper and substrate (AF-S) or between tile and wrapper (AF-T).AdjustabilityMaximum time interval during which the tile’s position in the wrapper layer can be adjusted without loss of adhesion strength.BackgroundVertical or horizontal surface that will be tiled onto.Bed ThicknessThe thickness of the wrapper underneath the tile once the tile has been bedded into the wrapper (Adhesive is unromantic using a notched trowel, which results in thicker ‘ribs’ of wrapper which spread out when the tiles are applied).Bedding InApplying tiles firmly onto/into the tile adhesive, ensuring good contact between the wrapper and the when of the tiles usually achieved by sliding the tile when and along with occasional small rotational (twisting) movements.Butt JointA technique in which tiles are laid directly proximal to each other, with no space (grout joint) between the tiles.  This method of tiling is NOT recommended.ButteringThe spreading of wrapper onto the when of a tile just surpassing the tile is placed.  This is usually washed-up on tiles with irregular when profiles (in conjunction with wrapper unromantic to the background), or small applications where the wrapper cannot be unromantic onto the background.CementitiousWrapper - Class CIs a mixture of cement, sand and organic additives which is mixed with water or liquid transfusion immediately surpassing use.Cohesive FailureCohesive failure occurs within layers such as within the wrapper layer (CF-A), or within the substrate (CF-S) or within the soul of the tile (CF-T).CompressionA gravity squeezing or compressing a body. Compressive StressIs the measure of the pinch gravity unromantic wideness a specific area.Compressive StrengthIs the maximum compressive stress that a soul can withstand surpassing it fails.DensityIs the weight per unit volume usually expressed in grams per cubic centimetre. Water for example has a density of 1 g/cu cm and sand has a density of well-nigh 1.6 g/cu cm. See moreover SG.DispersionWrapper - Class D  (Ready Mix)Is a mixture of liquid organic binders, additives and fillers which is ready for use.EfflorescenceCrystalline petrifaction that sometimes appears on the surface of grout joints or unglazed tiles as a whitish powder.  It is caused by a reaction of moisture with impurities in the mortar. Sometimes glut water in the grout eg from cleaning can rationalization a similar effect to efflorescence. Flash OffTime required for solvents to evaporate from an wrapper layer surpassing coverings can be unromantic onto the adhesive. The end of this period signifies the whence of unshut time for such adhesives. FriableCrumbly or powdery (friable backgrounds are usually not suitable to receive tiling).GroutProprietary material used to fill the joints between tiles without the wrapper has set.Inorganic CompoundsIn wrapper terminology these are normally inert fillers and cement.Joint SealantResilient material used to fill and seal joints, to prevent the passage of moisture and to indulge horizontal and lateral movement at the joint.LaitanceLayer of weak non-durable material that contains glue and fines from aggregates and that has been brought to the surface of over-wet touchable or mortar by an upward movement of the water through the touchable or mortar.Maturing TimeInterval between the time when a cementitious wrapper is mixed and the time it is ready for use.MortarA workable paste made up of fine aggregate, glue and water.Movement JointsGaps created between parts of a soul (such as a touchable structure, or a tile layer) which are filled with a resilient (flexible) filler (such as silicone, polyurethane or polysulphide) so that changes in size of the parts of the soul can be accommodated.Open TimeMaximum interval without using during which tiles can be embedded in the wrapper without impairing the wrapper bond.Organic CompoundsIn wrapper terminology these are normally chemical compounds designed to impart specific properties such as water retention, adhesion, flexibility etc.pHIs the stratum of venom or alkalinity measured unelevated (acidic) or whilom (alkaline) the neutral point of 7. Very low (acidic) and very upper (alkaline) are associated with corrosive action. Picture Frame EffectStaining visible on all the edges of a tile, experienced without grouting with a grout  variegated in colour to the tile. It is increasingly pronounced in highly porous (absorbent) tiles, eg natural stone tiles.Pot LifeMaximum interval during which the wrapper can be used without mixing surpassing it begins to set.PrimerSubstance that is used to stratify a surface, in order to make the surface increasingly receptive to bonding by adhesives.Reaction ResinWrapper - Class R  (Epoxy)Is a two-pack mixture of synthetic resin, mineral fillers and organic additives in which hardening occurs by chemical reaction.RenderFine glue : volume mixture that is unromantic to wall backgrounds. Moreoverknown as plaster.RetardersAre additives that slow lanugo reactions, such as the setting time of cements.RheologyIs the science of the spritz of matter. In wrapper terminology it is normally observed as the worthiness of wet wrapper to support tile on a vertical surface.ScreedA floor screed is a layer of mortar made with glue and sand which is tint in situ, usually to a specified minimum thickness, onto the structural concrete. The screed may be left as finished, or floated to produce a smooth surface on which to lay the specified flooring or finish.ShearA gravity unromantic wideness a body. Shear StressIs the measure of the shear gravity unromantic wideness a specific area.Shear StrengthIs the maximum shear stress that a soul can withstand surpassing it fails.Shelf LifeTime of storage under stated conditions during which an wrapper may be expected to maintain its working properties.SkinningThe insemination of a pliant mucosa on the surface of wet adhesive, which impedes the sheets of tiles onto the adhesive. This normally happens if the sheets of the tiles is washed-up outside the wrapper unshut time.Slip (Slump)Downward movement of a tile unromantic to the wet wrapper on a vertical or inclined surface.SlurryA fairly thin mixture of a liquid (in this instance, usually a priming agent) and an insoluble solid material (in this instance, usually ordinary Portland cement).Solids ContentThe percentage remaining without all moisture has been driven off.Specific Gravity  (SG)The weight of any substance compared with an equal volume of water, in other words how many times heavier (or lighter) than water it is. Sand would therefore have an SG of 1.6 (see DENSITY).TensionA gravity stretching or pulling a soul apart. Tensile StressIs the measure of the tension gravity unromantic wideness a specific area.Tensile StrengthIs the maximum tensile stress that a soul can withstand surpassing it fails.ToppingA layer of touchable that is poured over an existing touchable slab to modernize the slab's surface or characteristics. The topping mix is well-balanced of cement, sand and volume (admixtures may moreover be incorporated in the mix). ViscosityRefers to resistance of spritz of matter. This is often observed as the thickness of the mix when stirred.   << Go to TECH SUPPORT   partner sites - visitor profile & history - VOC compliant - terms & conditions - PAIA Categories Cleaners & Sealers (1)Decorative overlayments (12)General / News (20)Industrial Flooring (3)Primers & Additives (9)Tile Grout (16)Tiling (46)Underlayments (5)Waterproofing (5) Most Popuar Posts How to waterproof a shower By Tal | 2014-03-28 | | 12501 viewsEssential tools and materials for a professional tiling jobBy Tal | 2014-10-22 | | 10811 viewsHow to identify and prevent water forfeiture to tiled surfacesBy Tal | 2014-05-14 |